GB9221492D0 - Pressure switch device - Google Patents

Pressure switch device

Info

Publication number
GB9221492D0
GB9221492D0 GB929221492A GB9221492A GB9221492D0 GB 9221492 D0 GB9221492 D0 GB 9221492D0 GB 929221492 A GB929221492 A GB 929221492A GB 9221492 A GB9221492 A GB 9221492A GB 9221492 D0 GB9221492 D0 GB 9221492D0
Authority
GB
United Kingdom
Prior art keywords
diaphragm
movement
assembly
plungers
switch device
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.)
Pending
Application number
GB929221492A
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.)
Expo Safety Systems Ltd
Original Assignee
Expo Safety Systems 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 Expo Safety Systems Ltd filed Critical Expo Safety Systems Ltd
Priority to GB929221492A priority Critical patent/GB9221492D0/en
Publication of GB9221492D0 publication Critical patent/GB9221492D0/en
Priority to EP93922991A priority patent/EP0616721B1/en
Priority to DE69315978T priority patent/DE69315978T2/en
Priority to AU52830/93A priority patent/AU5283093A/en
Priority to PCT/GB1993/002117 priority patent/WO1994009503A1/en
Priority to AT93922991T priority patent/ATE161654T1/en
Priority to NO942123A priority patent/NO307396B1/en
Priority to FI942770A priority patent/FI942770A0/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01H5/02—Energy stored by the attraction or repulsion of magnetic parts
    • 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
    • H01H35/26—Details
    • H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
    • H01H35/2614—Means for adjustment of "ON" or "OFF" operating pressure by varying the bias on the pressure sensitive element
    • H01H35/2621—Means for adjustment of "ON" or "OFF" operating pressure by varying the bias on the pressure sensitive element the bias being magnetic

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

A pressure operated switch device in which switch operation is effected by movement of the diaphragm in response to a fluid pressure difference across it, permanent magnets (40, 41) hold the diagphragm assembly (10) against switch operating movement until a reset device (45) is operated to release the diaphragm assembly from the magnets. A further permanent magnet (32) assists snap action and movement of the diaphragm assembly against the plungers of microswitches (20, 21), mounted on a bracket (25) which limits diaphragm movement against the plungers. A return spring (36) biasses the diaphragm assembly against the permanent magnets (40, 41).
GB929221492A 1992-10-13 1992-10-13 Pressure switch device Pending GB9221492D0 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB929221492A GB9221492D0 (en) 1992-10-13 1992-10-13 Pressure switch device
EP93922991A EP0616721B1 (en) 1992-10-13 1993-10-13 Pressure switch device
DE69315978T DE69315978T2 (en) 1992-10-13 1993-10-13 PRESSURE SWITCH DEVICE
AU52830/93A AU5283093A (en) 1992-10-13 1993-10-13 Pressure switch device
PCT/GB1993/002117 WO1994009503A1 (en) 1992-10-13 1993-10-13 Pressure switch device
AT93922991T ATE161654T1 (en) 1992-10-13 1993-10-13 PRESSURE SWITCH DEVICE
NO942123A NO307396B1 (en) 1992-10-13 1994-06-08 Pressure Switch
FI942770A FI942770A0 (en) 1992-10-13 1994-06-10 Pressure Switch Device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929221492A GB9221492D0 (en) 1992-10-13 1992-10-13 Pressure switch device

Publications (1)

Publication Number Publication Date
GB9221492D0 true GB9221492D0 (en) 1992-11-25

Family

ID=10723374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB929221492A Pending GB9221492D0 (en) 1992-10-13 1992-10-13 Pressure switch device

Country Status (8)

Country Link
EP (1) EP0616721B1 (en)
AT (1) ATE161654T1 (en)
AU (1) AU5283093A (en)
DE (1) DE69315978T2 (en)
FI (1) FI942770A0 (en)
GB (1) GB9221492D0 (en)
NO (1) NO307396B1 (en)
WO (1) WO1994009503A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7157653B1 (en) 2005-09-20 2007-01-02 Deltrol Controls Magnetic latching switch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275832B (en) * 1959-11-14 1968-08-22 Bosch Gmbh Robert Device for preventing the untimely switching on of electric starting motors for internal combustion engines
GB1203413A (en) * 1966-09-28 1970-08-26 Inertia Switch Ltd Fluid pressure operated electric switches with magnetic restoring means
DE2257691A1 (en) * 1972-11-24 1974-05-30 Walter Beck Kg Kontroll Und Fe HYDRAULIC OR COMPRESSED AIR ACTUATED DIAPHRAGM HUB JACK
EP0003188A1 (en) * 1978-01-11 1979-07-25 SAUNIER DUVAL - Société Anonyme Adjustable air pressure sensitive switch in a safety device for the control of the air flow necessary for the combustion in a gas burner

Also Published As

Publication number Publication date
NO307396B1 (en) 2000-03-27
FI942770A (en) 1994-06-10
EP0616721A1 (en) 1994-09-28
DE69315978D1 (en) 1998-02-05
FI942770A0 (en) 1994-06-10
ATE161654T1 (en) 1998-01-15
EP0616721B1 (en) 1997-12-29
DE69315978T2 (en) 1998-07-30
WO1994009503A1 (en) 1994-04-28
AU5283093A (en) 1994-05-09
NO942123D0 (en) 1994-06-08
NO942123L (en) 1994-06-13

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