GB1371636A - Differential fluid pressure switches - Google Patents

Differential fluid pressure switches

Info

Publication number
GB1371636A
GB1371636A GB5871671A GB5871671A GB1371636A GB 1371636 A GB1371636 A GB 1371636A GB 5871671 A GB5871671 A GB 5871671A GB 5871671 A GB5871671 A GB 5871671A GB 1371636 A GB1371636 A GB 1371636A
Authority
GB
United Kingdom
Prior art keywords
cap
bellows
lever
switch
actuating means
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
GB5871671A
Other languages
English (en)
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.)
Westport Development and Manufacturing Co Inc
Original Assignee
Westport Development and Manufacturing Co Inc
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 Westport Development and Manufacturing Co Inc filed Critical Westport Development and Manufacturing Co Inc
Publication of GB1371636A publication Critical patent/GB1371636A/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
    • H01H35/32—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by bellows

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Measuring Fluid Pressure (AREA)
GB5871671A 1970-12-30 1971-12-17 Differential fluid pressure switches Expired GB1371636A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10265670A 1970-12-30 1970-12-30

Publications (1)

Publication Number Publication Date
GB1371636A true GB1371636A (en) 1974-10-23

Family

ID=22290980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5871671A Expired GB1371636A (en) 1970-12-30 1971-12-17 Differential fluid pressure switches

Country Status (5)

Country Link
US (1) US3742165A (de)
CA (1) CA938964A (de)
DE (1) DE2164752A1 (de)
FR (1) FR2121136A5 (de)
GB (1) GB1371636A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063057A (en) * 1975-04-23 1977-12-13 Meisenheimer Jr Daniel T Temperature compensated pressure differential sensing devices, including improved press-to-test and glass header switch mounting
US4006329A (en) * 1975-05-14 1977-02-01 Westport Development & Mfg. Co. Inc. Switch for sensing a selected ratio between two different pressures
US4439654A (en) * 1982-09-29 1984-03-27 Motorola, Inc. Waterproof control knob assembly with integral switch
DE8312296U1 (de) * 1983-04-27 1983-12-01 Ranco Inc., 43017 Dublin, Ohio Temperaturabhängig schaltender Schalter
US4645888A (en) * 1984-04-09 1987-02-24 Raychem Corporation Load break switch with safety mechanism
US7732722B1 (en) * 2009-02-24 2010-06-08 Honeywell International Inc. Hermetically sealed pressure switch with composite actuation mechanism

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA634082A (en) * 1962-01-09 A. Starbird George Pressure switch
FR694892A (fr) * 1930-05-02 1930-12-09 Interrupteur-avertisseur automatique pour circuits d'allumage dans les moteurs d'automobiles et autres
US2395007A (en) * 1944-04-10 1946-02-19 United Electric Controls Co Automatic circuit controller
US2475069A (en) * 1945-11-09 1949-07-05 Delos R Wood Warning device for refrigerators
US2693240A (en) * 1948-02-05 1954-11-02 Graviner Manufacturing Co Method and apparatus for preventing explosions and extinguishing fires
US2890305A (en) * 1957-04-15 1959-06-09 Parmatic Engineering Ltd Hermetically sealed pressure sensitive switch having exteriorly suspended actuating means
US3056004A (en) * 1959-08-10 1962-09-25 Allen V C Davis Sensitive pressure switch
US3132592A (en) * 1961-02-13 1964-05-12 Albert Products Inc Level controlled pumping systems and switch assemblies therefor
US3431378A (en) * 1967-09-27 1969-03-04 Westport Dev Mfg Co Hermetically impervious switch

Also Published As

Publication number Publication date
FR2121136A5 (de) 1972-08-18
CA938964A (en) 1973-12-25
US3742165A (en) 1973-06-26
DE2164752A1 (de) 1972-07-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee