US3648028A - Electromagnetic counter - Google Patents

Electromagnetic counter Download PDF

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Publication number
US3648028A
US3648028A US879140A US3648028DA US3648028A US 3648028 A US3648028 A US 3648028A US 879140 A US879140 A US 879140A US 3648028D A US3648028D A US 3648028DA US 3648028 A US3648028 A US 3648028A
Authority
US
United States
Prior art keywords
lever
frame member
pinions
wheels
armature
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.)
Expired - Lifetime
Application number
US879140A
Other languages
English (en)
Inventor
Kazuhiko Hara
Hirozo Imai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP8775068A external-priority patent/JPS5149187B1/ja
Priority claimed from JP9477568A external-priority patent/JPS4823707B1/ja
Priority claimed from JP11282768U external-priority patent/JPS5252233Y1/ja
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Application granted granted Critical
Publication of US3648028A publication Critical patent/US3648028A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/02—Housing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/04—Design features of general application for driving the stage of lowest order
    • G06M1/041—Design features of general application for driving the stage of lowest order for drum-type indicating means
    • G06M1/044—Design features of general application for driving the stage of lowest order for drum-type indicating means with escapements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/08—Design features of general application for actuating the drive
    • G06M1/10—Design features of general application for actuating the drive by electric or magnetic means
    • G06M1/102—Design features of general application for actuating the drive by electric or magnetic means by magnetic or electromagnetic means
    • G06M1/104—Design features of general application for actuating the drive by electric or magnetic means by magnetic or electromagnetic means electromagnets, clicks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/28—Design features of general application for zeroising or setting to a particular value
    • G06M1/30—Design features of general application for zeroising or setting to a particular value using heart-shaped or similar cams; using levers
    • G06M1/32—Actuating means, e.g. magnet, spring, weight
    • G06M1/323—Actuating means, e.g. magnet, spring, weight with drums

Definitions

  • pivoting point of the first [56] References Cited lever, respective pivoting points between the first and second UNITED STATES PATENTS levers and the second lever and rotatable pinion frame are substantially aligned on a straight line so as to make repulsmg g l h torque given to the pinions from the digit wheels to be small.
  • the present invention has been suggested to remove these defects as above. According to the present invention, problems causing these defects have been effectively solved by providing, in the electromagnetic counter wherein the digit wheels are rotated by means of attractive action of an armature or armatures attracted by excited electromagnet or electromagnets, a second lever as interposed between a first driving lever and a rotary frame for pinions and so arranging respective pivoting points between the rotary frame and the second lever and between the first and second levers and bearing point of the first lever as to be aligned substantially on a straight line so that the pinions will become hard to misengage with the digit wheels even with the repulsing force given to the pinions for position shift from the digit wheels.
  • the present invention is enabled to make the force of resetting springs for resetting a pushbutton to their original position small and, thus, automatic resetting of them by means of a resetting electromagnet is made to be easier, so that the electromagnet will be made smaller and as a whole the electromagnetic counter will be minimized in dimension.
  • anchor arm length can be made shorter so as to reduce given load to the driving electromagnet. Therefore, high-speed characteristics of the counter will be able to be much improved.
  • a resilient force required for resetting the anchor in order to rotate the digit wheels and another resilient force for resetting the pushbutton are able to be provided by a single-resetting spring.
  • a transparent plate formed integrally with a lenz portion is mounted to an outer frame member as engaged with its both end edges and, therefore, a separate lens member will not have to be mounted to the outer frame and, thus, a separate strengthening member is not required for bridging between the both end edges of the frame. For these reasons required working operation for setting any measuring mechanism inside the frame will become easier, stiffness of the frame will be sufficiently strengthened by the transparent plate, and there is no such fear that the mounting of the lenz will be loosened.
  • terminal base member will be positively fixed to the frame simply by inserting the same into cutoff portion of the frame so as to coat the frame within inside surface of a case. Therefore, assembling and diassembling operations are remarkably simplified, replacing operation ofthe terminal base member is made easier, and the terminal base members become allowable mutually exchanged.
  • FIGS. lA'and 1B are perspective views of acase or housing of the electromagnetic counter employed in the present invention.
  • FIGS. 2A and 2B are perspective views of the electromagnetic counter of the invention as assembled in the case shown in FIG. 1.
  • FIGS. 3A through 3F show a lower side plan view, a front side view, a rear side view, a right side view, upper side plan view, and a left side view of the counter with the case removed, respectively.
  • FIG. 4 is a perspective view of the counter shown in FIG. 3 as disassembled. I
  • FIG. 5 is a plan view of digit wheel unit in the counter of the present invention.
  • FIGS. 6A through 6C are left side, front side and right side views of one of the digit wheels.
  • FIGS. 7A through 7C are similar views of a pinion to FIG. 6.
  • FIGS. 8A and 8B show resetting mechanism of the digit wheels in a perspective view.
  • FIG. 9 shows an explanatory view of mounting state of terminals.
  • FIG. 10 is an explanatory view to show the operation of the counter of the invention.
  • FIGS. 11A and 11B are explanatory views to show resetting operation for the digit wheels.
  • FIG. 12A shows schematically the operation of the counter according to the present invention
  • FIG. 128 shows similarly the operation ofconventional counters.
  • 1 is a case for housing therein the electromagnetic counter assembly.
  • the case 1 is provided at is reverse side with an opening 2 and with windows 3 and 3 for locking the counter assembly to the case, as seen in FIG. 18, and at its front side with a slit 4 for allowing a resetting pushbutton to be projected out of the case and with a digit viewer window 5, as seen in FIG. 1A.
  • a pushbutton 6 for resetting a plurality of digit wheels 7 aligned inside the viewer window 5 to their zero positions will extrude at the front side of the case I.
  • terminals 8 for driving electromagnet, terminals 9 for resetting electromagnet, and rear sidewall of a frame 10 including fixing screws 11 are exposed from the case, and projections 12 and 12' for locking the frame 10 to the case 1 are engaged in the respective windows 3 and 3', as shown in FIG. 2B.
  • 13 is a driving electromagnet and 14 rotatably a resetting electromagnet, both of which are fixed to the rear sidewall of the frame 10 by means of the fixing screws ll.
  • 15 and 16 are a T-shaped plate spring, respectively, which are fixed at their vertical ends to the body of the electromagnets l4 and 15, respectively.
  • Each of the other free end lateral arms of the springs 15 and I6 is engaged with an end of respective driving armature l7 and resetting armature 18.
  • the armature I7 is to be driven by magnetic attraction of the driving electromagnet I3 with the engaged end with the T-shape spring 15 as a fulcrum.
  • the other free end of the armature l7 enters in a recess 38 (see FIG. 4) of an anchor member 19 which is rotatablly supported by an axis 37 (see FIG. 4) penetrating through the frame 10.
  • Ratchet nails 20 and 20' are provided on the anchor 19 are brought into an engagement with a gearwheel 21.
  • the armature I7 is driven, the ratchet nails 20 and 20 of the anchor 19 will be caused to effect a rocking movement by the armature 17 through the recess 38, with which movement the gearwheel 21 is made to be rotated.
  • This rotation will be transmitted through a pinion gear unit 22 to the digit wheels 7.
  • Each of the digit wheels 7 and the pinion gears 22 are arranged in such manner that a rotation of one of the wheels 7 will be transmitted to an adjacent one of them subsequently through each adjacent one of the pinion gears 22.
  • 23 is a rotary frame for supporting the pinion gears 22 with a shaft 102 (see FIG. The frame 23 is in turn supported on the frame rotatably around a shaft 105 (see FIG. 4).
  • 24 is a first lever rotatably mounted on a shaft 94 supported on the frame 10, for driving a heart-shape cam 28 (see FIGS. 11A and 11B).
  • 26 is a resetting spring.
  • 27 is a pinion stopper member, which is adapted to prevent the rotary frame 23 from being rotated and also to correct the arrangement of the pinions 22.
  • the frame 10 is formed substantially in a U-shape and is provided, at its sidewalls 29 and 29, with the projections 12 and 12 and holes 30 of various sizes, at its open end side edges, with cutouts 31 and 31' and, at its rear sidewall, with holes 32,
  • the driving electromagnet 13 comprises a yoke 33 of an L-shape, a core 34 inserted in a coil bobbin 35, a coil 36 wound on the bobbin 35, and the driving armature 17 held against an end edge of said yoke 33 movably by means of the T-shape plate spring 15.
  • the driving electromagnet 13 thus formed will be fixed to the frame 10 by means of the fixing screw 11 as screwed into bottom end of the core 34 through one of the holes 32 in the rear sidewall of the frame 10 and a hole made in rear end wall of the yoke 33.
  • the resetting electromagnet 14 is formed and fixed to the frame 10 substantially in the same structure and manner as in the case of the above, except that the armature 18 has a different structure at its operative free end from that of the driving armature 17.
  • the anchor member 19 is mounted rotatably on the first s shaft 37 which is fixed at its both ends to each ofthe both walls 29 and 29' of the frame 10, and is provided with the recess 38 for receiving operative free end of the driving armature 17 and with the ratchet nails for providing rotary feed action to the gearwheel 21 for driving the digit wheels 7, as referred to before.
  • 26 is a resetting spring, which is wound on the fixed shaft 37 and engaged at an end with a projection 39 formed at a longitudinal end of the anchor 19 and at the other end with a projection 40 formed likely at a longitudinal end of the heart cam driving first lever 24.
  • the gearwheel 21 comprises a star wheel section 41 to be driven by the ratchet nails 20 of the anchor 19 and a driving gear section 42 as joined together.
  • the gear 21 is rotatably mounted on a second fixed shaft 43 fixed at both ends to the respective walls 29 and 29' ofthe frame 10.
  • the wheels 44 through 49 are provided on a side surface with follower gears 50 through 55, respectively, and on the other side surface with driver gears 56 through 61, respectively. Further on either ones of these follower and driver gears, the digit wheels 44 through 49 are provided with heart-shaped earns 62 through 67, respectively, which are shown in the present instance to be formed on a side surface of the follower gears 50 through 55.
  • heart-shape cam 62 is shown to be mounted on the side of the follower gear 50 for convenience, but the same may be positioned on the other side as desired.
  • the pinion gears 22 comprise in the present instance a similar subsequent arrangement of first pinion 68 through sixth pinion 73, as seen in FIG. 5.
  • FIG. 7 there are shown details of an exemplary one of the first pinion 68.
  • Each of the pinions is provided with a follower gear, labeled as 74 in FIG. 7, at a side of its disc-shape body and with a driver gear. labeled as 80, at the other side.
  • the driver gear has eight teeth of the respectively same height, while the follower gear 74 has eight teeth comprising four higher teeth and four lower teeth respectively alternately arranged.
  • the subsequent series of pinions 68 through 73 are mounted rotatably on a third shaft 102 fixed at its both ends on the rotary frame 23, and are employed to effect so-called position shift action for the digits represented by the series of digit wheels 7.
  • the pinions 68 through 73 are provided, as referred to in the above, with the follower gears 74 through 79 and the driver gears 80 through 85, respectively.
  • the digits position shift will be established with a linkage interconnection between the gearwheel 2l-pinion 68digit wheel 44-pinion 69--digit wheel 45pinion 70digit wheel 46pinion 71digit wheel 47-pinion 72-digit wheel 48 pinion 73-digit wheel 49 through the respective ones of driver and follower gears.
  • the driver gear 42 will drive its associated follower gear 74 of the first pinion 68
  • the driver gear 80 of this pinion 68 will in turn drive its associated follower gear 50 of the first digit wheel 44
  • the driver gear 56 of this wheel 44 will in turn intermittently drive its associated follower gear 75 of the second pinion 69
  • the driver gear 81 of this pinion 69 will in turn drive its associated follower gear 63 of the second digit wheel 45
  • the same driving and following actions are transmitted to adjacent pinions and digit wheels, while effecting the transmissions of one-tenth rotation of the first digit wheel to the second digit wheel, one-tenth rotation of the second digit wheel to the third digit wheel, and so on.
  • the pushbutton 6 for actuating the resetting mechanism is provided at its inside forward end with a hole 86 and at its intermediate portion with a long hole 87 for allowing the shaft 43 bearing the digit wheels 44 through 49 to pass freely therethrough.
  • the heart-cam driving first lever 24 is provided along its main body with a plurality of arms 88 (corresponding number to that of the digit wheels) formed vertically to the body and in parallel relation to each other as spaced by a regular distance. Each of the respective arms 88 is provided at its forward end with a hook portion 89 for engaging each of the heart-shape cams.
  • the lever 24 is also provided at one side ofits main body with a sidewall 90 including a pin 91 for engaging the pushbutton 6 through a later discussed second lever 98, a projection 40 for bearing an end of the resetting spring 26, and a hole 93.
  • the lever 24 is also provided with a boss 95 having a hole 96, and a fourth shaft 94 fixed at both ends to the frame 10 will be passed through these holes 93 and 96.
  • the before mentioned second lever 98 has at an end a hole 99 and at the other end a long hole 100.
  • the pin 91 at the sidewall 90 of the first lever 24 will be inserted through the hole 99 into the hole 86 of the pushbutton 6, so that the button 6 and the first and second levers 24 and 98 are connected with each other in rotatable manner.
  • a pin 101 provided at an end of the rotary frame 23 will be inserted.
  • the rotary frame 23 supports the series of pinions 22 in a rotatable manner with a third shaft 102, which is fixed at both ends to the frame 23 as inserted in its holes 104.
  • a coil spring 106 will be mounted around the fifth shaft 105 so as to be engaged at an end 107 with an edge of the rotary frame 23 and at the other end 108 with an edge of the stopper 27 coupled to the sidewalls 29 and 29 of the frame 10, thereby the rotary frame 23 will be urged in a direction shown by an arrow A in FIG. 8A, that is, in the direction in which the pinions 22 will be disengaged from the digit wheels 7.
  • 109 is a transparent viewer plate having at the center a lens section 110 extending in the longitudinal direction, at respective side edges projections 111, at one of the edges a cutout 112, and adjacent the other edge a slit 113 for exposing the pushbutton 6 out of the plate 109.
  • Said projections 111 will be engaged in the respective cutouts 31 and 31' at both ends of the frame 10, so that when the sidewalls 29 and 29 are inserted in the case 1 the lens 110 will exposed out of the case 1 through its window 5 (see FIG. 2).
  • the terminals 8 are fixedly held in a terminal base 114 made of an electrically insulative material, which having at both ends stepped edges 115 and at the center a vertical through hole 116.
  • Each of the terminals 8 will be fixed as penetrated through the base 111 at the position between the hole 116 and the respective stepped edges 115.
  • the U-shaped frame 10 there are provided a pair of cutouts 117 and 118 so as to form therebetween a projection 119, so that the latter will be inserted in the vertical through hole 116 of the base member 114 and, thus, the base 114 will be fixed to the frame 10. Inner surface of the housing case 1 will be butted against outside face of thus fixed base 114.
  • the lever 24 for driving the heart-shape cams in the series of digit wheels 7 is not engaging the heart-shape cams as being biased by the resetting spring 26 and, therefore, the series of pinions 22 are brought into an engagement with the follower and driver gears of the series of digit wheels 7, respectively.
  • the driving electromagnet 13 will be excited so as to attract the driving armature 17, thereby the anchor 19 associated with the armature 17 at the recess 38 will be rotated about the first shaft 37 as a center in the direction of an arrow D as shown in FIG. 10.
  • a pulse current may be applied to the terminals 9 for actuating the resetting electromagnet 14, or the resetting pushbutton 6 may be manually pushed in the direction of an arrow E shown in FIG. 11. Details of this resetting operation shall now be explained with reference to FIGS. 11A and 118.
  • the second lever 98 will be drawn in the direction of an arrow C, so that the pin 101 of the rotary frame 23 engaged in the hole 100 of the lever 98 will be also drawn in the same direction C. Then, together with resilient force of the spring 106 given to the frame 23 all the time, the lever 98 will rotate the frame 23 in the direction A about the fifth shaft 105 as a center, so that the series of pinions 22 will be separated from the follower and driving gears of the digit wheels 7.
  • a remarkable advantage of the above structure brought about according to the present invention resides in the fact that the pinions are not easily disengageable from the gears of digit wheels during the normal counting operation. The reason for this fact shall now be explained with reference to FIGS. 12A and 128.
  • FIG. 12A showing the counting operation of the counter according to the present invention, in which:
  • Bearing force that the pinions shaft receives from associated gears during the accumulative counting operation (which force acts as a repulsion force) shall be represented by N.
  • the structure When 0 m 0, the structure will be in such that the pinions will never disengage the associated gears at all and, therefore, the resetting spring 26 may be made extremely small.
  • the heart cam driving lever 88 is pivoted at a shaft 5 to a rotary frame 23'.
  • P shows resilient biasing force of a resetting spring 26'.
  • a rear portion is butted at it point m against an extended part of the rotary frame 23.
  • An electromagnetic counter comprising a plurality of rotatable number wheels each having a gear for driving the respective wheels and a plurality of pinions each associated with one of the number wheel gears for driving the number wheels, a resetting mechanism comprising the combination of a frame member carrying said pinions and mounted on a fixed pivot shaft for pivotal movement to move said pinions into and out of engagement with the number wheel gears, a plurality of heart-shaped cams fixed to one of said number wheels, a lever mounted on a fixed pivot shaft for pivotal movement into and out of engagement with said heart-shaped cams, a lever pivotally connected to said first lever and to said frame member, said pinions being mounted on said frame member on one side of the pivot point of said frame member and said second lever being pivotally connected to said frame member on the other side of said pivot point, said frame member, said first lever and said second lever being arranged so that l s ai d fixed pivot point of said first lever, (2) the point of pivotal connection between said first lever and said second lever, and
  • An electromagnetic counter as set forth in claim 1 which includes means for driving said number wheels comprising a rotatable armature, an electromagnetic device for advancing said armature, an anchor member mounted for pivotal movement in response to movement of said armature, said anchor member being mounted on an elongated pivot shaft, a coil spring wound around said shaft with one end of the spring engaging said anchor member and the other end of said spring engaging said first lever whereby said spring urges said anchor member toward its retracted position and the same spring urges said first lever away from said heart-shaped cams.
  • An electromagnetic counter as set forth in claim I which includes means for driving said number wheels comprising a rotatable armature, an electromagnet device for advancing said armature, an anchor member mounted for pivotal movement in response to movement of said armature, said anchor member being mounted on an elongated pivot shaft, a U- shaped frame member having its bottom portion fixed to the bottom of said electromagnet device with said anchor member, said number wheels, said first lever, and said frame member being mounted between the sidewalls of said U- shaped frame member via shafts fixed at both ends to said sidewalls, a transparent plate bridging the open ends of said sidewalls, a housing having an open end for receiving said U- shaped frame member and a closed end including viewer win dows for said number wheels when said transparent plate is butted against said closed end.
  • Ushaped frame member is provided at one edge of the bottom thereof with at least two cutouts to form a projection substantially at the center of said edge, and including a base member forming a hole for receiving said projection, said base member including terminal pieces having one end exposed outside said U-shaped frame member and the other end enclosed within said U-shaped frame member for connection to said electromagnetic device.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Mechanical Control Devices (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)
  • Telephone Set Structure (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
US879140A 1968-11-30 1969-11-24 Electromagnetic counter Expired - Lifetime US3648028A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8775068A JPS5149187B1 (de) 1968-11-30 1968-11-30
JP9477568A JPS4823707B1 (de) 1968-12-24 1968-12-24
JP11282768U JPS5252233Y1 (de) 1968-12-24 1968-12-24

Publications (1)

Publication Number Publication Date
US3648028A true US3648028A (en) 1972-03-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
US879140A Expired - Lifetime US3648028A (en) 1968-11-30 1969-11-24 Electromagnetic counter

Country Status (5)

Country Link
US (1) US3648028A (de)
CH (1) CH497751A (de)
DE (1) DE1959627C3 (de)
FR (1) FR2024645A1 (de)
GB (1) GB1291067A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845899A (en) * 1972-10-14 1974-11-05 Matsushita Electric Works Ltd Electromagnetic counter
US3916164A (en) * 1973-06-08 1975-10-28 Irion & Vosseler Electric pulse counter
US4264806A (en) * 1978-03-15 1981-04-28 Ing. Fritz Kubler Zahlerfabrik Electromechanical pulse counter
US4506373A (en) * 1982-01-30 1985-03-19 J. Hengstler K.G. Resettable mechanical counter
US4531050A (en) * 1980-10-25 1985-07-23 Tamura Electric Works, Ltd. Tape counter
US5001733A (en) * 1988-07-01 1991-03-19 Asahi Kogaku Kogyo Kabushiki Kaisha Reset mechanism for photoconductive drum
US5103468A (en) * 1989-09-16 1992-04-07 Ing. Fritz Kubler Zahlerfabrik Gmbh Electromechanical counting device with unintentional count prevention structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2820132C3 (de) * 1978-05-09 1982-03-11 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrische Anschlußeinrichtung
GB2040816B (en) * 1979-02-05 1983-01-26 Vickers Ltd Value setting mechanism particularly for franking machines

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1409547A (en) * 1918-02-13 1922-03-14 Measuregraph Co Totalizing mechanism
US2680562A (en) * 1952-09-23 1954-06-08 Bendix Aviat Corp Counter mechanism
US2980329A (en) * 1956-09-28 1961-04-18 Durant Mfg Co Counter resetting means
US3053441A (en) * 1958-07-24 1962-09-11 Veeder Root Inc Counter
US3321134A (en) * 1965-06-04 1967-05-23 Bowmar Instrument Corp Gear train resetting mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1409547A (en) * 1918-02-13 1922-03-14 Measuregraph Co Totalizing mechanism
US2680562A (en) * 1952-09-23 1954-06-08 Bendix Aviat Corp Counter mechanism
US2980329A (en) * 1956-09-28 1961-04-18 Durant Mfg Co Counter resetting means
US3053441A (en) * 1958-07-24 1962-09-11 Veeder Root Inc Counter
US3321134A (en) * 1965-06-04 1967-05-23 Bowmar Instrument Corp Gear train resetting mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845899A (en) * 1972-10-14 1974-11-05 Matsushita Electric Works Ltd Electromagnetic counter
US3916164A (en) * 1973-06-08 1975-10-28 Irion & Vosseler Electric pulse counter
US4264806A (en) * 1978-03-15 1981-04-28 Ing. Fritz Kubler Zahlerfabrik Electromechanical pulse counter
US4531050A (en) * 1980-10-25 1985-07-23 Tamura Electric Works, Ltd. Tape counter
US4506373A (en) * 1982-01-30 1985-03-19 J. Hengstler K.G. Resettable mechanical counter
US5001733A (en) * 1988-07-01 1991-03-19 Asahi Kogaku Kogyo Kabushiki Kaisha Reset mechanism for photoconductive drum
US5103468A (en) * 1989-09-16 1992-04-07 Ing. Fritz Kubler Zahlerfabrik Gmbh Electromechanical counting device with unintentional count prevention structure

Also Published As

Publication number Publication date
DE1959627C3 (de) 1974-09-12
GB1291067A (en) 1972-09-27
FR2024645A1 (de) 1970-08-28
DE1959627A1 (de) 1970-11-19
DE1959627B2 (de) 1974-02-07
CH497751A (de) 1970-10-15

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