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GB550767A - Improvement in differential pressure switch - Google Patents

Improvement in differential pressure switch

Info

Publication number
GB550767A
GB550767A GB2071/42A GB207142A GB550767A GB 550767 A GB550767 A GB 550767A GB 2071/42 A GB2071/42 A GB 2071/42A GB 207142 A GB207142 A GB 207142A GB 550767 A GB550767 A GB 550767A
Authority
GB
United Kingdom
Prior art keywords
improvement
differential pressure
pressure switch
admitted
chambers
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
GB2071/42A
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.)
HONEYWELL BROWN Ltd
Original Assignee
HONEYWELL BROWN 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 HONEYWELL BROWN Ltd filed Critical HONEYWELL BROWN Ltd
Publication of GB550767A publication Critical patent/GB550767A/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
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder

Landscapes

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

Abstract

550,767. Actuation of switches. HONEYWELLBROWN, Ltd. Feb. 16, 1942, No. 2071. Convention date, April 3, 1941. [Class 38 (v)] A rod 25 carrying a contact 35 is actuated by the difference in pressure in the two chambers at its ends so as to engage or disengage one or more fixed contacts 50. The contacts are all in one of the chambers to which liquid at greater than atmospheric pressure is admitted through a passage 22. Liquid is admitted to the other chamber through a passage 18. A spring 41 also biases the rod 25 and the contact 35 may be self aligning and biased by a spring 31. Specification 495,930 is referred to.
GB2071/42A 1941-04-03 1942-02-16 Improvement in differential pressure switch Expired GB550767A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US386581A US2431674A (en) 1941-04-03 1941-04-03 Differential pressure switch

Publications (1)

Publication Number Publication Date
GB550767A true GB550767A (en) 1943-01-22

Family

ID=23526194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2071/42A Expired GB550767A (en) 1941-04-03 1942-02-16 Improvement in differential pressure switch

Country Status (2)

Country Link
US (1) US2431674A (en)
GB (1) GB550767A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859296A (en) * 1956-11-20 1958-11-04 Standard Tool And Mfg Co Fluid cylinder with circuit closer
US2983956A (en) * 1958-03-13 1961-05-16 Essex Wire Corp Injection molding machine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732450A (en) * 1956-01-24 Stevenson
US2499262A (en) * 1948-07-24 1950-02-28 Ames Spot Welder Co Inc Self-adjusting pneumatic pressure switch
US2604561A (en) * 1948-11-22 1952-07-22 Joseph M Simon Pressure differential switch
US2844679A (en) * 1954-03-01 1958-07-22 Selby W Brewer Pressure responsive switch
US3350524A (en) * 1966-10-03 1967-10-31 Francis D Atkinson Differential pressure control switch

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1444403A (en) * 1923-02-06 System for axjtovehici
US1250210A (en) * 1915-05-20 1917-12-18 Taylor Instrument Co Fluid-pressure-controlled switch.
US1202577A (en) * 1915-08-06 1916-10-24 Rudolph James Peschman Circuit-closing valve for internal-combustion engines.
US1542931A (en) * 1923-04-21 1925-06-23 Taylor Instrument Co Automatic electric switch
US1900229A (en) * 1929-05-27 1933-03-07 Claybourn Process Corp Safety device for pressure systems
US1850626A (en) * 1929-09-16 1932-03-22 Westinghouse Air Brake Co Low pressure warning device
USRE20351E (en) * 1933-08-19 1937-05-04 Tibe deflation indicator
US2110342A (en) * 1937-07-06 1938-03-08 Salvo Pete Safety device for hydraulic brakes
US2245460A (en) * 1939-02-28 1941-06-10 Ehrlich I Pressure actuated electrical tire signal
US2237524A (en) * 1939-03-16 1941-04-08 Signal Air Company Tire inflation signal
US2239348A (en) * 1939-05-05 1941-04-22 Elsie Wirtanen Hydraulic brake safety unit
US2335073A (en) * 1940-12-27 1943-11-23 United Aircraft Corp Pressure actuated switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859296A (en) * 1956-11-20 1958-11-04 Standard Tool And Mfg Co Fluid cylinder with circuit closer
US2983956A (en) * 1958-03-13 1961-05-16 Essex Wire Corp Injection molding machine

Also Published As

Publication number Publication date
US2431674A (en) 1947-12-02

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