EP0287531A3 - Fluid-tight electrical pressure switch for hydraulic or pneumatic circuits - Google Patents

Fluid-tight electrical pressure switch for hydraulic or pneumatic circuits Download PDF

Info

Publication number
EP0287531A3
EP0287531A3 EP88830158A EP88830158A EP0287531A3 EP 0287531 A3 EP0287531 A3 EP 0287531A3 EP 88830158 A EP88830158 A EP 88830158A EP 88830158 A EP88830158 A EP 88830158A EP 0287531 A3 EP0287531 A3 EP 0287531A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic
fluid
pressure switch
pneumatic circuits
biasing spring
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.)
Ceased
Application number
EP88830158A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0287531A2 (en
Inventor
Virginio Maggioni
Alessandro Giupponi
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.)
Industrie Magneti Marelli SRL
Original Assignee
Industrie Magneti Marelli SRL
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 Industrie Magneti Marelli SRL filed Critical Industrie Magneti Marelli SRL
Publication of EP0287531A2 publication Critical patent/EP0287531A2/en
Publication of EP0287531A3 publication Critical patent/EP0287531A3/en
Ceased 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
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
EP88830158A 1987-04-14 1988-04-12 Fluid-tight electrical pressure switch for hydraulic or pneumatic circuits Ceased EP0287531A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT5323587U 1987-04-14
IT5323587U IT210649Z2 (it) 1987-04-14 1987-04-14 Interruttore elettrico a pressione a tenuta stagna per circuiti idraulici o pneumatici

Publications (2)

Publication Number Publication Date
EP0287531A2 EP0287531A2 (en) 1988-10-19
EP0287531A3 true EP0287531A3 (en) 1990-07-04

Family

ID=11281100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88830158A Ceased EP0287531A3 (en) 1987-04-14 1988-04-12 Fluid-tight electrical pressure switch for hydraulic or pneumatic circuits

Country Status (2)

Country Link
EP (1) EP0287531A3 (it)
IT (1) IT210649Z2 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2336212A (en) * 1998-04-06 1999-10-13 Ranco Controls Ltd Pressure sensor with adjustment means
EP2158599B1 (en) 2007-05-29 2012-12-05 Norgren GmbH Pressure switch with an integrated diaphragm and switch
CN110454531B (zh) * 2019-07-11 2021-03-02 江苏长龄液压股份有限公司 一种中心设有检测介质的弹簧

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844679A (en) * 1954-03-01 1958-07-22 Selby W Brewer Pressure responsive switch
DE3326680A1 (de) * 1983-07-23 1985-01-31 Robert Scheuffele GmbH & Co KG, 7120 Bietigheim-Bissingen Druckschalter
GB2186118A (en) * 1986-02-01 1987-08-05 Scheuffele Robert Gmbh Co Kg Pressure switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844679A (en) * 1954-03-01 1958-07-22 Selby W Brewer Pressure responsive switch
DE3326680A1 (de) * 1983-07-23 1985-01-31 Robert Scheuffele GmbH & Co KG, 7120 Bietigheim-Bissingen Druckschalter
GB2186118A (en) * 1986-02-01 1987-08-05 Scheuffele Robert Gmbh Co Kg Pressure switch

Also Published As

Publication number Publication date
IT210649Z2 (it) 1989-01-11
IT8753235V0 (it) 1987-04-14
EP0287531A2 (en) 1988-10-19

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