GB987935A - Improvements in magnetically actuated electric switches - Google Patents
Improvements in magnetically actuated electric switchesInfo
- Publication number
- GB987935A GB987935A GB144462A GB144462A GB987935A GB 987935 A GB987935 A GB 987935A GB 144462 A GB144462 A GB 144462A GB 144462 A GB144462 A GB 144462A GB 987935 A GB987935 A GB 987935A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- actuated
- magnetic mass
- switches
- contact device
- 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
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/64—Contacts
- H01H37/66—Magnetic reinforcement of contact pressure; Magnet causing snap action
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
- H01H51/287—Details of the shape of the contact springs
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
- Manufacture Of Switches (AREA)
Abstract
987,935. Magnetic switches; thermal switches; fluid actuation of switches. ROBERTSHAWFULTON CONTROLS CO. Jan. 15, 1962, No. 1444/62. Heading H2B. A sealed contact device is actuated upon the engagement of a movable magnet with a magnetic mass whose position relative to the armature of the contact device is adjustable. The movable magnet 5 may be actuated by a bi-metal strip 6, or a bellows or a Bourdon tube (not shown) and it co-operates with the magnetic mass 7 which is mounted on an adjusting screw 8. The sealed contact device has a quartz or glass tube 9 filled with hydrogen, nitrogen, or neon. The armature 2 of the device is mounted on a resilient contact blade 4 and co-operates with fixed contacts 21, 27 carried on insulated frames 16, 17 respectively. The sides of these frames, together with a spring blade 20 engage the inside wall of the tube thereby supporting the contact assembly. The tube is secured to a bracket 10 by an adhesive. In Fig. 4 (not shown) two single pole contact devices, each with an associated magnetic mass, are actuated by a permanent magnet moving between them. In Fig. 5 (not shown) the magnet 5 normally engages the magnetic mass 7 and only actuates the contact device when released.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US54620A US3068333A (en) | 1960-09-08 | 1960-09-08 | Control device |
GB144462A GB987935A (en) | 1962-01-15 | 1962-01-15 | Improvements in magnetically actuated electric switches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB144462A GB987935A (en) | 1962-01-15 | 1962-01-15 | Improvements in magnetically actuated electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB987935A true GB987935A (en) | 1965-03-31 |
Family
ID=9722114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB144462A Expired GB987935A (en) | 1960-09-08 | 1962-01-15 | Improvements in magnetically actuated electric switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB987935A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3656082A (en) * | 1970-09-28 | 1972-04-11 | Itt | Positioning device |
GB2208565B (en) * | 1987-08-12 | 1992-01-15 | Bristol Myers Co | Electrical switch assembly and appliances containing same |
-
1962
- 1962-01-15 GB GB144462A patent/GB987935A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3656082A (en) * | 1970-09-28 | 1972-04-11 | Itt | Positioning device |
GB2208565B (en) * | 1987-08-12 | 1992-01-15 | Bristol Myers Co | Electrical switch assembly and appliances containing same |
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