GB1464637A - Pressure switch - Google Patents

Pressure switch

Info

Publication number
GB1464637A
GB1464637A GB4370574A GB4370574A GB1464637A GB 1464637 A GB1464637 A GB 1464637A GB 4370574 A GB4370574 A GB 4370574A GB 4370574 A GB4370574 A GB 4370574A GB 1464637 A GB1464637 A GB 1464637A
Authority
GB
United Kingdom
Prior art keywords
blade
tongue
diaphragm
spring
pressure
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
GB4370574A
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.)
EUROPE Manufacturing TRUST REG
Original Assignee
EUROPE Manufacturing TRUST REG
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
Priority claimed from US05/458,948 external-priority patent/US4104495A/en
Application filed by EUROPE Manufacturing TRUST REG filed Critical EUROPE Manufacturing TRUST REG
Publication of GB1464637A publication Critical patent/GB1464637A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs

Landscapes

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

Abstract

1464637 Fluid-pressure switches EUROPE MFG TRUST REG 9 Oct 1974 [10 Oct 1973 8 April 1974] 43705/74 Heading H1N In a fluid-pressure diaphragm operated switch, a snap-acting blade 36, Fig. 1, carrying a double contact 37 movable between a pair of stationary contacts 38, 39 has an integral tongue 40, Fig. 3, extending within an aperture 43 in the blade for engagement by the diaphragm actuator 31 and has an over centre spring 41 extending between the ends of the blade 36 and tongue 40 to maintain the contact 37 in firm engagement prior to the point of snap over. Apertures 43 and 48 are provided in the blade 36 and tongue 40 to increase the resilience and absorb impact forces occurring on contact closure. The diaphragm 18 is clamped between a pair of housing members 12, 14 and carries a rigid plate 30 supporting a domed actuator 31 carrying a slidable pin 60 in a recess for engagement with the contact tongue 40. The pin 60 forms part of a spring loaded plunger 59 supported by adjustable compression springs 75, 76 which are preset according to the required pressure settings and operating differentials. Spring 75 acts constantly on the plunger 59 while spring 76 engages stops 69 on the casing so that it is inoperative at lower pressures. The pressure inlet 22 for the diaphragm has an orifice 26 with a length determined by a bore 27 and operates to damp out transient pressure changes as in applications to domestic dishwashers and washing machines.
GB4370574A 1973-10-10 1974-10-09 Pressure switch Expired GB1464637A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40522573A 1973-10-10 1973-10-10
US05/458,948 US4104495A (en) 1973-10-10 1974-04-08 Pressure switch and actuating means responsive to low pressure

Publications (1)

Publication Number Publication Date
GB1464637A true GB1464637A (en) 1977-02-16

Family

ID=27018981

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4370574A Expired GB1464637A (en) 1973-10-10 1974-10-09 Pressure switch

Country Status (7)

Country Link
JP (1) JPS5827609B2 (en)
AU (1) AU497009B2 (en)
CA (1) CA1022975A (en)
DE (1) DE2448329A1 (en)
FR (1) FR2247801B1 (en)
GB (1) GB1464637A (en)
IT (1) IT1022734B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123211A (en) * 1982-06-24 1984-01-25 Gen Electric Electric switches
GB2287128A (en) * 1994-03-03 1995-09-06 M & G Tankers & Trailers Ltd Fluid operated switch

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535707C2 (en) * 1975-08-09 1985-02-28 Karl Dungs Gmbh & Co, 7067 Urbach Pressure switch
US4081637A (en) * 1976-06-21 1978-03-28 Robertshaw Controls Company Pressure operated switch construction having a one-piece base and control shaft bracket structure
US4307272A (en) * 1979-02-21 1981-12-22 The Echlin Manufacturing Company Pressure actuated switch
FR2472827A1 (en) * 1979-12-26 1981-07-03 Crouzet Sa Snap action switch with mobile leaf - biassed against one of two contacts by two central arms sitting in notches in common terminal
US4532390A (en) * 1982-11-17 1985-07-30 Signal Lux S.P.A. Diaphragm pressure switch for controlling small pressure gradients
EP0169280A1 (en) * 1984-07-24 1986-01-29 AB Electronic Components Limited Pressure switch
DE102010041280B4 (en) * 2010-09-23 2012-12-27 Siemens Aktiengesellschaft Pressure switching device with controllable reset element for diagnosing the functionality at applied working pressure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4515391Y1 (en) * 1966-12-19 1970-06-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123211A (en) * 1982-06-24 1984-01-25 Gen Electric Electric switches
GB2287128A (en) * 1994-03-03 1995-09-06 M & G Tankers & Trailers Ltd Fluid operated switch

Also Published As

Publication number Publication date
JPS5827609B2 (en) 1983-06-10
FR2247801B1 (en) 1979-03-16
DE2448329A1 (en) 1975-04-17
JPS5077873A (en) 1975-06-25
AU7420974A (en) 1976-04-15
CA1022975A (en) 1977-12-20
IT1022734B (en) 1978-04-20
AU497009B2 (en) 1978-11-23
FR2247801A1 (en) 1975-05-09

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Legal Events

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