Patent US3717739A successfully refreshed from Google Patents.
US3717739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact arrangement for vacuum switches
Assignee: Siemens AG
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Filing: 1972-04-04
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Granted: 1973-02-20
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Expires: 1992-04-04
Abstract
Abstract A contact arrangement comprises two inner contacts which can be moved relatively to each other, and two immovable outer contacts. The inner contacts comprise a contact carrier and a contact piece, and the outer contact comprises a contact carrier and a ring-shaped high-current piece. The high-current contact pieces surround the contact pieces of the inner contacts and partially surround the contact carriers of the inner contacts and are spaced at a distance therefrom. The inner contact pieces are arranged eccentrically with respect to the longitudinal axis of the contact carrier at the latter, in such a way that a narrow gap will exist on one of the sides of the passage from the highcurrent contact piece to the contact carrier, between the inner contact pieces to the contact carrier, between the inner contact pieces and the high-current contact pieces, and the position of the inner contact can be firmly adjusted within an angular range of 0* through 30*, with respect to the passage. The high-current contact pieces are furthermore provided with a slot on the other side of the junction with the contact carrier. On one hand, the slots of the high-current contact pieces and, on the other hand, the inner contact pieces are arranged symmetrically opposite each other.
Inventors
- 👤 W Kuhl
- 👤 L Klug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:38
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/664; H01H33/02; H01H33/04; H01H33/12; H01H33/6644
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
208 words
A contact arrangement in a vacuum switch of the type wherein two inner contact pieces which are movable relative to each other are surrounded by and associated with respective immovable ring-shaped high current contact pieces and the contact pieces are carried by respective contact carriers having longitudinal axes and arranged facing each other, the associated inner and outer contact pieces being electrically connected together via their respective contact carriers and connectIon pieces, the improvement comprising means defining an eccentric projection of said contact carriers for said inner contact pieces and said inner contact pieces disposed and carried on the eccentric projections their respective contact carriers and thereby disposed eccentrically with respect to the longitudinal axes of said contact carriers to provide a narrow gap between each of said inner contact pieces and the associated ring-shaped high-current contact pieces and between the ring-shaped high-current contact pieces and the respective contact carrier of said inner contact pieces, said inner contact pieces being mounted for arcuate movement through an angular range of 0*-30* with respect to said gap, and each of said ring-shaped high current contact pieces including means defining a slot opposite the respective gap, said slots arranged opposite each other and said inner contact pieces arranged opposite each other.
Claim 2
Dependent Claim
208 words
A contact arrangement in a vacuum switch of the type wherein two inner contact pieces which are movable relative to each other are surrounded by and associated with respective immovable ring-shaped high current contact pieces and the contact pieces are carried by respective contact carriers having longitudinal axes and arranged facing each other, the associated inner and outer contact pieces being electrically connected together via their respective contact carriers and connectIon pieces, the improvement comprising means defining an eccentric projection of said contact carriers for said inner contact pieces and said inner contact pieces disposed and carried on the eccentric projections their respective contact carriers and thereby disposed eccentrically with respect to the longitudinal axes of said contact carriers to provide a narrow gap between each of said inner contact pieces and the associated ring-shaped high-current contact pieces and between the ring-shaped high-current contact pieces and the respective contact carrier of said inner contact pieces, said inner contact pieces being mounted for arcuate movement through an angular range of 0*-30* with respect to said gap, and each of said ring-shaped high current contact pieces including means defining a slot opposite the respective gap, said slots arranged opposite each other and said inner contact pieces arranged opposite each other.
Claim 3
Dependent Claim
208 words
A contact arrangement in a vacuum switch of the type wherein two inner contact pieces which are movable relative to each other are surrounded by and associated with respective immovable ringshaped high current contact pieces and the contact pieces are carried by respective contact carriers having longitudinal axes and arranged facing each other, the associated inner and outer contact pieces being electrically connected together via their respective contact carriers and connectIon pieces, the improvement comprising means defining an eccentric projection of said contact carriers for said inner contact pieces and said inner contact pieces disposed and carried on the eccentric projections their respective contact carriers and thereby disposed eccentrically with respect to the longitudinal axes of said contact carriers to provide a narrow gap between each of said inner contact pieces and the associated ring-shaped highcurrent contact pieces and between the ring-shaped high-current contact pieces and the respective contact carrier of said inner contact pieces, said inner contact pieces being mounted for arcuate movement through an angular range of 0*-30* with respect to said gap, and each of said ring-shaped high current contact pieces including means defining a slot opposite the respective gap, said slots arranged opposite each other and said inner contact pieces arranged opposite each other.
Claim 4
Dependent Claim
208 words
A contact arrangement in a vacuum switch of the type wherein two inner contact pieces which are movable relative to each other are surrounded by and associated with respective immovable ringshaped high current contact pieces and the contact pieces are carried by respective contact carriers having longitudinal axes and arranged facing each other, the associated inner and outer contact pieces being electrically connected together via their respective contact carriers and connectIon pieces, the improvement comprising means defining an eccentric projection of said contact carriers for said inner contact pieces and said inner contact pieces disposed and carried on the eccentric projections their respective contact carriers and thereby disposed eccentrically with respect to the longitudinal axes of said contact carriers to provide a narrow gap between each of said inner contact pieces and the associated ring-shaped highcurrent contact pieces and between the ring-shaped high-current contact pieces and the respective contact carrier of said inner contact pieces, said inner contact pieces being mounted for arcuate movement through an angular range of 0*-30* with respect to said gap, and each of said ring-shaped high current contact pieces including means defining a slot opposite the respective gap, said slots arranged opposite each other and said inner contact pieces arranged opposite each other.
Claim 5
Dependent Claim
41 words
A contact arrangement according to claim 1 wherein said ring-shaped high current contact pieces include frontal surfaces, and said slots are perpendicular to the frontal surfaces and extend to their respective contact carriers in the area of the respective gaps. piece.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |