GB1449855A - Condition responsive device having means for calibration - Google Patents

Condition responsive device having means for calibration

Info

Publication number
GB1449855A
GB1449855A GB4419873A GB4419873A GB1449855A GB 1449855 A GB1449855 A GB 1449855A GB 4419873 A GB4419873 A GB 4419873A GB 4419873 A GB4419873 A GB 4419873A GB 1449855 A GB1449855 A GB 1449855A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
slope
responsive device
deformable
point
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
GB4419873A
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 GB1449855A publication Critical patent/GB1449855A/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
    • 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

Landscapes

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

Abstract

1449855 Disc springs; toggles TEXAS INSTRUMENTS Inc 20 Sept 1973 [26 Dec 1972] 44198/73 Headings F2S and F2K [Also in Division H1] In a condition (e.g. pressure) responsive device comprising a circular snap-acting diaphragm 36, Fig. 1, having a dished surface, the diaphragm is calibrated by a member 38 having a deformable annular flange 74 the slope of which is varied to affect the actuation point of the diaphragm and which has a deformable inner conical portion 76 the slope of which is adjusted to vary the deactuation point of the diaphragm. The two portions 74, 76 are integrally connected by a thin grooved annular region 80 which permits relative distortion and provides an annular abutment line with the diaphragm. In an arrangement for moving a switch contact 34 towards or away from a fixed contact 19 through a push rod 16, fluid pressure is applied to the diaphragm via a connector 44 containing a hollow adjustment screw 50 for varying the load on a calibrating spring 56 in engagement with the diaphragm.
GB4419873A 1972-12-26 1973-09-20 Condition responsive device having means for calibration Expired GB1449855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00317905A US3816685A (en) 1972-12-26 1972-12-26 Pressure responsive device having improved means for calibration

Publications (1)

Publication Number Publication Date
GB1449855A true GB1449855A (en) 1976-09-15

Family

ID=23235766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4419873A Expired GB1449855A (en) 1972-12-26 1973-09-20 Condition responsive device having means for calibration

Country Status (7)

Country Link
US (1) US3816685A (en)
JP (1) JPS576771B2 (en)
DE (1) DE2360609C2 (en)
FR (1) FR2211715B1 (en)
GB (1) GB1449855A (en)
IT (1) IT994403B (en)
NL (1) NL175116C (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703283C2 (en) * 1976-02-03 1984-09-06 Smiths Industries Public Ltd. Co., London Pressure sensitive diaphragm
US4219710A (en) * 1976-04-15 1980-08-26 Stop Alert Corporation Pressure change responsive sensor and related vacuum operable switch assembly
US4091249A (en) * 1976-10-06 1978-05-23 Emerson Electric Co. Pressure sensitive electrical switch having a snap element
GB2005474B (en) * 1977-09-29 1982-04-07 Texas Instruments Inc Condition responsive devices
US4169390A (en) * 1978-03-20 1979-10-02 Allen-Bradley Company Adjusting mechanism for a snap-acting Belleville washer
US4243858A (en) * 1979-01-19 1981-01-06 Therm-O-Disc Incorporated Snap disc operated pressure switch
US4296287A (en) * 1979-11-23 1981-10-20 Texas Instruments Incorporated Weatherproofed condition responsive switch
JPS5811844U (en) * 1981-07-17 1983-01-25 株式会社ボッシュオートモーティブ　システム pressure switch
CA1279684C (en) * 1984-10-02 1991-01-29 Takahiro Sakakino Pressure sensitive switch
US4573398A (en) * 1984-11-05 1986-03-04 Ranco Incorporated Pressure control device and method of making the same
US4633579A (en) * 1984-11-19 1987-01-06 Texas Instruments Incorporated Method for making a pressure responsive switch
US4667069A (en) * 1985-08-16 1987-05-19 Ranco Incorporated Multiple disc pressure responsive control device
JP2785871B2 (en) * 1988-05-11 1998-08-13 株式会社 不二工機 Refrigerant fluid pressure sensitive switch
US4947674A (en) * 1988-09-07 1990-08-14 Commonwealth Edison Limit switch calibration system
US5198631A (en) * 1991-09-11 1993-03-30 General Electric Company Pressure responsive control device
US5304758A (en) * 1992-04-30 1994-04-19 Bendix Atlantic Inflator Company Temperature compensated low pressure switch for hybrid inflators
US5482439A (en) * 1995-01-09 1996-01-09 Chen; Chi-Wen Power breaker for a compressor for automobiles with a curved plug and wrinkled control disk
DE69633161T2 (en) * 1995-09-19 2005-01-27 Texas Instruments Inc., Dallas Fluid pressure responsive switch and method of assembling same
US5808255A (en) * 1996-07-22 1998-09-15 Texas Instruments Incorporated Fluid pressure responsive electric switch
FR2810377B1 (en) * 2000-06-14 2002-12-06 Lacroix Soc E BRUSH SWITCHED CONTROL DEVICE, AND PYROTECHNIC DEVICE FOR CUTTING AIRCRAFT CANOPY OR THE LIKE COMPRISING SUCH A CONTROL DEVICE
EP2158599B1 (en) * 2007-05-29 2012-12-05 Norgren GmbH Pressure switch with an integrated diaphragm and switch
CN101976632A (en) * 2010-11-05 2011-02-16 如皋市易之生电子元件有限公司 Diaphragm type micro pressure switch
US8710386B2 (en) * 2011-02-04 2014-04-29 Sensata Technologies, Inc. Fluid pressure responsive electric switch
CN105118732A (en) * 2015-09-02 2015-12-02 上海埃而生电气有限公司 Inclined-plane waterproof structure of pressure switch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378656A (en) * 1966-01-03 1968-04-16 Texas Instruments Inc Adjustment means for electrical switch
US3528455A (en) * 1966-11-16 1970-09-15 Robertshaw Controls Co Condition responsive parameter control means
US3584168A (en) * 1968-12-30 1971-06-08 Texas Instruments Inc Fluid pressure operated diaphragm switch with improved means and method for calibration
US3676620A (en) * 1970-11-18 1972-07-11 Edward E Modes Adjustable pressure responsive transducer
US3793885A (en) * 1972-09-05 1974-02-26 Rosemount Inc Diaphrgam construction for differential pressure transducer
FR2223581B1 (en) * 1973-03-30 1976-09-24 Schlumberger Compteurs

Also Published As

Publication number Publication date
NL175116C (en) 1984-09-17
DE2360609C2 (en) 1983-11-03
IT994403B (en) 1975-10-20
NL7313243A (en) 1974-06-28
DE2360609A1 (en) 1974-06-27
FR2211715A1 (en) 1974-07-19
JPS4996275A (en) 1974-09-12
JPS576771B2 (en) 1982-02-06
NL175116B (en) 1984-04-16
US3816685A (en) 1974-06-11
FR2211715B1 (en) 1976-11-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930919