US20170045045A1 - Telescopic pump - Google Patents
Telescopic pump Download PDFInfo
- Publication number
- US20170045045A1 US20170045045A1 US14/825,994 US201514825994A US2017045045A1 US 20170045045 A1 US20170045045 A1 US 20170045045A1 US 201514825994 A US201514825994 A US 201514825994A US 2017045045 A1 US2017045045 A1 US 2017045045A1
- Authority
- US
- United States
- Prior art keywords
- bellow
- telescopic pump
- pump according
- open end
- cover
- 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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Classifications
-
- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/02—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having bellows
-
- 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
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/14—Pumps characterised by muscle-power operation
Definitions
- the present invention relates to a pump and, more particularly, to a telescopic pump.
- a conventional telescopic pump includes a cylinder, a piston and a rod.
- the piston is movably inserted in the cylinder.
- the rod includes an end connected to the piston and another end connected to a handle operable to move the piston to and fro in the cylinder to suck fluid into the cylinder and expel the fluid from the cylinder.
- the efficiency of the sucking and expelling of the fluid is closely related to the extent to which the piston is in contact with the cylinder.
- the efficiency is higher as the contact is tighter.
- the piston is always provided with a sealing ring for tight contact with the cylinder.
- the present invention is therefore intended to obviate or at least alleviate the problems encountered in prior art.
- the telescopic pump includes a bellow, a cover and a rod.
- the bellow includes a first end, a second end and a compressible space in communication with exterior of the bellow via the first end.
- the cover includes a channel in communication with the first end of the bellow.
- the rod is connected to the second end of the bellow so that the rod is operable to move the bellow between an extended position and a compressed position.
- the second end of the bellow is far from the first end of the bellow to enlarge the compressible space to suck fluid into the compressible space in the extended position.
- the second end of the bellow is close to the first end of the bellow to reduce the compressible space to expel the fluid from the compressible space in the compressed position.
- FIG. 1 is an exploded view of a telescopic pump according to the first embodiment of the present invention
- FIG. 2 is a perspective view of the telescopic pump shown in FIG. 1 ;
- FIG. 3 is a cross-sectional view of the telescopic pump illustrated in FIG. 2 ;
- FIG. 4 is a cross-sectional view of the telescopic pump in another position than shown in FIG. 3 ;
- FIG. 5 is a partial and cross-sectional view of the telescopic pump according to the second embodiment of the present invention.
- FIG. 6 is a partial and cross-sectional view of the telescopic pump according to the third embodiment of the present invention.
- a telescopic pump 10 includes a bellow 20 , a cover 30 , a rod 40 , a shell 50 , a tubular element 60 , a filter 70 and a check valve unit (not numbered) in accordance with a first embodiment of the present invention.
- the bellow 20 is entirely inserted in the shell 50 .
- the rod 40 is partially inserted in the shell 50 .
- the cover 30 is connected to the shell 50 .
- the cover 30 is further connected to the tubular element 60 .
- the filter 70 is inserted in the cover 30 .
- the check valve unit is also inserted in the cover 30 .
- the shell 50 includes a front open end 52 , a rear open end 54 , a window 56 and a scale 58 .
- the shell 50 includes, near the front open end 52 , a thread (not numbered).
- the rear open end 54 is made with an internal diameter smaller than that of the front open end 52 .
- the window 56 is a slot made in the periphery of the shell 50 .
- the window 56 extends in a longitudinal direction of the shell 50 .
- the scale 58 is formed on an external side of the shell 50 .
- the scale 58 is arranged in a longitudinal direction of the shell 50 .
- the bellow 20 includes an indicator 22 , a first end 24 , a second end 26 and a compressible space 28 .
- the compressible space 28 is made in the bellow 20 and is in communication with the exterior of the bellow 20 via both of the first end 24 and the second end 26 .
- the indicator 22 is provided on an internal side of the bellow 20 , between the first end 24 and the second end 26 .
- the cover 30 includes a protrusion 31 , a transverse connecting portion 33 , an external longitudinal connecting portion 37 , an internal longitudinal connecting portion (not numbered) and a channel 32 .
- the channel 32 is a T-shaped channel including three open ends 34 , 36 and 38 .
- the open end 34 is located between the open ends 36 and 38 .
- the open end 36 is located opposite to the open end 38 .
- the protrusion 31 is a tubular portion extending around a portion of the channel 32 near the open end 36 .
- the transverse connecting portion 33 is a tubular portion extending around a portion of the channel 32 near the open end 34 .
- a thread 35 is formed on an external side of the transverse connecting portion 33 .
- the internal longitudinal connecting portion is a tubular portion extending around a portion of the channel 32 near the open end 38 .
- the external longitudinal connecting portion 37 is an annular portion extending around the internal longitudinal connecting portion.
- the internal longitudinal connecting portion of the cover 30 includes a thread (not numbered) engaged with a thread (not numbered) formed at the first end 24 of the bellow 20 to connect the cover 30 to the bellow 20 .
- the open end 38 of the channel 32 is in communication with the first end 24 of the bellow 20 as the cover 30 is connected to the bellow 20 .
- the external longitudinal connecting portion 37 of the cover 30 includes, on an internal side, a thread (not numbered) engaged with a thread (not numbered) formed on a portion of the shell 50 around the front open end 52 .
- the external longitudinal connecting portion 37 of the cover 30 is connected to the front open end 52 of the shell 50 .
- the check valve unit includes two check valves 74 .
- the first check valve 74 is inserted in a portion of the cover 30 in the vicinity of the open end 34 of the channel 32 to allow fluid to enter the telescopic pump 10 , but not vice versa.
- the second check valve 74 is inserted in a portion of the cover 30 near the open end 36 of the channel 32 to allow fluid to leave the telescopic pump 10 , but not vice versa.
- the rod 40 includes an enlarged end 42 and a reduced end 46 .
- the reduced end 46 of the rod 40 is located opposite to the enlarged end 42 .
- the enlarged end 42 is in the shape of a receptacle that includes a cavity 44 made therein.
- the wall of the cavity 44 of the enlarged end 42 is formed with a thread engaged with a thread formed on the second end 26 of the bellow 20 .
- a handle 48 is connected to the reduced end 46 .
- the handle 48 is operable to move the bellow 20 between an extended position and a compressed position via the rod 40 .
- a portion of the rod 40 that extends between the enlarged end 42 and the reduced end 46 is inserted in the rear open end 54 to allow the rod 40 to longitudinally move relative to the shell 50 .
- the tubular element 60 includes a small portion 62 and a large portion 64 .
- the small portion 62 is made with a diameter smaller than that of the large portion 64 .
- the large portion 64 includes, on an internal side, a thread 66 engaged with the thread 35 to connect the tubular element 60 to the transverse connecting portion 33 in a detachable manner.
- the small portion 62 of the tubular element 60 is located opposite to the large portion 64 .
- the small portion 62 can be inserted in and hence connected to a pipe or a container (not shown).
- the filter 70 is inserted in and located between the tubular element 60 and transverse connecting portion 33 .
- the filter 70 preferably includes an annular flange (not numbered) that extending around a dome (not numbered).
- the dome of the filter 70 is inserted in the transverse connecting portion 33 via the open end 34 .
- the annular flange of the filter 70 is sandwiched between the large portion 64 and the transverse connecting portion 33 .
- the handle 48 is operable to move the bellow 20 between an extended position and a compressed position between via the rod 40 .
- the second end 26 of the bellow 20 is far from the first end 24 of the bellow 20 to enlarge the compressible space 28 to suck fluid into the compressible space 28 via the open end 34 of the cover 30 .
- the second end 26 of the bellow 20 is close to the first end 24 of the bellow 20 to reduce the compressible space 28 to expel the fluid from the compressible space 28 via the open end 36 of the cover 30 .
- the change in the volume of the compressible space 28 causes the position of the indicator 22 in the window 56 to change. Hence, the position of the indicator 22 relative to the scale 58 is visible to help a user to determine the volume of the compressible space 28 .
- the bellow 20 is not in contact with an internal side of the shell 50 , i.e., the bellow 20 does not rub against the shell 50 so that there is not friction between the bellow 20 and the shell 50 .
- the operation of the telescopic pump 10 is hence easier than that of a conventional telescopic pump.
- the bellow 20 is made of an acid-resistant material such as Teflon and fluorinated resin to prevent erosion and exhibits a sealing property better than that of a seal.
- the channel 32 of the cover 30 does not include the open end 34 . That is, the channel 32 includes only the open end 36 and the open end 38 .
- the telescopic pump 10 does not include any check valve. Hence, the fluid can travel into and out of the channel 32 of the cover 30 via the open end 36 and the open end 38 , without affecting the sucking of the fluid into the bellow 20 in the extended position or the expelling of the fluid from the bellow 20 in the compressed position.
- the third embodiment is identical to the first embodiment except that the protrusion 31 and the cover 30 are two individual elements.
- the protrusion 31 is formed with a thread (not numbered) engaged with the thread 35 of the cover 30 so that the channel 32 still includes three open ends.
- the protrusion 31 can be made of different sizes and shapes for connection to pipes of different sizes and shapes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A telescopic pump includes a bellow, a cover and a rod. The bellow includes a first end, a second end and a compressible space in communication with exterior of the bellow via the first end. The cover includes a channel in communication with the first end of the bellow. The rod is connected to the second end of the bellow so that the rod is operable to move the bellow between an extended position and a compressed position. The second end of the bellow is far from the first end of the bellow to enlarge the compressible space to suck fluid into the compressible space in the extended position. The second end of the bellow is close to the first end of the bellow to reduce the compressible space to expel the fluid from the compressible space in the compressed position.
Description
- 1. Field of Invention
- The present invention relates to a pump and, more particularly, to a telescopic pump.
- 2. Related Prior Art
- A conventional telescopic pump includes a cylinder, a piston and a rod. The piston is movably inserted in the cylinder. The rod includes an end connected to the piston and another end connected to a handle operable to move the piston to and fro in the cylinder to suck fluid into the cylinder and expel the fluid from the cylinder.
- The efficiency of the sucking and expelling of the fluid is closely related to the extent to which the piston is in contact with the cylinder. The efficiency is higher as the contact is tighter. Hence, the piston is always provided with a sealing ring for tight contact with the cylinder.
- However, there is considerable friction between the sealing ring and the cylinder, and such friction causes resistance against the movement of the piston relative to the cylinder. Hence, the movement of the piston in the cylinder is difficult. Moreover, the piston is generally made of rubber which is vulnerable to erosion by acid. Such erosion affect the contact of the piston with the cylinder and hence the efficiency of the sucking and expelling of the fluid.
- The present invention is therefore intended to obviate or at least alleviate the problems encountered in prior art.
- It is the primary objective of the present invention to provide an efficient and reliable telescopic pump.
- To achieve the foregoing objective, the telescopic pump includes a bellow, a cover and a rod. The bellow includes a first end, a second end and a compressible space in communication with exterior of the bellow via the first end. The cover includes a channel in communication with the first end of the bellow. The rod is connected to the second end of the bellow so that the rod is operable to move the bellow between an extended position and a compressed position. The second end of the bellow is far from the first end of the bellow to enlarge the compressible space to suck fluid into the compressible space in the extended position. The second end of the bellow is close to the first end of the bellow to reduce the compressible space to expel the fluid from the compressible space in the compressed position.
- Other objectives, advantages and features of the present invention will be apparent from the following description referring to the attached drawings.
- The present invention will be described via detailed illustration of three embodiments referring to the drawings wherein:
-
FIG. 1 is an exploded view of a telescopic pump according to the first embodiment of the present invention; -
FIG. 2 is a perspective view of the telescopic pump shown inFIG. 1 ; -
FIG. 3 is a cross-sectional view of the telescopic pump illustrated inFIG. 2 ; -
FIG. 4 is a cross-sectional view of the telescopic pump in another position than shown inFIG. 3 ; -
FIG. 5 is a partial and cross-sectional view of the telescopic pump according to the second embodiment of the present invention; and -
FIG. 6 is a partial and cross-sectional view of the telescopic pump according to the third embodiment of the present invention. - Referring to
FIGS. 1 through 4 , atelescopic pump 10 includes abellow 20, acover 30, arod 40, ashell 50, atubular element 60, afilter 70 and a check valve unit (not numbered) in accordance with a first embodiment of the present invention. Thebellow 20 is entirely inserted in theshell 50. Therod 40 is partially inserted in theshell 50. Thecover 30 is connected to theshell 50. Thecover 30 is further connected to thetubular element 60. Thefilter 70 is inserted in thecover 30. The check valve unit is also inserted in thecover 30. - The
shell 50 includes a frontopen end 52, a rearopen end 54, awindow 56 and ascale 58. Theshell 50 includes, near the frontopen end 52, a thread (not numbered). The rearopen end 54 is made with an internal diameter smaller than that of the frontopen end 52. Thewindow 56 is a slot made in the periphery of theshell 50. Thewindow 56 extends in a longitudinal direction of theshell 50. Thescale 58 is formed on an external side of theshell 50. Thescale 58 is arranged in a longitudinal direction of theshell 50. - The
bellow 20 includes anindicator 22, afirst end 24, asecond end 26 and acompressible space 28. Thecompressible space 28 is made in thebellow 20 and is in communication with the exterior of thebellow 20 via both of thefirst end 24 and thesecond end 26. By printing for example, theindicator 22 is provided on an internal side of thebellow 20, between thefirst end 24 and thesecond end 26. - The
cover 30 includes aprotrusion 31, a transverse connectingportion 33, an external longitudinal connectingportion 37, an internal longitudinal connecting portion (not numbered) and achannel 32. Thechannel 32 is a T-shaped channel including threeopen ends open end 34 is located between theopen ends open end 36 is located opposite to theopen end 38. Theprotrusion 31 is a tubular portion extending around a portion of thechannel 32 near theopen end 36. The transverse connectingportion 33 is a tubular portion extending around a portion of thechannel 32 near theopen end 34. Athread 35 is formed on an external side of the transverse connectingportion 33. The internal longitudinal connecting portion is a tubular portion extending around a portion of thechannel 32 near theopen end 38. The external longitudinal connectingportion 37 is an annular portion extending around the internal longitudinal connecting portion. - The internal longitudinal connecting portion of the
cover 30 includes a thread (not numbered) engaged with a thread (not numbered) formed at thefirst end 24 of thebellow 20 to connect thecover 30 to thebellow 20. Theopen end 38 of thechannel 32 is in communication with thefirst end 24 of thebellow 20 as thecover 30 is connected to thebellow 20. - The external longitudinal connecting
portion 37 of thecover 30 includes, on an internal side, a thread (not numbered) engaged with a thread (not numbered) formed on a portion of theshell 50 around the frontopen end 52. Thus, the external longitudinal connectingportion 37 of thecover 30 is connected to the frontopen end 52 of theshell 50. - The check valve unit includes two
check valves 74. Thefirst check valve 74 is inserted in a portion of thecover 30 in the vicinity of theopen end 34 of thechannel 32 to allow fluid to enter thetelescopic pump 10, but not vice versa. Thesecond check valve 74 is inserted in a portion of thecover 30 near theopen end 36 of thechannel 32 to allow fluid to leave thetelescopic pump 10, but not vice versa. - The
rod 40 includes anenlarged end 42 and areduced end 46. Thereduced end 46 of therod 40 is located opposite to theenlarged end 42. Theenlarged end 42 is in the shape of a receptacle that includes acavity 44 made therein. The wall of thecavity 44 of theenlarged end 42 is formed with a thread engaged with a thread formed on thesecond end 26 of thebellow 20. Ahandle 48 is connected to thereduced end 46. Hence, thehandle 48 is operable to move thebellow 20 between an extended position and a compressed position via therod 40. A portion of therod 40 that extends between theenlarged end 42 and thereduced end 46 is inserted in the rearopen end 54 to allow therod 40 to longitudinally move relative to theshell 50. - The
tubular element 60 includes asmall portion 62 and alarge portion 64. Thesmall portion 62 is made with a diameter smaller than that of thelarge portion 64. Thelarge portion 64 includes, on an internal side, athread 66 engaged with thethread 35 to connect thetubular element 60 to the transverse connectingportion 33 in a detachable manner. Thesmall portion 62 of thetubular element 60 is located opposite to thelarge portion 64. Thesmall portion 62 can be inserted in and hence connected to a pipe or a container (not shown). - The
filter 70 is inserted in and located between thetubular element 60 and transverse connectingportion 33. Thefilter 70 preferably includes an annular flange (not numbered) that extending around a dome (not numbered). The dome of thefilter 70 is inserted in the transverse connectingportion 33 via theopen end 34. The annular flange of thefilter 70 is sandwiched between thelarge portion 64 and the transverse connectingportion 33. - In use, the
handle 48 is operable to move thebellow 20 between an extended position and a compressed position between via therod 40. In the extended position, thesecond end 26 of thebellow 20 is far from thefirst end 24 of thebellow 20 to enlarge thecompressible space 28 to suck fluid into thecompressible space 28 via theopen end 34 of thecover 30. - In the compressed position, the
second end 26 of thebellow 20 is close to thefirst end 24 of thebellow 20 to reduce thecompressible space 28 to expel the fluid from thecompressible space 28 via theopen end 36 of thecover 30. - The change in the volume of the
compressible space 28 causes the position of theindicator 22 in thewindow 56 to change. Hence, the position of theindicator 22 relative to thescale 58 is visible to help a user to determine the volume of thecompressible space 28. - It should be noted that the
bellow 20 is not in contact with an internal side of theshell 50, i.e., thebellow 20 does not rub against theshell 50 so that there is not friction between thebellow 20 and theshell 50. The operation of thetelescopic pump 10 is hence easier than that of a conventional telescopic pump. Moreover, thebellow 20 is made of an acid-resistant material such as Teflon and fluorinated resin to prevent erosion and exhibits a sealing property better than that of a seal. - Referring to
FIG. 5 , there is atelescopic pump 10 according to a second embodiment of the present invention. The second embodiment is identical to the first embodiment except for two features. Firstly, thechannel 32 of thecover 30 does not include theopen end 34. That is, thechannel 32 includes only theopen end 36 and theopen end 38. Secondly, thetelescopic pump 10 does not include any check valve. Hence, the fluid can travel into and out of thechannel 32 of thecover 30 via theopen end 36 and theopen end 38, without affecting the sucking of the fluid into thebellow 20 in the extended position or the expelling of the fluid from thebellow 20 in the compressed position. - Referring to
FIG. 6 , there is atelescopic pump 10 according to a third embodiment of the present invention. The third embodiment is identical to the first embodiment except that theprotrusion 31 and thecover 30 are two individual elements. Like thetubular element 60, theprotrusion 31 is formed with a thread (not numbered) engaged with thethread 35 of thecover 30 so that thechannel 32 still includes three open ends. Like thetubular element 60, theprotrusion 31 can be made of different sizes and shapes for connection to pipes of different sizes and shapes. - The present invention has been described via the detailed illustration of the embodiments. Those skilled in the art can derive variations from the embodiments without departing from the scope of the present invention. Therefore, the embodiments shall not limit the scope of the present invention defined in the claims.
Claims (17)
1. A telescopic pump comprising:
a bellow comprising a first end, a second end and a compressible space in communication with exterior of the bellow via the first end;
a cover comprising a channel in communication with the first end of the bellow; and
a rod connected to the second end of the bellow so that the rod is operable to move the bellow between an extended position and a compressed position, wherein the second end of the bellow is far from the first end of the bellow to enlarge the compressible space to suck fluid into the compressible space in the extended position, wherein the second end of the bellow is close to the first end of the bellow to reduce the compressible space to expel the fluid from the compressible space in the compressed position.
2. The telescopic pump according to claim 1 , wherein the channel of the cover comprises a first open end in communication with the first end of the bellow.
3. The telescopic pump according to claim 2 , wherein the channel of the cover comprises a second open end via which the channel is in communication with the exterior of the telescopic pump.
4. The telescopic pump according to claim 2 , wherein the channel of the cover comprises a second open end to allow fluid to travel out of the bellow and a third open end to allow the fluid to travel into the bellow.
5. The telescopic pump according to claim 4 , further comprising:
a first check valve inserted in the first open end of the channel of the cover to only allow the fluid to travel into the bellow via the first open end; and
a second check valve inserted in the second open end of the channel of the cover to only allow the fluid to travel out of the bellow via the second open end.
6. The telescopic pump according to claim 5 , wherein the cover further comprises:
a transverse connecting portion extending around a portion of the channel near the open end; and
a protrusion extending around a portion of the channel near the second open end.
7. The telescopic pump according to claim 6 , further comprising a tubular element formed with an end connected to the transverse connecting portion of the cover.
8. The telescopic pump according to claim 7 , further comprising a filter inserted in and located between the tubular element and transverse connecting portion.
9. The telescopic pump according to claim 1 , further comprising a handle connected to the rod, opposite to the bellow.
10. The telescopic pump according to claim 9 , wherein the rod comprises a first end connected to the handle and a second end connected to the second end of the bellow.
11. The telescopic pump according to claim 1 , further comprising a shell for containing the bellow.
12. The telescopic pump according to claim 11 , wherein the cover is connected to the shell.
13. The telescopic pump according to claim 12 , wherein the shell comprises a front open end connected to the cover and a rear open end for receiving the rod to guide the rod to move smoothly relative to the shell.
14. The telescopic pump according to claim 13 , wherein the cover comprises a longitudinal connecting portion connected to the front open end of the shell.
15. The telescopic pump according to claim 11 , wherein the shell comprises a window via which the bellow is visible.
16. The telescopic pump according to claim 15 , wherein the shell further comprises a scale near and along the window.
17. The telescopic pump according to claim 16 , wherein the bellow further comprises an indicator visible through the window so that the position of the indicator relative to the scale is used to determine the volume of the compressible space.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/825,994 US20170045045A1 (en) | 2015-08-13 | 2015-08-13 | Telescopic pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/825,994 US20170045045A1 (en) | 2015-08-13 | 2015-08-13 | Telescopic pump |
Publications (1)
Publication Number | Publication Date |
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US20170045045A1 true US20170045045A1 (en) | 2017-02-16 |
Family
ID=57995410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/825,994 Abandoned US20170045045A1 (en) | 2015-08-13 | 2015-08-13 | Telescopic pump |
Country Status (1)
Country | Link |
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US (1) | US20170045045A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170082095A1 (en) * | 2015-09-21 | 2017-03-23 | Ying-Chieh Liao | Pumping device |
US11060514B2 (en) * | 2018-02-19 | 2021-07-13 | Tactopack, Inc. | Collapsing beam pump |
US11464367B2 (en) | 2020-04-13 | 2022-10-11 | Tactopack, Inc. | Fluid application system with integral dispensing tube |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4947491A (en) * | 1987-06-27 | 1990-08-14 | Portasilo Limited | Pump |
US5165866A (en) * | 1990-12-07 | 1992-11-24 | Iwaki Co., Ltd. | Bellows pump |
US5713723A (en) * | 1996-05-17 | 1998-02-03 | Tuthill Corporation | Volumetric hand pump |
US20070086904A1 (en) * | 2005-10-18 | 2007-04-19 | Medtronic Minimed, Inc. | Infusion device and actuator for same |
-
2015
- 2015-08-13 US US14/825,994 patent/US20170045045A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4947491A (en) * | 1987-06-27 | 1990-08-14 | Portasilo Limited | Pump |
US5165866A (en) * | 1990-12-07 | 1992-11-24 | Iwaki Co., Ltd. | Bellows pump |
US5713723A (en) * | 1996-05-17 | 1998-02-03 | Tuthill Corporation | Volumetric hand pump |
US20070086904A1 (en) * | 2005-10-18 | 2007-04-19 | Medtronic Minimed, Inc. | Infusion device and actuator for same |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170082095A1 (en) * | 2015-09-21 | 2017-03-23 | Ying-Chieh Liao | Pumping device |
US9995292B2 (en) * | 2015-09-21 | 2018-06-12 | Ying-Chieh Liao | Pumping device |
US11060514B2 (en) * | 2018-02-19 | 2021-07-13 | Tactopack, Inc. | Collapsing beam pump |
US11464367B2 (en) | 2020-04-13 | 2022-10-11 | Tactopack, Inc. | Fluid application system with integral dispensing tube |
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