GB778456A - Combined air puffer air buffer for electric circuit breakers - Google Patents
Combined air puffer air buffer for electric circuit breakersInfo
- Publication number
- GB778456A GB778456A GB24986/54A GB2498654A GB778456A GB 778456 A GB778456 A GB 778456A GB 24986/54 A GB24986/54 A GB 24986/54A GB 2498654 A GB2498654 A GB 2498654A GB 778456 A GB778456 A GB 778456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- piston
- stroke
- cylinder
- buffering
- 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
- 239000000872 buffer Substances 0.000 title abstract 3
- 230000003139 buffering effect Effects 0.000 abstract 3
- 238000007664 blowing Methods 0.000 abstract 1
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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
Landscapes
- Circuit Breakers (AREA)
Abstract
778,456. Air-blast switches. I-T-E. CIRCUIT BREAKER CO. Aug. 27, 1954 [Sept. - 4, 1953], No. 24986/54. Class 38(5) An air puffer blowing an arc from the 'contacts 23, 24 towards the arc-chute comprises a piston 32 connected by a linkage 38, 40 to the operating arm 42 and movable in a cylinder 30. When the breaker opens, the piston 32 moves from left to right to force a stream of air through an orifice 52b, tube 55a and nozzle 57a, that portion of the stroke when piston 32 has passed aperture 52b acting as a buffering stroke to prevent rebound of the contacts. Air intakes 60 are provided in one end wall of the cylinder, and an air bleed clearance with adjustable means 63 is provided round the piston rod 37. In another embodiment (Fig, 4, not shown) an adjustable small air vent and an :air intake are provided so that buffering also occurs at the end of the closing stroke. In Fig. 5, an auxiliary piston 72 is driven to the right by piston 32 to provide the buffering action for the opening stroke, the movement of piston 72 to the left being limited by engagement of a pin 95 on piston rod 73 with end wall 62 of the cylinder. Three circumferentially-aligned orifices 52b are provided for a three-pole breaker. Specification 763,747 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US378613A US2775670A (en) | 1953-09-04 | 1953-09-04 | Combined air puffer air buffer for circuit breakers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB778456A true GB778456A (en) | 1957-07-10 |
Family
ID=23493829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24986/54A Expired GB778456A (en) | 1953-09-04 | 1954-08-27 | Combined air puffer air buffer for electric circuit breakers |
Country Status (2)
Country | Link |
---|---|
US (1) | US2775670A (en) |
GB (1) | GB778456A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3201551A (en) * | 1962-03-23 | 1965-08-17 | Moloney Electric Company | Air-magnetic type circuit interrupter having planar blowout coils and primary conductor mounted puffer means |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2943168A (en) * | 1957-09-16 | 1960-06-28 | Fed Pacific Electric Co | Circuit breakers |
US2985739A (en) * | 1959-06-24 | 1961-05-23 | Fed Pacific Electric Co | Circuit breaker |
US3215805A (en) * | 1962-03-01 | 1965-11-02 | Ite Circuit Breaker Ltd | Unitary lead support molding including an integral chamber for puffer, buffer assembly |
DE1490715A1 (en) * | 1964-12-10 | 1969-09-18 | Sachsenwerk Licht & Kraft Ag | Low-liquid electrical circuit breaker |
NL135712C (en) * | 1969-03-14 | |||
US4093837A (en) * | 1975-07-31 | 1978-06-06 | Westinghouse Electric Corp. | Oil circuit-breaker pump-assembly with improved shunting contact structure |
US7078643B2 (en) * | 2003-12-15 | 2006-07-18 | Rostron Joseph R | Capacitor switch with internal retracting impedance contactor |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1334645A (en) * | 1917-01-13 | 1920-03-23 | Bechoff Ferdinand | Air-break switch |
US2280616A (en) * | 1940-10-22 | 1942-04-21 | Gen Electric | Electric circuit breaker |
US2399485A (en) * | 1942-12-26 | 1946-04-30 | Gen Electric | Electric circuit breaker |
BE472302A (en) * | 1946-04-19 | |||
CH200158A (en) * | 1958-01-20 | 1938-09-30 | Bbc Brown Boveri & Cie | Circuit breaker. |
-
1953
- 1953-09-04 US US378613A patent/US2775670A/en not_active Expired - Lifetime
-
1954
- 1954-08-27 GB GB24986/54A patent/GB778456A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3201551A (en) * | 1962-03-23 | 1965-08-17 | Moloney Electric Company | Air-magnetic type circuit interrupter having planar blowout coils and primary conductor mounted puffer means |
Also Published As
Publication number | Publication date |
---|---|
US2775670A (en) | 1956-12-25 |
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