FR2295550A1 - Pressure medium operated switch - has movable element which operates three sets of contacts one after another - Google Patents

Pressure medium operated switch - has movable element which operates three sets of contacts one after another

Info

Publication number
FR2295550A1
FR2295550A1 FR7538497A FR7538497A FR2295550A1 FR 2295550 A1 FR2295550 A1 FR 2295550A1 FR 7538497 A FR7538497 A FR 7538497A FR 7538497 A FR7538497 A FR 7538497A FR 2295550 A1 FR2295550 A1 FR 2295550A1
Authority
FR
France
Prior art keywords
pressure medium
contact
contacts
movable
movable element
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.)
Withdrawn
Application number
FR7538497A
Other languages
French (fr)
Inventor
Harry Simister Bottoms
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co 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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Publication of FR2295550A1 publication Critical patent/FR2295550A1/en
Withdrawn legal-status Critical Current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
    • H01H35/26—Details
    • H01H35/2657—Details with different switches operated at substantially different pressures

Landscapes

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

Abstract

The switch comprises a body with a channel (14) for the pressure medium and the movable element is operated by the pressure medium and in turn operates a rocking bridge element which presses on the free ends of contact springs carrying the movable contacts; each movable contact requires a different pressure for its operation, with the first contact requiring the weakest force, and the third contact the strongest; when the pressure in the channel rises, the movable element and the bridge element are gradually moved, so that the bridge element closes contacts one-by-one. The bridge element rocks, so that the first contact is closed without second or third being closed, and the second is closed without closing the third.
FR7538497A 1974-12-18 1975-12-16 Pressure medium operated switch - has movable element which operates three sets of contacts one after another Withdrawn FR2295550A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5457674 1974-12-18

Publications (1)

Publication Number Publication Date
FR2295550A1 true FR2295550A1 (en) 1976-07-16

Family

ID=10471461

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7538497A Withdrawn FR2295550A1 (en) 1974-12-18 1975-12-16 Pressure medium operated switch - has movable element which operates three sets of contacts one after another

Country Status (3)

Country Link
JP (1) JPS5186771A (en)
DE (1) DE2556498A1 (en)
FR (1) FR2295550A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385090A1 (en) * 1977-03-21 1978-10-20 Texas Instruments Italia Spa IMPROVEMENT OF PNEUMATIC OR HYDRAULIC PRESSURE DETECTORS, WITH AN INCREASE IN THE NUMBER OF INTERVENTION THRESHOLDS

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035941Y2 (en) * 1980-05-19 1985-10-25 株式会社三和電機製作所 pressure switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385090A1 (en) * 1977-03-21 1978-10-20 Texas Instruments Italia Spa IMPROVEMENT OF PNEUMATIC OR HYDRAULIC PRESSURE DETECTORS, WITH AN INCREASE IN THE NUMBER OF INTERVENTION THRESHOLDS

Also Published As

Publication number Publication date
DE2556498A1 (en) 1976-07-01
JPS5186771A (en) 1976-07-29

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Legal Events

Date Code Title Description
ST Notification of lapse