GB986131A - Improvements in or relating to pressure switches - Google Patents

Improvements in or relating to pressure switches

Info

Publication number
GB986131A
GB986131A GB28270/60A GB2827060A GB986131A GB 986131 A GB986131 A GB 986131A GB 28270/60 A GB28270/60 A GB 28270/60A GB 2827060 A GB2827060 A GB 2827060A GB 986131 A GB986131 A GB 986131A
Authority
GB
United Kingdom
Prior art keywords
separation
disc
contacts
aug
thermal expansion
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
GB28270/60A
Inventor
Robert George Pannell
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.)
Wilkinson Sword Ltd
Graviner Manufacturing Co Ltd
Original Assignee
Wilkinson Sword Ltd
Graviner Manufacturing 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
Priority to NL267463D priority Critical patent/NL267463A/xx
Application filed by Wilkinson Sword Ltd, Graviner Manufacturing Co Ltd filed Critical Wilkinson Sword Ltd
Priority to GB28270/60A priority patent/GB986131A/en
Priority to CH873161A priority patent/CH378394A/en
Priority to DEG32796A priority patent/DE1223922B/en
Priority to FR869662A priority patent/FR1296458A/en
Priority to US129154A priority patent/US3140369A/en
Publication of GB986131A publication Critical patent/GB986131A/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
    • H01H35/26—Details
    • H01H35/28—Compensation for variation of ambient pressure or temperature

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermally Actuated Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

986,131. Fluid actuation of switches. GRAVINER MANUFACTURING CO. Ltd., and WILKINSON SWORD Ltd. Aug. 1, 1961 [Aug. 16, 1960], No. 28270/60. Heading H2B. A pressure responsive device is compensated for differential thermal expansion of its supporting members by means of a bi-metallic disc 15. The device comprises two electrical contacts 8, 14, whose separation is dependent upon the pressure on a diaphragm 4, and a bimetal disc 15 which opposes any variation in the separation of the contacts 8, 14 due to differential thermal expansion. The contacts 14, 8 are mounted respectively on the bi-metal disc 15 and on a stand off insulator 6 on the corrugated metal diaphragm 4 and their separation is adjustable by rotating a screw-threaded member 18. The bi-metal disc 15 is clamped to a recessed support 16; its effective area and therefore the degree of compensation applied is governed by the area of the recess in the support 16 which is adjusted while first setting up the switch to obtain a near constant contact separation over the desired range of temperature.
GB28270/60A 1960-08-16 1960-08-16 Improvements in or relating to pressure switches Expired GB986131A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL267463D NL267463A (en) 1960-08-16
GB28270/60A GB986131A (en) 1960-08-16 1960-08-16 Improvements in or relating to pressure switches
CH873161A CH378394A (en) 1960-08-16 1961-07-25 Pressure sensitive electrical switch
DEG32796A DE1223922B (en) 1960-08-16 1961-07-26 Pressurized electrical device
FR869662A FR1296458A (en) 1960-08-16 1961-08-01 Pressure sensitive devices of the kind provided with contacts and more particularly switches
US129154A US3140369A (en) 1960-08-16 1961-08-03 Pressure operated electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28270/60A GB986131A (en) 1960-08-16 1960-08-16 Improvements in or relating to pressure switches

Publications (1)

Publication Number Publication Date
GB986131A true GB986131A (en) 1965-03-17

Family

ID=10272993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28270/60A Expired GB986131A (en) 1960-08-16 1960-08-16 Improvements in or relating to pressure switches

Country Status (5)

Country Link
US (1) US3140369A (en)
CH (1) CH378394A (en)
DE (1) DE1223922B (en)
GB (1) GB986131A (en)
NL (1) NL267463A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255628A (en) * 1977-09-27 1981-03-10 Fratelli Borletti S.P.A. Insufficient pressure detector device for motor vehicle tires

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1640394B1 (en) * 1967-07-06 1972-01-20 Herion Werke Kg PRESSURE DEPENDENT ELECTRIC SWITCH
US8710386B2 (en) * 2011-02-04 2014-04-29 Sensata Technologies, Inc. Fluid pressure responsive electric switch

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1954142A (en) * 1931-10-15 1934-04-10 Gen Electric Control system
US2279140A (en) * 1940-07-11 1942-04-07 Leo J Kellen Electrical tire pressure gauge and indicator
US2454288A (en) * 1945-11-09 1948-11-23 Marion L Michaelson Heat-pressure operated warning switch
US2736970A (en) * 1951-12-17 1956-03-06 Murray Corp Laundry dryers
US2791655A (en) * 1954-04-26 1957-05-07 Napier & Son Ltd Torque responsive devices
US2873328A (en) * 1955-08-29 1959-02-10 Baso Inc Thermostat for low power circuits
DE1033819B (en) * 1957-01-31 1958-07-10 Eckerfeld Alfred Instantaneous water heaters, especially electric water heaters with low water protection
US2978879A (en) * 1958-06-30 1961-04-11 Gen Motors Corp Refrigerating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255628A (en) * 1977-09-27 1981-03-10 Fratelli Borletti S.P.A. Insufficient pressure detector device for motor vehicle tires

Also Published As

Publication number Publication date
CH378394A (en) 1964-06-15
DE1223922B (en) 1966-09-01
US3140369A (en) 1964-07-07
NL267463A (en)

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