US20100014998A1 - Diaphragm pump - Google Patents
Diaphragm pump Download PDFInfo
- Publication number
- US20100014998A1 US20100014998A1 US12/506,627 US50662709A US2010014998A1 US 20100014998 A1 US20100014998 A1 US 20100014998A1 US 50662709 A US50662709 A US 50662709A US 2010014998 A1 US2010014998 A1 US 2010014998A1
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- United States
- Prior art keywords
- drive
- gear
- diaphragm pump
- motor
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- 230000009467 reduction Effects 0.000 claims abstract description 30
- 150000001875 compounds Chemical class 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002572 peristaltic effect Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
- F04B43/026—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel each plate-like pumping flexible member working in its own pumping chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
Definitions
- Exemplary embodiments herein relate to a diaphragm pump for a hydraulic system.
- Diaphragm pumps possess many advantages and are widely used.
- the diaphragm pump defines a variable volume chamber by using a space between a pump casing and a diaphragm, which is controlled by a wobble plate.
- the wobble plate driven by a shaft, operates to lift away from and then compress against the diaphragm in a wavelike or peristaltic motion.
- An inlet and an outlet are provided through the pump casing with one-way valves for preventing backflow. These cooperate with the diaphragm to create an appropriate variable pumping chamber with a peristaltic action.
- the conventional diaphragm pumps require a relatively large motor to generate the torque needed to drive the pump. However, the use of the large motors increases the weight, size and cost of the diaphragm pumps.
- An improved diaphragm pump which employs a relatively smaller, lighter and more cost effective motor and drive assembly which can produce equivalent speed and torque as the previously used larger motors.
- a diaphragm pump comprises a housing, a motor supported by the housing, a drive assembly operably connected to the motor and a wobble plate operably connected to the drive assembly.
- the motor includes a drive shaft defining a rotational axis.
- the wobble plate orbits about the rotational axis of the drive shaft.
- the drive assembly includes a reduction gear assembly and a drive member connected to the gear assembly.
- the gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.
- a diaphragm pump comprises a housing and a generally small, lightweight motor supported by the housing.
- the motor includes a drive shaft defining a rotational axis.
- a drive assembly is operably connected to the motor.
- the drive assembly includes a reduction gear assembly including a planetary gear train having a plurality of compound gears and a ring gear.
- a wobble plate is rotatably connected to the gear assembly. The wobble plate orbits about the rotational axis of the drive shaft.
- the gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.
- a diaphragm pump comprises a housing and a permanent magnet motor supported by the housing.
- the motor includes a drive shaft defining a rotational axis.
- a drive assembly is positioned within the housing and is operably connected to the motor.
- the drive assembly includes a reduction gear assembly for reducing the speed and increasing the torque of the permanent magnet motor needed to drive the pump.
- the gear assembly includes a planetary gear train comprised of a plurality of drive gears and a stationary ring gear. Rotation of the drive shaft causes the plurality of drive gears to rotate about the ring gear.
- a drive member is rotatably connected to the reduction gear assembly.
- a wobble plate is rotatably connected to the drive member.
- FIG. 1 is a side perspective view of a diaphragm pump with a portion thereof removed according to the present disclosure.
- FIG. 2 is a side elevational view of the diaphragm pump of FIG. 1 .
- FIG. 3 is an exploded perspective view of the diaphragm pump of FIG. 1 .
- FIGS. 4-6 are enlarged perspective views of the illustrated components of the diaphragm pump of FIG. 3 .
- FIG. 7 is a partial cross-sectional view of the diaphragm pump of FIG. 1 .
- the diaphragm pump 100 comprises a housing 102 , a motor 104 supported by the housing, a drive assembly 106 operably connected to the motor and a wobble or swash plate 108 operably connected to the drive assembly.
- the housing 102 which houses the drive assembly 106 , includes a first housing part 112 , an intermediate, second housing part 114 , and a third housing part 116 .
- the first housing part 112 includes a first enclosure 120 supported on a suitable base 122 .
- the first enclosure 120 includes a generally cylindrical shaped wall 124 having an outer surface 126 and an inner surface 128 , and a back wall 130 .
- the inner surface includes a plurality of circumferentially spaced first notches 140 and second notches 142 .
- the first and second notches are generally U-shaped and extend axially on the inner surface 128 , an end of each notch being spaced from the end wall 130 .
- the second notches 142 which can be slightly larger than the first notches, serve as guides to properly align the first and second housing parts 112 and 114 .
- Located on the wall 124 are a pair of tabs 146 having openings 148 which are dimensioned to receive fasteners (not shown). A suitable fastener is shown in FIG. 7 .
- the base 122 includes a center member 160 having a front wall 162 and a rear wall 164 and opposed side walls 166 and 168 .
- the front wall is generally flush with an end 170 of the first enclosure 120 and includes openings 172 dimensioned to receive fasteners.
- the rear wall 164 is spaced from the back wall 130 .
- a top surface 174 of the center member includes an upwardly extending shelf 176 that spans from the rear wall 164 to the back wall 130 and has a top surface 178 configured to support the motor 104 .
- First and second flanges 184 and 186 extend from the respective side walls 166 and 168 . Each flange includes mounting holes 188 which allow the base 122 to be mounted to a subjacent flat surface.
- the second housing part 114 includes a second enclosure 200 having a generally cylindrical shaped wall 202 and a vertical wall 204 located within the enclosure.
- the wall 202 includes an outer surface 206 and an inner surface 208 .
- a flange 210 extends outwardly from a first end portion 212 of the wall 202 .
- the flange includes a plurality of circumferentially spaced first projections 220 and second projections 222 .
- the first and second projections 220 , 222 are generally U-shaped and are dimensioned to be received in the respective first and second notches 140 , 142 of the first housing part 112 .
- Located on the wall 202 are spaced apart first bosses 230 having openings (not shown).
- Spaced apart second bosses 236 having openings 238 are disposed on the inner surface 208 of the wall 202 . Ends 240 of the second bosses 236 project from a second end portion 242 of the wall 202 .
- the vertical wall 204 which separates the second enclosure 200 into a first portion 250 and a second portion 252 , includes an opening 260 .
- a generally circular flange 262 is secured to the wall 204 and extends into the second portion 252 .
- the flange 262 includes an outer wall 264 and an inner wall 266 .
- the inner wall defines an opening 270 having an axis which is coincident with an axis defined by the wall opening 260 .
- the opening 270 is dimensioned to receive a first bearing 272 .
- At least one support 274 is provided for the flange 262 .
- the support is connected to the wall 204 and spans between the inner surface 208 of the wall 202 and the outer surface 264 of the flange 262 . As shown, three spaced apart supports 274 are provided for the flange 262 ; although, this is not required.
- the third housing part 116 includes a third enclosure 290 having fluid inlet section (not shown) and a fluid outlet section (not shown).
- An inlet valve 292 is operably connected to the inlet section and an outlet valve 294 is operably connected to the outlet section.
- the third enclosure at least partially defines a pump chamber 296 .
- tabs 302 Located on a wall 300 of the third enclosure are tabs 302 having openings 304 which are dimensioned to receive fasteners F.
- the first and second projections 220 , 222 are aligned with the first and second notches 140 , 142 . Once properly aligned, the projections can be at least partially slidingly received in the notches. In this position, the openings of the first bosses register with the openings 148 of the tabs 142 and the openings 172 of the base 122 . Fasteners (not shown) extend through the openings 148 , 172 and threadingly engage the boss openings.
- the openings 304 of the tabs 302 are aligned with the openings 238 of the second bosses 236 . The fasteners F extend through the tab openings 304 and threadingly engage the boss openings 238 .
- the motor 104 which can be a relatively small, lightweight permanent magnet motor, includes a motor housing 320 , a power switch or connection to the power source 322 located on the housing and an output or drive shaft 324 .
- the power source can be alternating current or direct current batteries or a cable attached to a dc power source, like a motor vehicle battery.
- the at least one battery can have, for a non-limiting example, a voltage in the range of about 6 to around 42 volts.
- the watt rating for the motor can be for a non-limiting example in the range of 1 to 500.
- the output shaft of the motor defines a longitudinal axis. As indicated above, the motor 104 can be supported on the shelf 176 of the base 122 .
- the drive assembly 106 can comprise a reduction gear assembly 340 and a drive member 342 operably coupled to the reduction gear assembly.
- the reduction gear assembly is a planetary gear train including a spur gear 350 , a plurality of compound gears 352 and a ring gear 354 .
- the spur gear is mounted to an end portion 358 of the motor output shaft 324 which projects through the opening of the wall 130 .
- Each compound gear 352 includes a first gear 360 and a smaller second gear 362 .
- An axis of rotation of the first gear is coincident with an axis of rotation of the second gear.
- the second gear 362 is at least partially surrounded by the first gear 360 ; although, this is not required.
- a portion of the second gear 362 extends outwardly from the first gear 360 to engage the ring gear 354 .
- the ring gear 354 includes a wall 370 having an outer surface 372 and an inner surface 374 .
- the inner surface defines an opening 376 .
- the inner surface includes a plurality of circumferentially spaced teeth 378 configured to simultaneously engage the second gears 362 .
- This configuration provides for a compact gear assembly.
- the outer surface includes a plurality of circumferentially spaced first projections 380 and second, larger projections 382 .
- the first and second projections 380 , 382 engage the first and second projection 220 , 222 .
- the first and second projections 380 , 382 are dimensioned to be received in respective recesses (not visible) formed by the generally U-shaped first and second projections 220 , 222 of the second housing part 114 .
- the drive member 342 comprises a base 390 and a shaft 392 extending outwardly from a central raised portion 394 of the base.
- the base is generally triangular in shape; although, it should be appreciated that alternative shapes for the base are contemplated. To some extent, the shape of the base 390 would be dependent on the number of compound gears 352 in the gear assembly 340 .
- the base is dimensioned to be rotatably positioned within the opening 376 of the ring gear and includes posts 396 which extend from corner sections 398 of the base. Each post 396 extends through an opening 400 of each compound gear 352 to non-rotatably secure the compound gear 352 to the drive member 342 .
- the compound gears are spaced from each other so that the spur gear 350 can simultaneously engage the first gears 360 .
- the raised portion 394 is received in the opening 260 of the wall 204 .
- the shaft 392 defines a longitudinal axis which is coincident with the rotational axis of the drive shaft 324 .
- the shaft 392 extends through an opening 406 of the first bearing 272 (see FIG. 5 ) and includes a keyed section 410 .
- a coupling 420 is secured to the shaft keyed section.
- the coupling can be generally mushroom shaped and includes a head 422 , a post 424 projecting from the head, and an opening 426 for receiving the shaft 392 .
- the post 424 is sized to be frictionally received within the bearing opening 406 . Once positioned with the opening, the head 422 engages a surface of the bearing.
- the wobble plate 108 housed within the third housing part 116 is the wobble plate 108 .
- the wobble plate is rotated by the shaft 392 of the drive member 342 , which is, in turn, rotated by the drive shaft 324 of the motor 104 .
- a plurality of pistons (only one piston 440 is shown) are reciprocated by the wobble plate 108 .
- the piston 440 is attached to a diaphragm 442 which provides an internal seal for the pump.
- the piston reciprocates within the pump chamber 296 that is at least partially defined by a manifold plate 450 .
- the manifold plate includes the one-way inlet valve 292 that allows water to flow into the pump chamber and the one-way outlet valve 294 that allows water to flow out of the pump chamber.
- the wobble plate 108 is coupled to a rocker arm 460 by a second bearing 462 .
- the wobble plate provides an inclined and radially offset mounting for the second bearing.
- the second bearing defines the normal central axis of the wobble plate. This normal central axis of the wobble plate 108 is angularly displaced about 3° to 6° from the rotational axis of the shaft 392 .
- the wobble plate has a surface 466 which cooperates with the first bearing 272 to move the rocker arm in a reciprocating motion in response to a rotation of the shaft 392 .
- the pistons are attached to the rocker arm 460 by a plurality of screws 470 .
- the pistons are located symmetrically about the drive shaft and swing about a radial arc relative to the drive shaft centerline. The swinging motion of the pistons cause the outer portion of the diaphragm 442 to move a greater distance than the inner portion of the diaphragm.
- rotation of the motor drive shaft 324 causes the spur gear 350 secured thereto to simultaneously engage the first gears 360 of the compound gears 352 .
- Rotation of the first gears rotates the second gears 362 within the ring gear 354 .
- the gear assembly provides a predetermined gear reduction (for example, a 13.8:1 gear reduction) to reduce the speed of the drive shaft 324 thereby allowing the smaller, lighter and more cost effective motor 104 to generate the increased torque needed to drive the diaphragm pump 100 .
- the shaft 392 of the drive member 342 rotates about the axis of the drive shaft 324 .
- the drive shaft engages the wobble plate 108 which reciprocates the pistons 440 .
- the volume of the pump chamber 296 increases and draws in water through the inlet section and inlet valve 292 .
- the piston pushes the water out of the pump chamber and through the outlet valve 294 and outlet section. The cycle is repeated as the output shaft 392 rotates the wobble plate 108 .
- the housing 102 , drive member 342 and coupling 420 can be made of a suitable metal or polymeric material.
- the diaphragm can be made of a suitable flexible, resilient material, which can be a polymeric material or an elastomer.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
A diaphragm pump comprises a housing, a motor supported by the housing, a drive assembly operably connected to the motor and a wobble plate operably connected to the drive assembly. The motor includes a drive shaft defining a rotational axis. The wobble plate orbits about the rotational axis of the drive shaft. The drive assembly includes a reduction gear assembly and a drive member connected to the gear assembly. The gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.
Description
- The present application claims priority from U.S. Provisional Patent Application Ser. No. 611082,370 filed Jul. 21, 2008; which provisional patent application is expressly incorporated herein by reference, in its entirety.
- Exemplary embodiments herein relate to a diaphragm pump for a hydraulic system. Diaphragm pumps possess many advantages and are widely used. Generally, the diaphragm pump defines a variable volume chamber by using a space between a pump casing and a diaphragm, which is controlled by a wobble plate. Typically, the wobble plate, driven by a shaft, operates to lift away from and then compress against the diaphragm in a wavelike or peristaltic motion. An inlet and an outlet are provided through the pump casing with one-way valves for preventing backflow. These cooperate with the diaphragm to create an appropriate variable pumping chamber with a peristaltic action. The conventional diaphragm pumps require a relatively large motor to generate the torque needed to drive the pump. However, the use of the large motors increases the weight, size and cost of the diaphragm pumps.
- An improved diaphragm pump is provided which employs a relatively smaller, lighter and more cost effective motor and drive assembly which can produce equivalent speed and torque as the previously used larger motors.
- According to one aspect, a diaphragm pump comprises a housing, a motor supported by the housing, a drive assembly operably connected to the motor and a wobble plate operably connected to the drive assembly. The motor includes a drive shaft defining a rotational axis. The wobble plate orbits about the rotational axis of the drive shaft. The drive assembly includes a reduction gear assembly and a drive member connected to the gear assembly. The gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.
- According to another aspect, a diaphragm pump comprises a housing and a generally small, lightweight motor supported by the housing. The motor includes a drive shaft defining a rotational axis. A drive assembly is operably connected to the motor. The drive assembly includes a reduction gear assembly including a planetary gear train having a plurality of compound gears and a ring gear. A wobble plate is rotatably connected to the gear assembly. The wobble plate orbits about the rotational axis of the drive shaft. The gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.
- According to yet another aspect, a diaphragm pump comprises a housing and a permanent magnet motor supported by the housing. The motor includes a drive shaft defining a rotational axis. A drive assembly is positioned within the housing and is operably connected to the motor. The drive assembly includes a reduction gear assembly for reducing the speed and increasing the torque of the permanent magnet motor needed to drive the pump. The gear assembly includes a planetary gear train comprised of a plurality of drive gears and a stationary ring gear. Rotation of the drive shaft causes the plurality of drive gears to rotate about the ring gear. A drive member is rotatably connected to the reduction gear assembly. A wobble plate is rotatably connected to the drive member.
-
FIG. 1 is a side perspective view of a diaphragm pump with a portion thereof removed according to the present disclosure. -
FIG. 2 is a side elevational view of the diaphragm pump ofFIG. 1 . -
FIG. 3 is an exploded perspective view of the diaphragm pump ofFIG. 1 . -
FIGS. 4-6 are enlarged perspective views of the illustrated components of the diaphragm pump ofFIG. 3 . -
FIG. 7 is a partial cross-sectional view of the diaphragm pump ofFIG. 1 . - It should, of course, be understood that the description and drawings herein are merely illustrative and that various modifications and changes can be made in the structures disclosed without departing from the present disclosure. It will also be appreciated that the various identified components of the diaphragm pump disclosed herein are merely terms of art that may vary from one manufacturer to another and should not be deemed to limit the present disclosure. All references to direction and position, unless otherwise indicated, refer to the orientation of the diaphragm pump illustrated in the drawings and should not be construed as limiting the claims appended hereto.
- Referring now to drawings, wherein like numerals refer to like parts throughout the several views, a
diaphragm pump 100 according to the present disclosure is illustrated. With reference toFIGS. 1-3 and 7, thediaphragm pump 100 comprises ahousing 102, amotor 104 supported by the housing, adrive assembly 106 operably connected to the motor and a wobble orswash plate 108 operably connected to the drive assembly. Thehousing 102, which houses thedrive assembly 106, includes afirst housing part 112, an intermediate,second housing part 114, and athird housing part 116. - As shown in
FIGS. 3 and 4 , thefirst housing part 112 includes afirst enclosure 120 supported on asuitable base 122. Thefirst enclosure 120 includes a generally cylindricalshaped wall 124 having anouter surface 126 and aninner surface 128, and aback wall 130. The inner surface includes a plurality of circumferentially spacedfirst notches 140 andsecond notches 142. The first and second notches are generally U-shaped and extend axially on theinner surface 128, an end of each notch being spaced from theend wall 130. As will be discussed in greater detail below, thesecond notches 142, which can be slightly larger than the first notches, serve as guides to properly align the first andsecond housing parts wall 124 are a pair of tabs 146 havingopenings 148 which are dimensioned to receive fasteners (not shown). A suitable fastener is shown inFIG. 7 . - With continued reference to
FIG. 4 , thebase 122 includes acenter member 160 having afront wall 162 and arear wall 164 and opposedside walls end 170 of thefirst enclosure 120 and includesopenings 172 dimensioned to receive fasteners. Therear wall 164 is spaced from theback wall 130. Atop surface 174 of the center member includes an upwardly extendingshelf 176 that spans from therear wall 164 to theback wall 130 and has atop surface 178 configured to support themotor 104. First andsecond flanges respective side walls mounting holes 188 which allow thebase 122 to be mounted to a subjacent flat surface. - With reference now to
FIG. 5 , thesecond housing part 114 includes asecond enclosure 200 having a generally cylindricalshaped wall 202 and avertical wall 204 located within the enclosure. Thewall 202 includes anouter surface 206 and aninner surface 208. A flange 210 extends outwardly from afirst end portion 212 of thewall 202. The flange includes a plurality of circumferentially spaced first projections 220 andsecond projections 222. The first andsecond projections 220, 222 are generally U-shaped and are dimensioned to be received in the respective first andsecond notches first housing part 112. Located on thewall 202 are spaced apartfirst bosses 230 having openings (not shown). Spaced apartsecond bosses 236 havingopenings 238 are disposed on theinner surface 208 of thewall 202. Ends 240 of thesecond bosses 236 project from a second end portion 242 of thewall 202. - The
vertical wall 204, which separates thesecond enclosure 200 into a first portion 250 and asecond portion 252, includes anopening 260. A generallycircular flange 262 is secured to thewall 204 and extends into thesecond portion 252. Theflange 262 includes anouter wall 264 and aninner wall 266. The inner wall defines anopening 270 having an axis which is coincident with an axis defined by thewall opening 260. Theopening 270 is dimensioned to receive afirst bearing 272. At least one support 274 is provided for theflange 262. The support is connected to thewall 204 and spans between theinner surface 208 of thewall 202 and theouter surface 264 of theflange 262. As shown, three spaced apart supports 274 are provided for theflange 262; although, this is not required. - With reference to
FIG. 7 , thethird housing part 116 includes athird enclosure 290 having fluid inlet section (not shown) and a fluid outlet section (not shown). An inlet valve 292 is operably connected to the inlet section and anoutlet valve 294 is operably connected to the outlet section. The third enclosure at least partially defines apump chamber 296. Located on awall 300 of the third enclosure aretabs 302 havingopenings 304 which are dimensioned to receive fasteners F. - To secure the
second housing part 114 to thefirst housing part 112, the first andsecond projections 220, 222 are aligned with the first andsecond notches openings 148 of thetabs 142 and theopenings 172 of thebase 122. Fasteners (not shown) extend through theopenings third housing part 116 to thesecond housing part 114, theopenings 304 of thetabs 302 are aligned with theopenings 238 of thesecond bosses 236. The fasteners F extend through thetab openings 304 and threadingly engage theboss openings 238. - With reference again to
FIGS. 3 and 4 , themotor 104, which can be a relatively small, lightweight permanent magnet motor, includes amotor housing 320, a power switch or connection to thepower source 322 located on the housing and an output or driveshaft 324. The power source can be alternating current or direct current batteries or a cable attached to a dc power source, like a motor vehicle battery. The at least one battery can have, for a non-limiting example, a voltage in the range of about 6 to around 42 volts. The watt rating for the motor can be for a non-limiting example in the range of 1 to 500. The output shaft of the motor defines a longitudinal axis. As indicated above, themotor 104 can be supported on theshelf 176 of thebase 122. The output shaft extends through an opening (not visible) located on thewall 130 of the first housing part 112 (seeFIG. 2 ). With additional reference toFIG. 6 , thedrive assembly 106 can comprise areduction gear assembly 340 and adrive member 342 operably coupled to the reduction gear assembly. In the depicted embodiment, the reduction gear assembly is a planetary gear train including aspur gear 350, a plurality of compound gears 352 and aring gear 354. The spur gear is mounted to anend portion 358 of themotor output shaft 324 which projects through the opening of thewall 130. Eachcompound gear 352 includes afirst gear 360 and a smallersecond gear 362. An axis of rotation of the first gear is coincident with an axis of rotation of the second gear. Thesecond gear 362 is at least partially surrounded by thefirst gear 360; although, this is not required. For eachcompound gear 352, a portion of thesecond gear 362 extends outwardly from thefirst gear 360 to engage thering gear 354. - The
ring gear 354 includes awall 370 having anouter surface 372 and an inner surface 374. The inner surface defines anopening 376. The inner surface includes a plurality of circumferentially spacedteeth 378 configured to simultaneously engage thesecond gears 362. This configuration provides for a compact gear assembly. The outer surface includes a plurality of circumferentially spacedfirst projections 380 and second,larger projections 382. The first andsecond projections second projection 220, 222. Particularly, the first andsecond projections second projections 220, 222 of thesecond housing part 114. Once positioned within the recesses, thering gear 354 is non-rotatably secured to thesecond housing part 114. - The
drive member 342 comprises abase 390 and ashaft 392 extending outwardly from a central raisedportion 394 of the base. The base is generally triangular in shape; although, it should be appreciated that alternative shapes for the base are contemplated. To some extent, the shape of the base 390 would be dependent on the number of compound gears 352 in thegear assembly 340. The base is dimensioned to be rotatably positioned within theopening 376 of the ring gear and includesposts 396 which extend fromcorner sections 398 of the base. Eachpost 396 extends through anopening 400 of eachcompound gear 352 to non-rotatably secure thecompound gear 352 to thedrive member 342. In the assembled condition, the compound gears are spaced from each other so that thespur gear 350 can simultaneously engage thefirst gears 360. The raisedportion 394 is received in theopening 260 of thewall 204. Theshaft 392 defines a longitudinal axis which is coincident with the rotational axis of thedrive shaft 324. Theshaft 392 extends through anopening 406 of the first bearing 272 (seeFIG. 5 ) and includes akeyed section 410. As shown inFIG. 5 , acoupling 420 is secured to the shaft keyed section. The coupling can be generally mushroom shaped and includes a head 422, apost 424 projecting from the head, and anopening 426 for receiving theshaft 392. Thepost 424 is sized to be frictionally received within thebearing opening 406. Once positioned with the opening, the head 422 engages a surface of the bearing. - With reference to
FIG. 7 , housed within thethird housing part 116 is thewobble plate 108. The wobble plate is rotated by theshaft 392 of thedrive member 342, which is, in turn, rotated by thedrive shaft 324 of themotor 104. A plurality of pistons (only onepiston 440 is shown) are reciprocated by thewobble plate 108. Thepiston 440 is attached to adiaphragm 442 which provides an internal seal for the pump. The piston reciprocates within thepump chamber 296 that is at least partially defined by amanifold plate 450. The manifold plate includes the one-way inlet valve 292 that allows water to flow into the pump chamber and the one-way outlet valve 294 that allows water to flow out of the pump chamber. - The
wobble plate 108 is coupled to a rocker arm 460 by asecond bearing 462. The wobble plate provides an inclined and radially offset mounting for the second bearing. The second bearing defines the normal central axis of the wobble plate. This normal central axis of thewobble plate 108 is angularly displaced about 3° to 6° from the rotational axis of theshaft 392. The wobble plate has asurface 466 which cooperates with thefirst bearing 272 to move the rocker arm in a reciprocating motion in response to a rotation of theshaft 392. The pistons are attached to the rocker arm 460 by a plurality ofscrews 470. The pistons are located symmetrically about the drive shaft and swing about a radial arc relative to the drive shaft centerline. The swinging motion of the pistons cause the outer portion of thediaphragm 442 to move a greater distance than the inner portion of the diaphragm. - In use, rotation of the
motor drive shaft 324 causes thespur gear 350 secured thereto to simultaneously engage thefirst gears 360 of the compound gears 352. Rotation of the first gears rotates thesecond gears 362 within thering gear 354. The gear assembly provides a predetermined gear reduction (for example, a 13.8:1 gear reduction) to reduce the speed of thedrive shaft 324 thereby allowing the smaller, lighter and more costeffective motor 104 to generate the increased torque needed to drive thediaphragm pump 100. As the compound gears 352 rotate, theshaft 392 of thedrive member 342 rotates about the axis of thedrive shaft 324. The drive shaft, in turn, engages thewobble plate 108 which reciprocates thepistons 440. During an intake stroke, the volume of thepump chamber 296 increases and draws in water through the inlet section and inlet valve 292. During the power stroke, the piston pushes the water out of the pump chamber and through theoutlet valve 294 and outlet section. The cycle is repeated as theoutput shaft 392 rotates thewobble plate 108. - The
housing 102,drive member 342 andcoupling 420 can be made of a suitable metal or polymeric material. The diaphragm can be made of a suitable flexible, resilient material, which can be a polymeric material or an elastomer. - It will be appreciated that various of the above-disclosed and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications. Also various presently unforeseen or unanticipated alternatives, modifications, variations or improvements therein may be subsequently made by those skilled in the art. It is intended that all of these, or equivalents thereof are encompassed by the following claims.
Claims (20)
1. A diaphragm pump comprising:
a housing;
a motor supported by the housing, the motor including a drive shaft defining a rotational axis;
a drive assembly operably connected to the motor, the drive assembly including a reduction gear assembly and a wobble plate rotatably connected to the gear assembly, the wobble plate orbiting about the rotational axis of the drive shaft; and
wherein the gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.
2. The diaphragm pump of claim 1 , wherein the reduction gear assembly comprises a planetary gear train.
3. The diaphragm pump of claim 2 , wherein the planetary gear train includes a plurality of compound gears and a ring gear, the ring gear at least partially surrounding the plurality of compound gears providing for a compact reduction gear assembly.
4. The diaphragm pump of claim 3 , wherein the reduction gear assembly further comprises a spur gear coupled to the drive shaft of the motor, each compound gear including a first gear and a second smaller diameter gear, the spur gear simultaneously engaging the first gears of the plurality of compound gears.
5. The diaphragm pump of claim 4 , wherein the ring gear includes a wall having an outer surface and an inner surface, the inner surface including a plurality of circumferentially spaced teeth configured to simultaneously engage the second gears of the plurality of compound gears.
6. The diaphragm pump of claim 3 , wherein the ring gear is non-rotatably secured to the housing.
7. The diaphragm pump of claim 3 , wherein the drive assembly further includes a separate drive member rotatably coupled to the housing and located between the reduction gear assembly and wobble plate.
8. The diaphragm pump of claim 7 , wherein the drive member is at least partially positioned within the ring gear.
9. The diaphragm pump of claim 7 , wherein the drive member includes a base, a first outwardly extending shaft for engaging the wobble plate and a plurality of second outwardly extending shafts, each compound gears being non-rotatably secured to one of the second shafts.
10. The diaphragm pump of claim 9 , wherein the first shaft of the drive member defines a longitudinal axis which is coincident with the rotational axis of the drive shaft and each second shaft of the drive member defines a longitudinal axis offset from and parallel to the rotational axis of the drive shaft.
11. The diaphragm pump of claim 9 , wherein the second shafts extend in a direction opposite to the direction that the first shaft extends.
12. The diaphragm pump of claim 1 , wherein the reduction gear assembly provides about a 14:1 gear reduction to reduce the speed of the drive shaft thereby allowing the motor to generate increased torque needed to drive the diaphragm pump.
13. A diaphragm pump comprising:
a housing;
a generally small, lightweight motor supported by the housing, the motor including a drive shaft defining a rotational axis;
a drive assembly operably connected to the motor, the drive assembly including:
a reduction gear assembly including a planetary gear train having a plurality of compound gears and a ring gear, and
a wobble plate rotatably connected to the gear assembly, the wobble plate orbiting about the rotational axis of the drive shaft; and
wherein the gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.
14. The diaphragm pump of claim 13 , wherein the housing includes a first housing part and a second housing part releasably connected to the first housing part, the first and second housing parts together defining a chamber for housing the reduction gear assembly.
15. The diaphragm pump of claim 14 , wherein the ring gear is non-rotatably secured to one of the first housing part and the second housing part, the ring gear including an inner surface configured to engage the plurality of compound gears allowing rotation of the plurality of compound gears about the inner surface of the ring gear.
16. The diaphragm pump of claim 15 , wherein the reduction gear assembly further comprises a spur gear coupled to the drive shaft of the motor for simultaneously engaging the plurality of compound gears.
17. The diaphragm pump of claim 14 , wherein the drive assembly further includes a separate drive member rotatably coupled to both the reduction gear assembly and wobble plate, the drive member being at least partially positioned within the ring gear.
18. The diaphragm pump of claim 13 , wherein the motor is a permanent magnet motor and the reduction gear assembly provides about a 14:1 gear reduction to reduce the speed of the drive shaft thereby allowing the permanent magnet motor to generate increased torque needed to drive the diaphragm pump.
19. A diaphragm pump comprising:
a housing;
a permanent magnet motor supported by the housing, the motor including a drive shaft defining a rotational axis;
a drive assembly positioned within the housing and operably connected to the motor, the drive assembly including:
a reduction gear assembly for reducing the speed and increasing the torque of the permanent magnet motor needed to drive the pump, the gear assembly including a planetary gear train comprised of a plurality of drive gears and a stationary ring gear, a rotation of the drive shaft causing the plurality of drive gears to rotate about the ring gear,
a drive member rotatably connected to the reduction gear assembly, and
a wobble plate rotatably connected to the drive member.
20. The diaphragm pump of claim 19 , wherein each drive gear includes a first gear and a second gear, the first gears being simultaneously engaged by the drive shaft, the second gears being mounted to the drive member and simultaneously engaging the ring gear.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/506,627 US20100014998A1 (en) | 2008-07-21 | 2009-07-21 | Diaphragm pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8237008P | 2008-07-21 | 2008-07-21 | |
US12/506,627 US20100014998A1 (en) | 2008-07-21 | 2009-07-21 | Diaphragm pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100014998A1 true US20100014998A1 (en) | 2010-01-21 |
Family
ID=41530451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/506,627 Abandoned US20100014998A1 (en) | 2008-07-21 | 2009-07-21 | Diaphragm pump |
Country Status (1)
Country | Link |
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US (1) | US20100014998A1 (en) |
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---|---|---|---|---|
US20130034452A1 (en) * | 2011-08-04 | 2013-02-07 | Kazuki Itahara | Diaphragm pump |
US20140044563A1 (en) * | 2012-08-10 | 2014-02-13 | Munster Simms Engineering Limited | Diaphragm pumps |
CN106468282A (en) * | 2015-08-21 | 2017-03-01 | 邓元水处理器材(太仓)有限公司 | Pumping bearing arrangement |
US20190063554A1 (en) * | 2017-08-22 | 2019-02-28 | Ecolab Usa Inc. | Eccentric gear drive with reduced backlash |
CN109441786A (en) * | 2018-12-24 | 2019-03-08 | 佛山科学技术学院 | A kind of hand-rail type water pump |
EP3708832A1 (en) * | 2019-03-12 | 2020-09-16 | Brightwell Dispensers Limited | A pump assembly with a rotational to reciprocal action transmission and a diaphragm pump |
CN114630646A (en) * | 2019-09-11 | 2022-06-14 | 席拉博迪股份有限公司 | Impact therapy device |
US11408415B2 (en) * | 2019-10-24 | 2022-08-09 | Rotary Manufacturing, LLC | Pump assemblies configured for drive and pump end interchangeability |
Citations (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1506721A (en) * | 1919-10-06 | 1924-08-26 | Allis Chalmers Mfg Co | Method of producing spray nozzles |
US2621076A (en) * | 1948-06-07 | 1952-12-09 | American Marsh Pumps Inc | Spray gun for fire apparatus and the like |
US2806740A (en) * | 1955-04-13 | 1957-09-17 | Crane Co | Spray nozzle |
US2855033A (en) * | 1955-10-03 | 1958-10-07 | Selas Corp Of America | Industrial gas burner |
US2984421A (en) * | 1958-08-11 | 1961-05-16 | Sarah A Hession | Adjustable aerosol device |
US2991723A (en) * | 1958-02-05 | 1961-07-11 | Gen Motors Corp | Wobble plate diaphragm pump |
US3321139A (en) * | 1963-11-25 | 1967-05-23 | Siderurgie Fse Inst Rech | Apparatus for treating molten metals |
US3408005A (en) * | 1966-05-09 | 1968-10-29 | Willard R. Struble | Snow making nozzle |
US4014469A (en) * | 1975-11-17 | 1977-03-29 | Kozo Sato | Nozzle of gas cutting torch |
US4090416A (en) * | 1974-09-04 | 1978-05-23 | Vickers Limited | Gear boxes |
US4153391A (en) * | 1975-05-29 | 1979-05-08 | Carr-Griff, Inc. | Triple discharge pump |
US4195970A (en) * | 1977-04-04 | 1980-04-01 | Houdaille Industries, Inc. | Piston pump with planetary gear drive |
US4507058A (en) * | 1983-12-20 | 1985-03-26 | Carr-Griff, Inc. | Wobble plate pump and drive mechanism therefor |
US4534512A (en) * | 1983-03-21 | 1985-08-13 | Melnor Industries, Inc. | Fluid dispenser |
US4610605A (en) * | 1985-06-25 | 1986-09-09 | Product Research And Development | Triple discharge pump |
US4651929A (en) * | 1980-01-26 | 1987-03-24 | Kraenzle Josef | Holding and control arrangement for spraying devices on high-pressure washing equipment |
US4798258A (en) * | 1984-04-24 | 1989-01-17 | Dana Corporation | Throttle control assembly for a vehicle speed control unit |
US4801249A (en) * | 1986-06-09 | 1989-01-31 | Ohken Seiko Co., Ltd. | Small-sized pump |
US5125809A (en) * | 1990-03-27 | 1992-06-30 | Product Research And Development | Wobble plate pump |
US5141085A (en) * | 1990-11-05 | 1992-08-25 | Harnischfeger Corporation | Hoist load brake |
US5203803A (en) * | 1991-04-03 | 1993-04-20 | Aquatec Water Systems, Inc. | Reverse osmosis water purifier booster pump system |
US5466133A (en) * | 1994-06-30 | 1995-11-14 | Tuck, Jr.; Alan D. | Peristaltic pump and diaphragm therefor |
US5476367A (en) * | 1994-07-07 | 1995-12-19 | Shurflo Pump Manufacturing Co. | Booster pump with sealing gasket including inlet and outlet check valves |
US5613834A (en) * | 1994-06-01 | 1997-03-25 | Du; Benjamin R. | Positive displacement pump including modular pump component |
US5615597A (en) * | 1995-08-07 | 1997-04-01 | Aquatec Water Systems, Inc. | Composite diaphragm for diaphragm pumps having two different shore-hardness materials |
US5626464A (en) * | 1995-05-23 | 1997-05-06 | Aquatec Water Systems, Inc. | Wobble plate pump |
US5632607A (en) * | 1995-11-01 | 1997-05-27 | Shurflo Pump Manufacturing Co. | Piston and valve arrangement for a wobble plate type pump |
US5749709A (en) * | 1996-05-15 | 1998-05-12 | Du; Benjamin R. | Positive displacement pump including modular pump component |
US5791882A (en) * | 1996-04-25 | 1998-08-11 | Shurflo Pump Manufacturing Co | High efficiency diaphragm pump |
US5800136A (en) * | 1997-02-28 | 1998-09-01 | Shurflo Pump Manufacturing Co. | Pump with bypass valve |
US6048183A (en) * | 1998-02-06 | 2000-04-11 | Shurflo Pump Manufacturing Co. | Diaphragm pump with modified valves |
US6299414B1 (en) * | 1999-11-15 | 2001-10-09 | Aquatec Water Systems, Inc. | Five chamber wobble plate pump |
US6506012B2 (en) * | 2001-05-18 | 2003-01-14 | Alan D. Tuck, Jr. | Nutating centrifugal pump |
US6623245B2 (en) * | 2001-11-26 | 2003-09-23 | Shurflo Pump Manufacturing Company, Inc. | Pump and pump control circuit apparatus and method |
US6644932B2 (en) * | 2001-11-15 | 2003-11-11 | Visteon Global Technologies, Inc. | Hybrid electric/mechanical compressor with gear reducer |
US6764287B2 (en) * | 2001-08-10 | 2004-07-20 | Mitsumi Electric Co., Ltd. | Pump provided with diaphragms |
US20040165996A1 (en) * | 2003-02-25 | 2004-08-26 | Lavorwash S.P.A. | Swash plate for axial piston pump |
US6840745B1 (en) * | 1999-07-29 | 2005-01-11 | Munster Simms Engineering Limited | Diaphragm pump including a wobble plate |
US6892624B2 (en) * | 2002-05-09 | 2005-05-17 | Aquatec Water Systems, Inc. | Enhanced wobble plated driven diaphragm pump |
US7013793B2 (en) * | 2004-03-22 | 2006-03-21 | Itt Manufacturing Enterprises | Diaphragm mounting method for a diaphragm pump |
US7040876B2 (en) * | 2001-11-06 | 2006-05-09 | Oken Seiko Co., Ltd. | Valves for a diaphragm pump |
US7083392B2 (en) * | 2001-11-26 | 2006-08-01 | Shurflo Pump Manufacturing Company, Inc. | Pump and pump control circuit apparatus and method |
US20060269425A1 (en) * | 2005-05-25 | 2006-11-30 | Hart Arthur S | Diaphragm assembly for a pump |
-
2009
- 2009-07-21 US US12/506,627 patent/US20100014998A1/en not_active Abandoned
Patent Citations (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1506721A (en) * | 1919-10-06 | 1924-08-26 | Allis Chalmers Mfg Co | Method of producing spray nozzles |
US2621076A (en) * | 1948-06-07 | 1952-12-09 | American Marsh Pumps Inc | Spray gun for fire apparatus and the like |
US2806740A (en) * | 1955-04-13 | 1957-09-17 | Crane Co | Spray nozzle |
US2855033A (en) * | 1955-10-03 | 1958-10-07 | Selas Corp Of America | Industrial gas burner |
US2991723A (en) * | 1958-02-05 | 1961-07-11 | Gen Motors Corp | Wobble plate diaphragm pump |
US2984421A (en) * | 1958-08-11 | 1961-05-16 | Sarah A Hession | Adjustable aerosol device |
US3321139A (en) * | 1963-11-25 | 1967-05-23 | Siderurgie Fse Inst Rech | Apparatus for treating molten metals |
US3408005A (en) * | 1966-05-09 | 1968-10-29 | Willard R. Struble | Snow making nozzle |
US4090416A (en) * | 1974-09-04 | 1978-05-23 | Vickers Limited | Gear boxes |
US4153391A (en) * | 1975-05-29 | 1979-05-08 | Carr-Griff, Inc. | Triple discharge pump |
US4014469A (en) * | 1975-11-17 | 1977-03-29 | Kozo Sato | Nozzle of gas cutting torch |
US4195970A (en) * | 1977-04-04 | 1980-04-01 | Houdaille Industries, Inc. | Piston pump with planetary gear drive |
US4651929A (en) * | 1980-01-26 | 1987-03-24 | Kraenzle Josef | Holding and control arrangement for spraying devices on high-pressure washing equipment |
US4534512A (en) * | 1983-03-21 | 1985-08-13 | Melnor Industries, Inc. | Fluid dispenser |
US4507058A (en) * | 1983-12-20 | 1985-03-26 | Carr-Griff, Inc. | Wobble plate pump and drive mechanism therefor |
US4798258A (en) * | 1984-04-24 | 1989-01-17 | Dana Corporation | Throttle control assembly for a vehicle speed control unit |
US4610605A (en) * | 1985-06-25 | 1986-09-09 | Product Research And Development | Triple discharge pump |
US4801249A (en) * | 1986-06-09 | 1989-01-31 | Ohken Seiko Co., Ltd. | Small-sized pump |
US5125809A (en) * | 1990-03-27 | 1992-06-30 | Product Research And Development | Wobble plate pump |
US5141085A (en) * | 1990-11-05 | 1992-08-25 | Harnischfeger Corporation | Hoist load brake |
US5203803A (en) * | 1991-04-03 | 1993-04-20 | Aquatec Water Systems, Inc. | Reverse osmosis water purifier booster pump system |
US5261792A (en) * | 1991-04-03 | 1993-11-16 | Aquatec Water Systems, Inc. | Reverse osmosis water purifier booster pump system |
US5613834A (en) * | 1994-06-01 | 1997-03-25 | Du; Benjamin R. | Positive displacement pump including modular pump component |
US5466133A (en) * | 1994-06-30 | 1995-11-14 | Tuck, Jr.; Alan D. | Peristaltic pump and diaphragm therefor |
US5529468A (en) * | 1994-06-30 | 1996-06-25 | Tuck, Jr.; Alan D. | Peristaltic pump and diaphragm therefor |
US5571000A (en) * | 1994-07-07 | 1996-11-05 | Shurflo Pump Manufacturing Co. | Booster pump with bypass valve integrally formed in gasket |
US5476367A (en) * | 1994-07-07 | 1995-12-19 | Shurflo Pump Manufacturing Co. | Booster pump with sealing gasket including inlet and outlet check valves |
US5626464A (en) * | 1995-05-23 | 1997-05-06 | Aquatec Water Systems, Inc. | Wobble plate pump |
US5615597A (en) * | 1995-08-07 | 1997-04-01 | Aquatec Water Systems, Inc. | Composite diaphragm for diaphragm pumps having two different shore-hardness materials |
US5632607A (en) * | 1995-11-01 | 1997-05-27 | Shurflo Pump Manufacturing Co. | Piston and valve arrangement for a wobble plate type pump |
US5791882A (en) * | 1996-04-25 | 1998-08-11 | Shurflo Pump Manufacturing Co | High efficiency diaphragm pump |
US5749709A (en) * | 1996-05-15 | 1998-05-12 | Du; Benjamin R. | Positive displacement pump including modular pump component |
US5800136A (en) * | 1997-02-28 | 1998-09-01 | Shurflo Pump Manufacturing Co. | Pump with bypass valve |
US6048183A (en) * | 1998-02-06 | 2000-04-11 | Shurflo Pump Manufacturing Co. | Diaphragm pump with modified valves |
US6840745B1 (en) * | 1999-07-29 | 2005-01-11 | Munster Simms Engineering Limited | Diaphragm pump including a wobble plate |
US6299414B1 (en) * | 1999-11-15 | 2001-10-09 | Aquatec Water Systems, Inc. | Five chamber wobble plate pump |
US6776575B2 (en) * | 2001-05-18 | 2004-08-17 | Alan D. Tuck, Jr. | Nutating centrifugal pump |
US6506012B2 (en) * | 2001-05-18 | 2003-01-14 | Alan D. Tuck, Jr. | Nutating centrifugal pump |
US6764287B2 (en) * | 2001-08-10 | 2004-07-20 | Mitsumi Electric Co., Ltd. | Pump provided with diaphragms |
US7040876B2 (en) * | 2001-11-06 | 2006-05-09 | Oken Seiko Co., Ltd. | Valves for a diaphragm pump |
US6644932B2 (en) * | 2001-11-15 | 2003-11-11 | Visteon Global Technologies, Inc. | Hybrid electric/mechanical compressor with gear reducer |
US6623245B2 (en) * | 2001-11-26 | 2003-09-23 | Shurflo Pump Manufacturing Company, Inc. | Pump and pump control circuit apparatus and method |
US7083392B2 (en) * | 2001-11-26 | 2006-08-01 | Shurflo Pump Manufacturing Company, Inc. | Pump and pump control circuit apparatus and method |
US6892624B2 (en) * | 2002-05-09 | 2005-05-17 | Aquatec Water Systems, Inc. | Enhanced wobble plated driven diaphragm pump |
US20040165996A1 (en) * | 2003-02-25 | 2004-08-26 | Lavorwash S.P.A. | Swash plate for axial piston pump |
US7013793B2 (en) * | 2004-03-22 | 2006-03-21 | Itt Manufacturing Enterprises | Diaphragm mounting method for a diaphragm pump |
US20060269425A1 (en) * | 2005-05-25 | 2006-11-30 | Hart Arthur S | Diaphragm assembly for a pump |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9341176B2 (en) * | 2011-08-04 | 2016-05-17 | Okenseiko Co., Ltd. | Diaphragm pump |
US20130034452A1 (en) * | 2011-08-04 | 2013-02-07 | Kazuki Itahara | Diaphragm pump |
US20140044563A1 (en) * | 2012-08-10 | 2014-02-13 | Munster Simms Engineering Limited | Diaphragm pumps |
US9719502B2 (en) * | 2012-08-10 | 2017-08-01 | Munster Simms Engineering Limited | Diaphragm pumps |
CN106468282A (en) * | 2015-08-21 | 2017-03-01 | 邓元水处理器材(太仓)有限公司 | Pumping bearing arrangement |
US10767732B2 (en) * | 2017-08-22 | 2020-09-08 | Ecolab Usa Inc. | Eccentric gear drive with reduced backlash |
US20190063554A1 (en) * | 2017-08-22 | 2019-02-28 | Ecolab Usa Inc. | Eccentric gear drive with reduced backlash |
CN109441786A (en) * | 2018-12-24 | 2019-03-08 | 佛山科学技术学院 | A kind of hand-rail type water pump |
EP3708832A1 (en) * | 2019-03-12 | 2020-09-16 | Brightwell Dispensers Limited | A pump assembly with a rotational to reciprocal action transmission and a diaphragm pump |
CN111692082A (en) * | 2019-03-12 | 2020-09-22 | 布莱特威尔分配器有限公司 | Pump assembly with rotary to reciprocating drive and diaphragm pump |
US11313363B2 (en) | 2019-03-12 | 2022-04-26 | Brightwell Dispensers Limited | Pump assembly with a rotational to reciprocal action transmission and a diaphragm pump |
CN114630646A (en) * | 2019-09-11 | 2022-06-14 | 席拉博迪股份有限公司 | Impact therapy device |
US11408415B2 (en) * | 2019-10-24 | 2022-08-09 | Rotary Manufacturing, LLC | Pump assemblies configured for drive and pump end interchangeability |
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Legal Events
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AS | Assignment |
Owner name: ROYAL APPLIANCE MFG. CO.,OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONNER, MICHAEL;REEL/FRAME:023299/0603 Effective date: 20090914 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |