Patent US3752945A successfully refreshed from Google Patents.
US3752945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical alternating contact switch
Assignee: Individual
•
Filing: 1972-06-14
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Granted: 1973-08-14
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Expires: 1992-06-14
Abstract
Abstract An electrical alternating contact switch is designed to produce switching impulses by inclining and rotating the switch and for this purpose is made up of an electrically conductive ring with a pyramidally tapered inner surface, a cover plate on the ring closing the larger end of this taper and having conductive and non-conductive parts, and a rolling body which can be released by tilting the switch so as to roll between the surfaces presented by the ring and the cover plate.
Inventors
- 👤 D Achterberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:18
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/02; Y; Y10; Y10S; Y10S200/00; Y10S200/29
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
An improved electrical alternating contact switch in which switching impulses are produced in response to positional variation thereof comprising an electrically conductive ring which defines a shaped inner rolling surface, a cover plate mounted on said ring and providing a second rolling surface which is partially electrically conductive and partially nonconductive, and a rolling body of electrically conductive material movable over said inner rolling surface and between the latter and said second rolling surface, said ring being made up internally of symmetrically arranged flared sections.
Claim 2
Dependent Claim
85 words
An improved electrical alternating contact switch in which switching impulses are produced in response to positional variation thereof comprising an electrically conductive ring which defines a shaped inner rolling surface, a cover plate mounted on said ring and providing a second rolling surface which is partially electrically conductive and partially nonconductive, and a rolling body of electrically conductive material movable over said inner rolling surface and between the latter and said second rolling surface, said ring being made up internally of symmetrically arranged flared sections.
Claim 3
Dependent Claim
19 words
An alternating contact switch according to claim 1, in which the flared sections are inclined towards said cover plate.
Claim 4
Dependent Claim
89 words
An improved electrical alternating contact switch in which switching impulses are produced in response to positional variation thereof comprising an electrically conductive ring which defines a shaped inner rolling surface, a cover plate mounted on said ring and providing a second rolling surface which is partially electrically conductive and partially non-conductive, and a rolling body of electrically conductive material movable over said inner rolling surface and between the latter and said second rolling surface, said cover plate being flat and having electrically conductive strips arranged thereon in star fashion.
Claim 5
Dependent Claim
89 words
An improved electrical alternating contact switch in which switching impulses are produced in response to positional variation thereof comprising an electrically conductive ring which defines a shaped inner rolling surface, a cover plate mounted on said ring and providing a second rolling surface which is partially electrically conductive and partially non-conductive, and a rolling body of electrically conductive material movable over said inner rolling surface and between the latter and said second rolling surface, said cover plate being flat and having electrically conductive strips arranged thereon in star fashion.
References Cited (Backward Citations)
US3534194A
Cited
US3629748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |