EP0616721B1 - Pressure switch device - Google Patents

Pressure switch device Download PDF

Info

Publication number
EP0616721B1
EP0616721B1 EP93922991A EP93922991A EP0616721B1 EP 0616721 B1 EP0616721 B1 EP 0616721B1 EP 93922991 A EP93922991 A EP 93922991A EP 93922991 A EP93922991 A EP 93922991A EP 0616721 B1 EP0616721 B1 EP 0616721B1
Authority
EP
European Patent Office
Prior art keywords
hold
diaphragm
switch device
diaphragm member
pressure switch
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 - Lifetime
Application number
EP93922991A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0616721A1 (en
Inventor
Anthony Kckenzie Owler
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 TELEKTRON SAFETY SYSTEMS Ltd
TELEKTRON HAZARDOUS AREA PRODUCTS 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
Publication of EP0616721A1 publication Critical patent/EP0616721A1/en
Application granted granted Critical
Publication of EP0616721B1 publication Critical patent/EP0616721B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention also provides a pressure switch device of the kind described in which means is provided to hold the diaphragm in its inoperative position until such time as it is desired that the diaphragm may be movable to the operating position if the predetermined pressure differential exists. Otherwise expressed, the invention provides a pressure switch device of the kind described including means by which pressure responsive switch operation can be inhibited until the device is selectively put into operation.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Braking Systems And Boosters (AREA)
EP93922991A 1992-10-13 1993-10-13 Pressure switch device Expired - Lifetime EP0616721B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9221492 1992-10-13
GB929221492A GB9221492D0 (en) 1992-10-13 1992-10-13 Pressure switch device
PCT/GB1993/002117 WO1994009503A1 (en) 1992-10-13 1993-10-13 Pressure switch device

Publications (2)

Publication Number Publication Date
EP0616721A1 EP0616721A1 (en) 1994-09-28
EP0616721B1 true EP0616721B1 (en) 1997-12-29

Family

ID=10723374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93922991A Expired - Lifetime EP0616721B1 (en) 1992-10-13 1993-10-13 Pressure switch device

Country Status (8)

Country Link
EP (1) EP0616721B1 (enExample)
AT (1) ATE161654T1 (enExample)
AU (1) AU5283093A (enExample)
DE (1) DE69315978T2 (enExample)
FI (1) FI942770L (enExample)
GB (1) GB9221492D0 (enExample)
NO (1) NO307396B1 (enExample)
WO (1) WO1994009503A1 (enExample)

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 (de) * 1959-11-14 1968-08-22 Bosch Gmbh Robert Vorrichtung zum Verhueten des unzeitgemaessen Einschaltens von elektrischen Andrehmotoren fuer Brennkraftmaschinen
GB1203413A (en) * 1966-09-28 1970-08-26 Inertia Switch Ltd Fluid pressure operated electric switches with magnetic restoring means
DE2257691A1 (de) * 1972-11-24 1974-05-30 Walter Beck Kg Kontroll Und Fe Hydraulisch oder druckluftbetaetigte membran-hub-dose
EP0003188A1 (fr) * 1978-01-11 1979-07-25 SAUNIER DUVAL - Société Anonyme Manocontact à différentielle réglable pour système de contrôle et de sécurité du débit d'air nécessaire à la combustion d'un brûleur à gaz

Also Published As

Publication number Publication date
ATE161654T1 (de) 1998-01-15
GB9221492D0 (en) 1992-11-25
NO942123D0 (no) 1994-06-08
FI942770A0 (fi) 1994-06-10
EP0616721A1 (en) 1994-09-28
DE69315978D1 (de) 1998-02-05
NO307396B1 (no) 2000-03-27
NO942123L (enExample) 1994-06-13
AU5283093A (en) 1994-05-09
WO1994009503A1 (en) 1994-04-28
FI942770A7 (fi) 1994-06-10
FI942770L (fi) 1994-06-10
DE69315978T2 (de) 1998-07-30

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