GB544871A - Improvements in and relating to gas blast circuit breakers - Google Patents
Improvements in and relating to gas blast circuit breakersInfo
- Publication number
- GB544871A GB544871A GB8965/41A GB896541A GB544871A GB 544871 A GB544871 A GB 544871A GB 8965/41 A GB8965/41 A GB 8965/41A GB 896541 A GB896541 A GB 896541A GB 544871 A GB544871 A GB 544871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- space
- flame
- blast
- contact
- gas
- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
Abstract
544,871. Gas-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. July 16, 1941, No. 8965. Convention date, July 16, 1940. [Class 38 (v) ] In a gas-blast switch, for example, as shown in Specification 544,017, prevention of the emission of flame in the wake of the movable contact 2 as it is withdrawn from the contactfingers 1<SP>1</SP>, is achieved by the creation of a space 11 above the hole 6' in the barrier' 6, which space is in direct communication at 10 with the blast-conduit 5, whereby a separate stream of air traverses the space 11 into the chute-passage 12 and either acts as a barrier to flame or drives the flame into the chute. The wall 14 is extended in the direction of contact-separation to provide the equivalent of a contact-pause. In a modification, Fig. 2 (not shown), the space 11 has no outlet passage 12 for the air from conduit 5, so that a higher pressure prevails in that space than in space 13 and prevents the entry of flame into the former space.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US345755A US2290708A (en) | 1940-07-16 | 1940-07-16 | Gas blast circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB544871A true GB544871A (en) | 1942-04-30 |
Family
ID=23356353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8965/41A Expired GB544871A (en) | 1940-07-16 | 1941-07-16 | Improvements in and relating to gas blast circuit breakers |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2290708A (en) |
| DE (1) | DE735831C (en) |
| GB (1) | GB544871A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2486127A (en) * | 1944-06-26 | 1949-10-25 | Gen Electric | Air blast electric circuit breaker |
| BE479338A (en) * | 1947-01-04 | |||
| US2604563A (en) * | 1949-10-03 | 1952-07-22 | Allis Chalmers Mfg Co | Circuit breaker employing high and low intensity gas blast |
| US2604564A (en) * | 1949-10-03 | 1952-07-22 | Allis Chalmers Mfg Co | Circuit breaker employing high and low intensity gas blast |
| US2604565A (en) * | 1949-11-10 | 1952-07-22 | Allis Chalmers Mfg Co | Circuit breaker employing a pair of arc chutes |
-
1940
- 1940-07-16 US US345755A patent/US2290708A/en not_active Expired - Lifetime
-
1941
- 1941-07-02 DE DEL104763D patent/DE735831C/en not_active Expired
- 1941-07-16 GB GB8965/41A patent/GB544871A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE735831C (en) | 1943-05-27 |
| US2290708A (en) | 1942-07-21 |
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