GB963990A - Improved mechanical-overload electric switch - Google Patents

Improved mechanical-overload electric switch

Info

Publication number
GB963990A
GB963990A GB32347/60A GB3234760A GB963990A GB 963990 A GB963990 A GB 963990A GB 32347/60 A GB32347/60 A GB 32347/60A GB 3234760 A GB3234760 A GB 3234760A GB 963990 A GB963990 A GB 963990A
Authority
GB
United Kingdom
Prior art keywords
plate
tabs
members
drive
shaft
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
Application number
GB32347/60A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB963990A publication Critical patent/GB963990A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/006—Switches operated by mechanical overload condition, e.g. transmitted force or torque becoming too high
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed
    • H01H35/10—Centrifugal switches

Landscapes

  • Electrophotography Configuration And Component (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Fixing For Electrophotography (AREA)
  • Transmission Devices (AREA)
  • Fuses (AREA)

Abstract

963,990. Speed-responsive switches. MINNESOTA MINING & MANUFACTURING CO. Sept. 20, 1960 [Sept. 25. 1959], No. 32347/60. Heading H2B. A switch responsive to mechanical overload and suitable for use with a thermooopying machine such as that described in Specification 829,002, comprises a drum 10 mounted on a shaft 11 and engaging a friction-drive disc 13 fastened by rivets 26 to a first deflection plate 14, members 13, 14 having openings 22 which receive bolts 16 rotationally securing a second deflection plate 15 to the drum 10 and which allow limited relative rotational movement between members 10, 13. Springs 21 force tabs 24 on the plate 15 to engage tabs 23 on the plate 14, the tabs 23 forming an obtuse angle with the direction of rotation. A cover 17 is secured to a pest 18 on the plate 15 by a screw 19 whose head forms an operating member for a microswitch 20 and, if desired, a mechanical linkage. Normally the shaft 11, which may drive the belt of the thermocopying machine, is rotated by a drive cone 25 primarily through the engagement of tabs 23, 24, the friction between the members 10, 13 providing an additional driving torque. Should the load on the shaft 11 increase unduly, rotational movement between the members 10, 13 occurs which causes the tabs 23 to slide against tabs 24 and force the plate 15 away from the plate 14 to actuate the switch 20, which may open to extinguish the lamp supplying the copying radiation. The drive cone 25 may be replaced by a belt or multiplegear drive.
GB32347/60A 1959-09-25 1960-09-20 Improved mechanical-overload electric switch Expired GB963990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US842285A US3050598A (en) 1959-09-25 1959-09-25 Overload switching device

Publications (1)

Publication Number Publication Date
GB963990A true GB963990A (en) 1964-07-15

Family

ID=25286957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32347/60A Expired GB963990A (en) 1959-09-25 1960-09-20 Improved mechanical-overload electric switch

Country Status (3)

Country Link
US (1) US3050598A (en)
DE (1) DE1159079B (en)
GB (1) GB963990A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478182A (en) * 1967-08-28 1969-11-11 Ferro Mfg Corp Rotary drive mechanism including torque responsive switch
US3740505A (en) * 1972-02-03 1973-06-19 C Brady Speed responsive switch
CH579980A5 (en) * 1974-05-28 1976-09-30 Bobst Fils Sa J
US4540331A (en) * 1983-08-18 1985-09-10 General Motors Corporation Cut out device
DE3525666C1 (en) * 1985-07-18 1986-11-27 Mannesmann AG, 4000 Düsseldorf Overload protection device
US4860864A (en) * 1987-11-16 1989-08-29 General Motors Corporation Clutch for robot or like
US4842118A (en) * 1988-02-19 1989-06-27 General Motors Corporation Clutch

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE554046C (en) * 1932-07-01 Elek Sche App M B H Ges Claw coupling
DE255556C (en) *
US1949119A (en) * 1929-10-05 1934-02-27 William J Gibbs Automatic stop for electrically driven machines
US1938720A (en) * 1930-07-28 1933-12-12 Mechanical Handling Sys Inc Overload relief for conveyer systems
US1883164A (en) * 1931-02-24 1932-10-18 Leonidas A Vassakos Coupling
US1986802A (en) * 1933-12-11 1935-01-08 Friedemann William Safety device for power driven members
US2144769A (en) * 1938-03-10 1939-01-24 Anchor Steel & Conveyor Compan Overload relief structure
US2667050A (en) * 1950-10-30 1954-01-26 Mechanical Handling Sys Inc Overload protector
US2901076A (en) * 1955-02-08 1959-08-25 Dean Peter Payne Overload protection for power drives
US2969132A (en) * 1955-12-09 1961-01-24 Harold H Stewart Torque limiting devices
US2881891A (en) * 1956-01-20 1959-04-14 American Can Co Driving clutch mechanism

Also Published As

Publication number Publication date
US3050598A (en) 1962-08-21
DE1159079B (en) 1963-12-12

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