GB643202A - Improvements in and relating to fluid operated electric circuit breakers - Google Patents
Improvements in and relating to fluid operated electric circuit breakersInfo
- Publication number
- GB643202A GB643202A GB29151/45A GB2915145A GB643202A GB 643202 A GB643202 A GB 643202A GB 29151/45 A GB29151/45 A GB 29151/45A GB 2915145 A GB2915145 A GB 2915145A GB 643202 A GB643202 A GB 643202A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pistons
- valve
- shaft
- fluid
- breaker
- 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
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic
Landscapes
- Circuit Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
643,202. Fluid-break switches. BRITISH THOMPSON-HOUSTON CO., Ltd. Nov. 2, 1945, No. 29151. Convention date, Nov. 7, 1944. [Class 38(v)] The movable contact 3 of a fluid-blast circuit-breaker is operated by two pistons 19, 20 working in cylinders 22, 23 and interconnected by a rack 21 engaging a pinion 24 on a shaft 25 to which the contact 3 is connected by a link 43 and an arm 41. Upon operation of a valve 26, fluid, e.g. air, is supplied to cylinder 22 and pistons 19, 20 move to the left, thereby rotating the shaft 25 through about 180 degrees with toggle 41, 43" overset. Simultaneously, a cam 46 on shaft 25 opens a blast valve 14 to cause a blast of fluid across the contacts. The circuit-breaker is closed by opening a valve 28 and passing air into cylinder 23, whereupon the reverse movement of the parts takes place. The movement of the pistons 19, 20, is retarded by pistons 30, 31 coupled by a rack 32 engaging the pinion 24 and working in cylinders communicating by check valves 35, 37, with cylinders 22. 23. In Figs. 3, 4 (not shown), the shaft 25 operates all poles of a threephase circuit-breaker and a manual operating-lever can be put on the shaft 25 and interlocked with a valve which prevents application of the lever unless the valve is opened to exhaust the pressure gas to atmosphere. Specification 544,017, [Group VIII], is referred to. The Specification as open to inspection under Sect. 91 states that the pistons 30 and 31 may be dispensed with and that the pistons 19 and 20 may alternately function as the operating and retarding pistons. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US562296A US2436190A (en) | 1944-11-07 | 1944-11-07 | Electric circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB643202A true GB643202A (en) | 1950-09-15 |
Family
ID=24245674
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29152/45A Expired GB627485A (en) | 1944-11-07 | 1945-11-02 | Improvements in and relating to fluid operated electric circuit breakers |
| GB29151/45A Expired GB643202A (en) | 1944-11-07 | 1945-11-02 | Improvements in and relating to fluid operated electric circuit breakers |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29152/45A Expired GB627485A (en) | 1944-11-07 | 1945-11-02 | Improvements in and relating to fluid operated electric circuit breakers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2436190A (en) |
| GB (2) | GB627485A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2595486A (en) * | 1948-03-06 | 1952-05-06 | Skoda Works Nat Corp | Servomotor and mechanism for limiting its piston movements at variably predetermined positions |
| DE1008808B (en) * | 1953-09-22 | 1957-05-23 | Voigt & Haeffner Ag | Compressed air drive for electrical switches |
| US2843706A (en) * | 1955-09-23 | 1958-07-15 | Gen Electric | Electric circuit breaker |
| US3060294A (en) * | 1957-10-30 | 1962-10-23 | Westinghouse Electric Corp | Circuit interrupter |
| US3179015A (en) * | 1963-02-11 | 1965-04-20 | Ingersoll Rand Co | Control for rock drill mounting |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1756307A (en) * | 1924-08-16 | 1930-04-29 | Nat Pneumatic Co | Pneumatic motor |
| US2363283A (en) * | 1942-02-18 | 1944-11-21 | Westinghouse Electric & Mfg Co | Circuit interrupter |
| BE483729A (en) * | 1942-07-29 |
-
1944
- 1944-11-07 US US562296A patent/US2436190A/en not_active Expired - Lifetime
-
1945
- 1945-11-02 GB GB29152/45A patent/GB627485A/en not_active Expired
- 1945-11-02 GB GB29151/45A patent/GB643202A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2436190A (en) | 1948-02-17 |
| GB627485A (en) | 1949-08-10 |
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