GB720980A - Improvements in electric switches operable by liquid pressure - Google Patents
Improvements in electric switches operable by liquid pressureInfo
- Publication number
- GB720980A GB720980A GB15285/53A GB1528553A GB720980A GB 720980 A GB720980 A GB 720980A GB 15285/53 A GB15285/53 A GB 15285/53A GB 1528553 A GB1528553 A GB 1528553A GB 720980 A GB720980 A GB 720980A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- diaphragm
- casing
- switch
- pressure
- 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
- 239000007788 liquid Substances 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 2
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
720,980. Actuation of switches. GENERAL MOTORS CORPORATION. June 3, 1953 [June 19, 1952], No. 15285/53. Class 38 (5) A switch actuated by fluid pressure comprises a casing 28, 33 divided into two chambers by a diaphragm 29 to one side of which fluid is admitted through a pipe 25. A fixed annular contact 30 is clamped between the diaphragm and casing, and a movable cupshaped contact 40 is pressed into engagement with the contact 30 by a spring 41 when a low pressure exists in the chamber 27. Electrical connection is made between the contact 40 and a terminal 22 by the spring 41 and a metal washer 45. When the pressure in the chamber 27 increases sufficiently it moves the diaphragm and opens the contacts 40, 30. In order to limit the movement of the diaphragm the contact 40 is formed with a shoulder 44 which engages the rim of a fixed insulating cup 48 when the contacts are opened. A second insulating cup 47 is connected to the cup 48 by ribs and both cups are provided with openings 61, 62 to ensure atmospheric pressure in the casing 33. The switch may be used to indicate high and low pressure in a lubricating oil system connected to the pipe 25, the circuit through the switch comprising a battery 60 and lamp 21.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US294437A US2698887A (en) | 1952-06-19 | 1952-06-19 | Oil pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB720980A true GB720980A (en) | 1954-12-29 |
Family
ID=23133415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15285/53A Expired GB720980A (en) | 1952-06-19 | 1953-06-03 | Improvements in electric switches operable by liquid pressure |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2698887A (en) |
| DE (1) | DE1002844B (en) |
| GB (1) | GB720980A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2744984A (en) * | 1953-08-12 | 1956-05-08 | Cutler Hammer Inc | Sealing means for lever operated electric switches |
| US2783324A (en) * | 1954-08-03 | 1957-02-26 | Gen Motors Corp | Fluid pressure switch |
| US2827526A (en) * | 1954-12-10 | 1958-03-18 | Gen Motors Corp | Pressure actuated switch |
| DE971092C (en) * | 1955-02-18 | 1958-12-11 | Scheuffele & Co Robert | Electrical switching device, especially for systems for monitoring the oil pressure of internal combustion engines |
| US2816189A (en) * | 1955-03-16 | 1957-12-10 | Gen Motors Corp | Pressure actuated switch |
| US3022396A (en) * | 1959-09-10 | 1962-02-20 | Packer Morton | Readily adjustable pressure switch |
| US3090848A (en) * | 1959-11-06 | 1963-05-21 | Paragon Products Corp | Fluid pressure actuated switch |
| GB1336431A (en) * | 1970-07-18 | 1973-11-07 | Lucas Industries Ltd | Electrical switches |
| DE3225978C2 (en) * | 1982-07-10 | 1986-08-28 | Robert Bosch Gmbh, 7000 Stuttgart | Pressure switch |
| JPS5977747U (en) * | 1982-11-17 | 1984-05-25 | 株式会社東海理化電機製作所 | pressure switch |
| GB8523923D0 (en) * | 1985-09-27 | 1985-10-30 | Bestquint Ltd | Remotely operable arrangement |
| US6608266B2 (en) * | 2001-12-18 | 2003-08-19 | Eaton Corporation | Pressure switch with annular electrodes method of making same |
| US6612223B2 (en) * | 2002-01-31 | 2003-09-02 | Bfs Diversified Products, Llc | Pneumatic actuator |
| US6635836B1 (en) | 2002-04-18 | 2003-10-21 | Oil-Rite Corporation | Housing contained fluid flow switch and indicator |
| US7717856B2 (en) * | 2005-05-02 | 2010-05-18 | Qdevice Medical Inc. | Non-toxic liquid column sphygmomanometer |
| KR102417368B1 (en) * | 2017-12-19 | 2022-07-05 | 현대자동차 주식회사 | Oil pressure switch, apparatus for diagnozing piston cooling oil jet, and method using the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE369058A (en) * | 1929-05-27 | |||
| US1925762A (en) * | 1931-12-09 | 1933-09-05 | Bendix Westinghouse Automotive | Switch |
| US1951245A (en) * | 1932-06-17 | 1934-03-13 | Moto Meter Gauge & Equip Corp | Pressure actuated switch |
| US2248047A (en) * | 1939-10-12 | 1941-07-08 | Addy Roy | Tire signal and system |
| US2445959A (en) * | 1945-08-18 | 1948-07-27 | Harvey R Luper | Tire pressure switch |
| GB608669A (en) * | 1945-12-19 | 1948-09-20 | Speed Marketing Company Sussex | Improvements in fluid pressure operated switches |
-
1952
- 1952-06-19 US US294437A patent/US2698887A/en not_active Expired - Lifetime
-
1953
- 1953-06-03 GB GB15285/53A patent/GB720980A/en not_active Expired
- 1953-06-11 DE DEG11952A patent/DE1002844B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US2698887A (en) | 1955-01-04 |
| DE1002844B (en) | 1957-02-21 |
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