GB991927A - Improvements in or relating to press keys provided with a security unlocking device - Google Patents

Improvements in or relating to press keys provided with a security unlocking device

Info

Publication number
GB991927A
GB991927A GB3447061A GB3447061A GB991927A GB 991927 A GB991927 A GB 991927A GB 3447061 A GB3447061 A GB 3447061A GB 3447061 A GB3447061 A GB 3447061A GB 991927 A GB991927 A GB 991927A
Authority
GB
United Kingdom
Prior art keywords
push
button
housing
pushbutton
bolt
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
GB3447061A
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.)
KURR MAECKER
Original Assignee
KURR MAECKER
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 KURR MAECKER filed Critical KURR MAECKER
Publication of GB991927A publication Critical patent/GB991927A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H01H2003/0246—Resetting of bistable emergency operating part by rotating itself or an accessory

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Push-Button Switches (AREA)

Abstract

991,927. Switches held set and freed mechanically. K. MAECKER. Sept. 26, 1961 [Oct. 22, 1960], No. 34470/61. Heading H2B. A push-button switch has a safety lock built into the push-button part which is locked in its depressed " operated " or " OFF " position by spring-loaded bolts 16 entering apertures 20 in a sleeve 7 surrounding the casing 6 of the pushbutton. An unlocking key 21 is inserted into the body 22 of the safety lock and rotated to cause an unlocking ring 8 to cam bolts 16 radially outwardly, thereby allowing a spring 4 to restore the push-button to its raised " ready for operation " or " ON " position. Depression of the mushroom-shaped head 3 of the pushbutton moves a bolt 5 to operate the switch, the downward stroke of the bolt being limited by a sprung ring 14 in a broadened extension 9 of the bolt engaging a base 11 inserted in the pushbutton housing 1. The bolts 16 are arranged in an annular member 15 held in the housing 1 by a sprung ring 18. The push-button, between its head 3 and its housing 1, has a rubber boot 24 which protects the push-button from external dirt.
GB3447061A 1960-10-22 1961-09-26 Improvements in or relating to press keys provided with a security unlocking device Expired GB991927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0046927 1960-10-22

Publications (1)

Publication Number Publication Date
GB991927A true GB991927A (en) 1965-05-12

Family

ID=7305757

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3447061A Expired GB991927A (en) 1960-10-22 1961-09-26 Improvements in or relating to press keys provided with a security unlocking device

Country Status (2)

Country Link
CH (1) CH393485A (en)
GB (1) GB991927A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159465A1 (en) * 1984-01-30 1985-10-30 Deere & Company Safety device, in particular for presses
GB2318456A (en) * 1997-12-06 1998-04-22 Craig & Derricott Limited Switch
FR2967269A1 (en) * 2010-11-05 2012-05-11 Schneider Electric Ind Sas Identification device for use on e.g. emergency stop type push button, in industrial environment, has ring displaced in translation with respect to base, and sidewall connecting base to ring, and deformed during translation of ring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523688A1 (en) * 1982-03-19 1983-09-23 Telemecanique Electrique EMERGENCY STOP DEVICE
ATE35747T1 (en) * 1984-08-23 1988-07-15 Square D Starkstrom Gmbh ACTUATION ATTACHMENT FOR ELECTRICAL COMMAND AND SIGNALING DEVICES, IN PARTICULAR EMERGENCY STOP SWITCHES.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159465A1 (en) * 1984-01-30 1985-10-30 Deere & Company Safety device, in particular for presses
GB2318456A (en) * 1997-12-06 1998-04-22 Craig & Derricott Limited Switch
GB2318456B (en) * 1997-12-06 1998-09-23 Craig & Derricott Limited Safety switch
FR2967269A1 (en) * 2010-11-05 2012-05-11 Schneider Electric Ind Sas Identification device for use on e.g. emergency stop type push button, in industrial environment, has ring displaced in translation with respect to base, and sidewall connecting base to ring, and deformed during translation of ring

Also Published As

Publication number Publication date
CH393485A (en) 1965-06-15

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