GB1474450A - Electric switches - Google Patents

Electric switches

Info

Publication number
GB1474450A
GB1474450A GB3882974A GB3882974A GB1474450A GB 1474450 A GB1474450 A GB 1474450A GB 3882974 A GB3882974 A GB 3882974A GB 3882974 A GB3882974 A GB 3882974A GB 1474450 A GB1474450 A GB 1474450A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
fluid pressure
nickel
grooved regions
switches
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
GB3882974A
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 GB3882974A priority Critical patent/GB1474450A/en
Priority to FR7526857A priority patent/FR2284177A1/en
Publication of GB1474450A publication Critical patent/GB1474450A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/7006—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard comprising a separate movable contact element for each switch site, all other elements being integrated in layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/026—Separate dome contact

Landscapes

  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

1474450 Mechanical switches; fluid pressure switches STANDARD TELEPHONES & CABLES Ltd 5 Sept 1974 38829/74 Heading H1N An electric switch contact diaphragm comprises a resilient domed portion 20, Fig. 2, joined to one or more coaxial frusto-conical sections 201, 202 by grooved regions 204, 205. The arrangement is such that on the application of pressure as by fluid pressure at orifice 27 or by a push button (17) Fig. 1 (not shown) on a flexible strip 16 the diaphragm acts as a Belleville spring and has a reducing spring rate. The grooved regions 204, 205 engage contacts 22, 23 on a fixed base 24 which may be a printed circuit board. The diaphragm may be made of nickel-iron-chromium alloy or of beryllium copper or phosphor bronze and may be plated with hard gold on a nickel interlayer.
GB3882974A 1974-09-06 1974-09-06 Electric switches Expired GB1474450A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3882974A GB1474450A (en) 1974-09-06 1974-09-06 Electric switches
FR7526857A FR2284177A1 (en) 1974-09-06 1975-09-02 DIAPHRAGM ELECTRIC SWITCHING BODY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3882974A GB1474450A (en) 1974-09-06 1974-09-06 Electric switches

Publications (1)

Publication Number Publication Date
GB1474450A true GB1474450A (en) 1977-05-25

Family

ID=10405940

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3882974A Expired GB1474450A (en) 1974-09-06 1974-09-06 Electric switches

Country Status (2)

Country Link
FR (1) FR2284177A1 (en)
GB (1) GB1474450A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192307A (en) * 1986-05-02 1988-01-06 Shinetsu Polymer Co Push-button keyboard switch unit
EP1269219A1 (en) * 2000-02-29 2003-01-02 Benthos Inc. Pressure-sensitive switch, its method of calibration and use in a hydrophone array

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194105A (en) * 1977-01-13 1980-03-18 Itt Industries, Inc. Switches
DE2739137C2 (en) * 1977-08-31 1983-07-14 Braun Ag, 6000 Frankfurt Housing for hand-held devices
US4245138A (en) * 1978-11-17 1981-01-13 Rogers Corporation Tactile element and keyboard including the tactile element
FR2442502A1 (en) * 1978-11-24 1980-06-20 Orega Cifte TOUCH TAP TOUCH KEYBOARD
FI66501C (en) * 1979-04-06 1984-10-10 Autophon Ag TRYCKKNAPPSSTROEMSTAELLARE
US4376238A (en) * 1980-03-12 1983-03-08 International Computers Limited Electrical devices
US4418257A (en) * 1981-11-23 1983-11-29 The Keyboard Company Keyboard switch
US4851807A (en) * 1987-09-04 1989-07-25 Therm-O-Disc, Incorporated Electric switch and contact terminal arrangement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2192307A (en) * 1986-05-02 1988-01-06 Shinetsu Polymer Co Push-button keyboard switch unit
GB2192307B (en) * 1986-05-02 1990-08-22 Shinetsu Polymer Co Push-button keyboard switch unit
EP1269219A1 (en) * 2000-02-29 2003-01-02 Benthos Inc. Pressure-sensitive switch, its method of calibration and use in a hydrophone array
EP1269219A4 (en) * 2000-02-29 2012-06-27 Benthos Inc Pressure-sensitive switch, its method of calibration and use in a hydrophone array

Also Published As

Publication number Publication date
FR2284177A1 (en) 1976-04-02
FR2284177B1 (en) 1981-01-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee