GB1253759A - A fluid pressure actuated switch - Google Patents
A fluid pressure actuated switchInfo
- Publication number
- GB1253759A GB1253759A GB42558/69A GB4255869A GB1253759A GB 1253759 A GB1253759 A GB 1253759A GB 42558/69 A GB42558/69 A GB 42558/69A GB 4255869 A GB4255869 A GB 4255869A GB 1253759 A GB1253759 A GB 1253759A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flux
- piston
- magnetic
- permanent magnet
- divert
- 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
- 239000012530 fluid Substances 0.000 title 1
- 230000004907 flux Effects 0.000 abstract 7
- 235000014676 Phragmites communis Nutrition 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/226—Devices for monitoring or checking brake systems; Signal devices using devices being responsive to the difference between the fluid pressions in conduits of multiple braking systems
-
- 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
- H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/0006—Permanent magnet actuating reed switches
- H01H36/0013—Permanent magnet actuating reed switches characterised by the co-operation between reed switch and permanent magnet; Magnetic circuits
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Measuring Fluid Pressure (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Push-Button Switches (AREA)
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
1,253,759. Magnetic switches. BENDIX CORP. 27 Aug., 1969 [24 Sept., 1968], No. 42558/69. Heading H1N. A double-acting piston is arranged to be moved on pressure differential to divert magnetic flux to a magnetic contact device and provide sufficient flux on restoration to its initial position to hold the contacts closed. As applied to a vehicle brake pressure unbalance alarm system the pressure supplies are connected to chambers 66, 68 on opposite sides of a magnetic piston 20 in a cylinder 18. Screws 70, 72 in end housings 50, 52 are adjustable to move pistons 22, 24 to set the compression of springs 26, 28 which bear on opposite sides of the piston 20 to maintain it in a normal position in which its annuli 78, 80 bridge flux guides 38, 40 to divert flux from a permanent magnet 34 which closes contacts 42, 44 of a reed contact unit 36 when the piston is moved from its flux diverting position. Alternatively the piston may include a permanent magnet and be arranged to bridge flux guides when displaced by pressure differential (Fig. 2, not shown) or be arranged to complete the flux path of a fixed permanent magnet when in its central position (Fig. 3, not shown). Reference has been directed by the Comptroller to Specification 1,103,118.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76200968A | 1968-09-24 | 1968-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1253759A true GB1253759A (en) | 1971-11-17 |
Family
ID=25063882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB42558/69A Expired GB1253759A (en) | 1968-09-24 | 1969-08-27 | A fluid pressure actuated switch |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3549837A (en) |
| JP (1) | JPS553775B1 (en) |
| DE (1) | DE1946650A1 (en) |
| FR (1) | FR2018726A1 (en) |
| GB (1) | GB1253759A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340669B2 (en) * | 1973-06-21 | 1978-10-28 | ||
| US3924086A (en) * | 1974-03-27 | 1975-12-02 | Robertshaw Controls Co | Pressure responsive magnetic switch |
| US4213021A (en) * | 1979-01-19 | 1980-07-15 | Aeroquip Corporation | Indicating check valve |
| DE2928802C2 (en) * | 1979-07-17 | 1985-05-30 | Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover | Pressure medium operated differential pressure switch |
| DE3412821A1 (en) * | 1984-04-05 | 1985-10-17 | Manfred 2000 Hamburg Berweger | Differential-pressure switch for two-component injection systems |
| US4604866A (en) * | 1984-09-06 | 1986-08-12 | Allied Corporation | Master cylinder |
| US6223769B1 (en) | 1998-09-28 | 2001-05-01 | S. H. Leggitt Company | Gas pressure sensor and indicator apparatus for recreational vehicles and the like |
| JP6373493B2 (en) * | 2015-05-29 | 2018-08-15 | 日立オートモティブシステムズ株式会社 | Electric booster and stroke detector |
| EP3670706B1 (en) | 2018-12-18 | 2024-02-21 | Covestro Deutschland AG | Method for the membrane electrolysis of alkali chloride solutions with gas diffusion electrode |
-
1968
- 1968-09-24 US US762009A patent/US3549837A/en not_active Expired - Lifetime
-
1969
- 1969-08-27 GB GB42558/69A patent/GB1253759A/en not_active Expired
- 1969-09-15 DE DE19691946650 patent/DE1946650A1/en active Pending
- 1969-09-17 FR FR6931549A patent/FR2018726A1/fr not_active Withdrawn
- 1969-09-24 JP JP6975329A patent/JPS553775B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1946650A1 (en) | 1970-04-02 |
| US3549837A (en) | 1970-12-22 |
| FR2018726A1 (en) | 1970-06-26 |
| JPS553775B1 (en) | 1980-01-26 |
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