GB522290A - Improvements in electric circuit breakers - Google Patents
Improvements in electric circuit breakersInfo
- Publication number
- GB522290A GB522290A GB35738/38A GB3573838A GB522290A GB 522290 A GB522290 A GB 522290A GB 35738/38 A GB35738/38 A GB 35738/38A GB 3573838 A GB3573838 A GB 3573838A GB 522290 A GB522290 A GB 522290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pivoted
- electric circuit
- movable contact
- circuit breakers
- spring
- 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
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
Landscapes
- Mechanisms For Operating Contacts (AREA)
- Breakers (AREA)
Abstract
522,290. Switches, partly electromagnetic. BRITISH THOMSON-HOUSTON CO., Ltd., COX, H. E., and GIBSON, A. C. Dec. 7, 1938, No. 35738. [Class 38 (v)] In order to utilize the electrodynamic effect of a current-loop to reinforce the contactpressure, the movable contact is made in two parts 4, 5 of which 4 is formed with the contact surface and is pivoted at 6 to a channel-member 1 pivoted to a support 3. The other part 5 is longer, is pivoted at 8 to the first part, and freely abuts on the hinge-mounting! of member 1. An opening spring or springs 9 acts on the member 5 to .assist the electrodynamic effect in the closed position but in the opening movement, the spring 9 initially causes the movable contact to rub or roll on the fixed contact 7 before producing separation. The invention is also illustrated in its application to the switch of Specification 522,291, Fig. 2 (not shown).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35738/38A GB522290A (en) | 1938-12-07 | 1938-12-07 | Improvements in electric circuit breakers |
US308066A US2275891A (en) | 1938-12-07 | 1939-12-07 | Electric circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35738/38A GB522290A (en) | 1938-12-07 | 1938-12-07 | Improvements in electric circuit breakers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB522290A true GB522290A (en) | 1940-06-13 |
Family
ID=10381028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35738/38A Expired GB522290A (en) | 1938-12-07 | 1938-12-07 | Improvements in electric circuit breakers |
Country Status (2)
Country | Link |
---|---|
US (1) | US2275891A (en) |
GB (1) | GB522290A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2546016A (en) * | 1943-12-11 | 1951-03-20 | Westinghouse Electric Corp | Circuit breaker |
US4255636A (en) * | 1976-12-30 | 1981-03-10 | Westinghouse Electric Corp. | Circuit breaker with current carrying conductor system utilizing eddy current repulsion |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2559216A (en) * | 1945-04-20 | 1951-07-03 | Ite Circuit Breaker Ltd | Circuit maker |
BE472302A (en) * | 1946-04-19 | |||
US2601422A (en) * | 1947-01-07 | 1952-06-24 | Ite Circuit Breaker Ltd | Circuit breaker |
US2601417A (en) * | 1947-01-07 | 1952-06-24 | Ite Circuit Breaker Ltd | Circuit breaker |
US2601482A (en) * | 1947-03-20 | 1952-06-24 | Ite Circuit Breaker Ltd | Circuit breaker-blow open, blow closed contacts |
US2601483A (en) * | 1948-03-16 | 1952-06-24 | Ite Circuit Breaker Ltd | Blow open, blow closed circuit breaker system |
US2580480A (en) * | 1948-04-02 | 1952-01-01 | Allis Chalmers Mfg Co | Farm tractor |
US2601484A (en) * | 1949-11-16 | 1952-06-24 | Ite Circuit Breaker Ltd | Blow open, blow closed circuit breaker |
US2695345A (en) * | 1950-04-19 | 1954-11-23 | Ite Circuit Breaker Ltd | Blow open, blow closed circuit breaker |
US2944129A (en) * | 1957-11-12 | 1960-07-05 | Fed Pacific Electric Co | Circuit breakers |
-
1938
- 1938-12-07 GB GB35738/38A patent/GB522290A/en not_active Expired
-
1939
- 1939-12-07 US US308066A patent/US2275891A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2546016A (en) * | 1943-12-11 | 1951-03-20 | Westinghouse Electric Corp | Circuit breaker |
US4255636A (en) * | 1976-12-30 | 1981-03-10 | Westinghouse Electric Corp. | Circuit breaker with current carrying conductor system utilizing eddy current repulsion |
Also Published As
Publication number | Publication date |
---|---|
US2275891A (en) | 1942-03-10 |
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