GB1153458A - Improvements in or relating to Pressure Responsive Devices - Google Patents
Improvements in or relating to Pressure Responsive DevicesInfo
- 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
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.
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)
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)
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)
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 |
-
1966
- 1966-01-03 US US518404A patent/US3378656A/en not_active Expired - Lifetime
- 1966-11-11 GB GB50683/66A patent/GB1153458A/en not_active Expired
- 1966-12-10 DE DE19661590774 patent/DE1590774B1/en not_active Withdrawn
Cited By (2)
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 |