GB1153458A - Improvements in or relating to Pressure Responsive Devices - Google Patents

Improvements in or relating to Pressure Responsive Devices

Info

Publication number
GB1153458A
GB1153458A GB50683/66A GB5068366A GB1153458A GB 1153458 A GB1153458 A GB 1153458A GB 50683/66 A GB50683/66 A GB 50683/66A GB 5068366 A GB5068366 A GB 5068366A GB 1153458 A GB1153458 A GB 1153458A
Authority
GB
United Kingdom
Prior art keywords
casing
diaphragm
ring
pressure
sandwich
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
GB50683/66A
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of GB1153458A publication Critical patent/GB1153458A/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
    • H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
    • H01H35/343—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm by snap acting diaphragm

Landscapes

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

Abstract

1,153,458. Pressure gauges. TEXAS INSTRUMENTS Inc. Nov.11, 1966 [Jan.3, 1966], No.50683/66. Heading G1L. [Also in Division H1] A pressure responsive device comprises a casing 12, 14, a snap-acting diaphragm 22 mounted on the casing and defining a cavity within the casing, and force enerting means mounted on the casing adjacent the peripheral portion 25 of diaphragm 22 and operable to bend the peripheral portion 25 such that the pressure differential necessary to cause snap-action of the diaphragm 22 is adjustable. As shown, the means for bending peripheral portion 25 comprises a ring 26 which when screwed upwards presses member 27 against flexible ring 20. The motion of diaphragm 22 is transmitted by motion transfer member 131 to a switch 100 comprising a plate 102 supporting by glass sealant 112 terminal 108 carrying fixed contact 114 and terminal 110 carrying moving contact 120 on spring 116. In a second embodiment, three diaphragms 22 are used together to give a different operating pressure and this peripheral portions 25 project outside the casing being sandwiched with ring 20 between flanges on the casing, the sandwich being bent outside the casing to bend portions 25. Ring 20 in this case is integral inch member 27 to support member 131. In a third embodiment the sandwich is bent by one or two rings threaded on the outside of the casing each having a projection bearing on the sandwich. In addition the valve of pressure required to operate the diaphragm may be raised by providing a spring member (not shown) within aperture 24 one end of which is fixed and the other end of which bears against portion 23 as described in Specification 1, 077, 825.
GB50683/66A 1966-01-03 1966-11-11 Improvements in or relating to Pressure Responsive Devices Expired GB1153458A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US518404A US3378656A (en) 1966-01-03 1966-01-03 Adjustment means for electrical switch

Publications (1)

Publication Number Publication Date
GB1153458A true GB1153458A (en) 1969-05-29

Family

ID=24063784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50683/66A Expired GB1153458A (en) 1966-01-03 1966-11-11 Improvements in or relating to Pressure Responsive Devices

Country Status (3)

Country Link
US (1) US3378656A (en)
DE (1) DE1590774B1 (en)
GB (1) GB1153458A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426324A1 (en) * 1978-05-15 1979-12-14 Therm O Disc Inc PRESSURE SWITCH CONTROLLED BY A SNAP ELASTIC EFFECT DISC
EP0517674A1 (en) * 1991-06-04 1992-12-09 BITRON S.p.A. A fluid-tight electrical pressure switch for hydraulic or pneumatic circuits

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538275A (en) * 1968-10-14 1970-11-03 Fairchild Camera Instr Co Nonvibratory electric switch
US3585328A (en) * 1970-02-11 1971-06-15 Texas Instruments Inc Pressure switch with a plurality of snap acting metal diaphragms coated with metallic oxide
US3831118A (en) * 1970-08-24 1974-08-20 Fifth Dimension Inc Mercury switch
US3816685A (en) * 1972-12-26 1974-06-11 Texas Instruments Inc Pressure responsive device having improved means for calibration
JPS5247148B2 (en) * 1973-07-13 1977-11-30
US4091249A (en) * 1976-10-06 1978-05-23 Emerson Electric Co. Pressure sensitive electrical switch having a snap element
US4121073A (en) * 1977-02-28 1978-10-17 Texas Instruments Incorporated Condition responsive electrical switch having improved bridging contact means
US4283706A (en) * 1979-04-19 1981-08-11 Honda Giken Kogyo Kabushiki Kaisha Puncture detecting device
US4328406A (en) * 1979-08-02 1982-05-04 Texas Instruments Incorporated Condition responsive electrical switch and method of making
US4588886A (en) * 1983-11-14 1986-05-13 Thermo-O-Disc Incorporated Fiber optics condition sensor and method of making same
US4570148A (en) * 1984-01-23 1986-02-11 Therm-O-Disc, Incorporated Snap disc condition sensor and method for producing the same
US4573398A (en) * 1984-11-05 1986-03-04 Ranco Incorporated Pressure control device and method of making the same
US5092124A (en) * 1990-12-21 1992-03-03 Texas Instruments Incorporated Condition-responsive snap-acting member, device and method of making
US5198631A (en) * 1991-09-11 1993-03-30 General Electric Company Pressure responsive control device
US6740828B1 (en) 2003-08-08 2004-05-25 Claudio R. Dacal Arm and safety switch
US8710386B2 (en) * 2011-02-04 2014-04-29 Sensata Technologies, Inc. Fluid pressure responsive electric switch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1883251A (en) * 1931-04-11 1932-10-18 Gen Plate Co Thermostat
US2920486A (en) * 1954-09-29 1960-01-12 Gen Electric Diaphragm assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426324A1 (en) * 1978-05-15 1979-12-14 Therm O Disc Inc PRESSURE SWITCH CONTROLLED BY A SNAP ELASTIC EFFECT DISC
EP0517674A1 (en) * 1991-06-04 1992-12-09 BITRON S.p.A. A fluid-tight electrical pressure switch for hydraulic or pneumatic circuits

Also Published As

Publication number Publication date
US3378656A (en) 1968-04-16
DE1590774B1 (en) 1971-05-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE Patent expired