GB766825A - Improvements in or relating to electric switch devices responsive to fluid pressure - Google Patents

Improvements in or relating to electric switch devices responsive to fluid pressure

Info

Publication number
GB766825A
GB766825A GB14829/54A GB1482954A GB766825A GB 766825 A GB766825 A GB 766825A GB 14829/54 A GB14829/54 A GB 14829/54A GB 1482954 A GB1482954 A GB 1482954A GB 766825 A GB766825 A GB 766825A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
circuit
fluid
switch
overload
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
GB14829/54A
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.)
Cutler Hammer Europe Ltd
Original Assignee
Igranic Electric Co 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
Application filed by Igranic Electric Co Ltd filed Critical Igranic Electric Co Ltd
Publication of GB766825A publication Critical patent/GB766825A/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
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
    • H01H35/346—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm in which the movable contact is formed or directly supported by the diaphragm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
    • H01H35/343—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm by snap acting diaphragm

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

766,825. Thermal 'switches. IGRANIC ELECTRIC CO., Ltd. May 20, 1954 [May 22, 1953], No. 14829/54. Class 38(5) [Also in Group XIII] A switch responsive to overload or to ambient temperature variations comprises a fluid-filled capsule consisting of a snapacting conducting diaphragm 16 joined at its periphery by . insulating sealing material 24 to a conducting member 22, the diaphragm having a central portion 18 adapted in one position of the switch to engage and so complete a circuit to the member 22. This circuit may be the one which on overload heats the fluid sufficiently to cause the diaphragm to snap upwards to break the circuit, and the diaphragm may be self-restoring or may require additional external force to restore it. In modifications, the switch is normally open, the plate 22 is replaced by another diaphragm, and the diaphragms carry contacts. The sealing material 24 may be vitreous enamel, pulverized glass or borosilicate glass, according as the members to be joined are steel, nickel-copper alloy or beryllium-copper alloy. The fluid may be water vapour.
GB14829/54A 1953-05-22 1954-05-20 Improvements in or relating to electric switch devices responsive to fluid pressure Expired GB766825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US356812A US2798130A (en) 1953-05-22 1953-05-22 Electric switch devices

Publications (1)

Publication Number Publication Date
GB766825A true GB766825A (en) 1957-01-23

Family

ID=23403051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14829/54A Expired GB766825A (en) 1953-05-22 1954-05-20 Improvements in or relating to electric switch devices responsive to fluid pressure

Country Status (2)

Country Link
US (1) US2798130A (en)
GB (1) GB766825A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916586A (en) * 1955-06-17 1959-12-08 Cutler Hammer Inc Thermal switches
US3112382A (en) * 1957-10-15 1963-11-26 Standard Thompson Corp Pressure-responsive actuating device
US2939320A (en) * 1957-10-28 1960-06-07 American Motors Corp Temperature indicating device
US2909627A (en) * 1957-12-31 1959-10-20 Bendix Aviat Corp Multiposition pressure-actuated switch
US3009031A (en) * 1958-12-08 1961-11-14 Bendix Corp Self-compensating pressure-sensitive capsule particularly adapted for sealed pressure switches
US3233059A (en) * 1962-08-22 1966-02-01 Robertshaw Controls Co Vacuum operated electrical switch or the like
DE1237688B (en) * 1963-05-13 1967-03-30 Int Standard Electric Corp Relay with a contact arrangement hermetically sealed in a housing
US3609266A (en) * 1969-04-18 1971-09-28 Eli Raitport Snap mechanism for use with an electrical switch, valve or the like
US3594522A (en) * 1969-07-24 1971-07-20 Ibm Elastic diaphragm switch
US3743993A (en) * 1972-02-02 1973-07-03 Gen Electric Thermal overload protective device
US3905233A (en) * 1974-03-26 1975-09-16 Us Army Package penetration indicating apparatus
US3908105A (en) * 1974-05-20 1975-09-23 Tyrechek Inc Valve mounted pneumatic tire pressure sensing switch
US4066851A (en) * 1975-10-30 1978-01-03 Chomerics, Inc. Keyboard switch assembly having foldable printed circuit board, integral spacer and preformed depression-type alignment fold
US4194105A (en) * 1977-01-13 1980-03-18 Itt Industries, Inc. Switches
US4211901A (en) * 1977-12-29 1980-07-08 Bridgestone Tire Company Limited Pressure sensing switch with conductive deflectable diaphragm
BE902471A (en) * 1985-05-22 1985-09-16 Velleman N V MEMBRANE FOR MEMBRANE SWITCH AND COMPOSITE ELEMENTS THEREOF.
US5164558A (en) * 1991-07-05 1992-11-17 Massachusetts Institute Of Technology Micromachined threshold pressure switch and method of manufacture
US5225643A (en) * 1992-03-17 1993-07-06 Morton International, Inc. Differential pressure switch for stored gas pressure vessel
EP1419511B1 (en) * 2001-08-20 2006-06-28 Honeywell International Inc. Snap action thermal switch
US8525055B2 (en) * 2007-05-08 2013-09-03 Bs&B Safety Systems Pressure response membrane
EP2194555A1 (en) 2008-12-04 2010-06-09 Abb Ag Actuator for an installation switching device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US360823A (en) * 1887-04-05 Electric thermostat or fire-alarm
US1102566A (en) * 1912-01-29 1914-07-07 Lewis S Besley Thermostatic circuit-controller.
US1822408A (en) * 1927-11-28 1931-09-08 King Louise Thermally-actuated circuit-controller
GB399234A (en) * 1932-04-06 1933-10-05 Gen Electric Co Ltd Improvements in or relating to thermostats
US2127575A (en) * 1935-01-17 1938-08-23 Thompson John West Induction thermostatic device
FR876658A (en) * 1938-12-03 1942-11-12 Fides Gmbh Temperature regulator
US2472625A (en) * 1944-05-23 1949-06-07 Gen Electric Electric circuit breaker
US2484932A (en) * 1946-11-29 1949-10-18 Cutler Hammer Inc Vapor pressure type thermal power element
US2562286A (en) * 1948-12-03 1951-07-31 Oswald H Milmore Temperature and pressure responsive switch
US2596171A (en) * 1949-08-03 1952-05-13 Us Army Pressure switch for fuses

Also Published As

Publication number Publication date
US2798130A (en) 1957-07-02

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