GB1399198A - Electrical switch - Google Patents

Electrical switch

Info

Publication number
GB1399198A
GB1399198A GB2353073A GB2353073A GB1399198A GB 1399198 A GB1399198 A GB 1399198A GB 2353073 A GB2353073 A GB 2353073A GB 2353073 A GB2353073 A GB 2353073A GB 1399198 A GB1399198 A GB 1399198A
Authority
GB
United Kingdom
Prior art keywords
contact
fixed contact
engages
arm
electrically connected
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
GB2353073A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2353073A priority Critical patent/GB1399198A/en
Publication of GB1399198A publication Critical patent/GB1399198A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/20—Contact arrangements for providing make-before-break operation, e.g. for on-load tap-changing

Landscapes

  • Push-Button Switches (AREA)

Abstract

1399198 Retractive switches STANDARD TELEPHONES & CABLES Ltd 17 May 1973 23530/73 Heading H1N A retractive snap-action changeover switch having make-before-break features is actuated by deflection of an electrically conductive helical tension spring 12, by means of a lever 15, until the spring force acts below the pivot point 7 of an arm 9 carrying a movable contact 10 whereupon the movable contact 10 disengages from contact with a fixed contact 4 and engages a fixed contact 5 with a snap action but in so doing the spring 12 which is electrically connected to contact 10 by being attached to arm 9 first engages an auxiliary resilient contact 13 which is electrically connected to the fixed contact 5 by being welded to a common terminal member 3. The auxiliary contact 13 is of phosphor bronze or beryllium copper and for some applications of the switch the fixed contact 5 may be dispensed with.
GB2353073A 1973-05-17 1973-05-17 Electrical switch Expired GB1399198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2353073A GB1399198A (en) 1973-05-17 1973-05-17 Electrical switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2353073A GB1399198A (en) 1973-05-17 1973-05-17 Electrical switch

Publications (1)

Publication Number Publication Date
GB1399198A true GB1399198A (en) 1975-06-25

Family

ID=10197127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2353073A Expired GB1399198A (en) 1973-05-17 1973-05-17 Electrical switch

Country Status (1)

Country Link
GB (1) GB1399198A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees