Patent US3694597A successfully refreshed from Google Patents.
US3694597A
Expired / Lapsed
US
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Quick-acting electric switch
Assignee: Landis and Gyr AG
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Filing: 1971-04-27
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Granted: 1972-09-26
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Expires: 1991-04-27
Abstract
Abstract A quick-acting electric switch with a rocker which is clamped to the switch case at one end and has a contact attached to the free end thereof, which free contact moves between two fixed contacts. The rocker arm is driven by means of a ram and a compression spring in a manner so that the rocker arm accelerates before contact is broken between the free and fixed contacts.
Inventors
- 👤 Hans Michael Rosch
- 👤 Ernst Limberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:02
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/26; H01H13/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
A quick-acting electric switch including: a switching rocker formed by an external frame which is fixed at one end and which carries a contact at the free end thereof; a pair of fixed contacts disposed on either side of said rocker contact such that one of said fixed contacts is normally touching said rocker contact; a transmission arm forming a part of said rocker and having one end fixed to said rocker; a working spring resiliently connecting the free end of said transmission arm to the body of said rocker; a ram acting on said external frame of said rocker at a distance a from said fixed end of said rocker and a compression spring acting on said external frame at the opposite side from said ram, this distance a being such that the force of the drive upon said transmission arm and through said external frame upon the contact of the rocker is transmitted in such a manner that the internal system comprising said transmission arm and said working spring are set in motion before the force between said rocker contact and said fixed contact is zero.
Claim 2
Dependent Claim
188 words
A quick-acting electric switch including: a switching rocker formed by an external frame which is fixed at one end and which carries a contact at the free end thereof; a pair of fixed contacts disposed on either side of said rocker contact such that one of said fixed contacts is normally touching said rocker contact; a transmission arm forming a part of said rocker and having one end fixed to said rocker; a working spring resiliently connecting the free end of said transmission arm to the body of said rocker; a ram acting on said external frame of said rocker at a distance a from said fixed end of said rocker and a compression spring acting on said external frame at the opposite side from said ram, this distance a being such that the force of the drive upon said transmission arm and through said external frame upon the contact of the rocker is transmitted in such a manner that the internal system comprising said transmission arm and said working spring are set in motion before the force between said rocker contact and said fixed contact is zero.
Claim 3
Dependent Claim
27 words
A quick-acting switch according to claim 1 wherein said rocker contact is located equidistant said fixed contacts in the absence of said ram and said compression spring.
Claim 4
Dependent Claim
45 words
A quick-acting switch according to claim 1 wherein the points at which said ram and said compression spring act upon said rocker are displaced from each other, the compression spring point lying between the ram point and the point where said external frame is attached.
References Cited (Backward Citations)
CA712692A
Cited
US2330506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |