Patent US3971460A successfully refreshed from Google Patents.
US3971460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electrically connecting two conductors between two rotatable elements
Assignee: Government of France
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Filing: 1975-02-27
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Granted: 1976-07-27
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Expires: 1995-02-27
Abstract
Abstract Electrical connection apparatus for two conductors respectively connected to an electrical supply source and to a utilization device, the conductors being respectively secured to first and second elements which are relatively rotatable with respect to one another through the intermediary of a roller bearing having a cage constituted by first and second parts respectively secured to the first and second elements and balls inserted in the cage. First and second conductive contacts are fixedly secured to the first element and are in rubbing contact respectively with a first annular grounding track and a second annular conductive track. The first and second tracks are fixedly secured to the second part of the cage, the grounding track being formed by a thin layer of low electrical resistance deposited in a peripheral groove in the second part of the cage.
Inventors
- 👤 Guillaume Antonin Gay-Chatain
- 👤 Paul Rene Marius Montjallard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:59
CPC Classifications
H; H01; H01R; H01R39/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
123 words
Electrical connection apparatus for two conductors respectively connected to an electrical supply source and to a utilization device, the conductors being respectively secured to first and second elements which are relatively rotatable with respect to one another through the intermediary of a roller bearing having a cage constituted by first and second parts respectively secured to said first and second elements and balls inserted in said cage, said apparatus comprising first and second conductive contacts fixedly secured to said first element, an annular grounding track on which said first contact is in sliding contact, an annular conductive track on which said second contact is in sliding contact, said conductive track and said grounding track being secured to said second part of the cage.
Claim 2
Dependent Claim
123 words
Electrical connection apparatus for two conductors respectively connected to an electrical supply source and to a utilization device, the conductors being respectively secured to first and second elements which are relatively rotatable with respect to one another through the intermediary of a roller bearing having a cage constituted by first and second parts respectively secured to said first and second elements and balls inserted in said cage, said apparatus comprising first and second conductive contacts fixedly secured to said first element, an annular grounding track on which said first contact is in sliding contact, an annular conductive track on which said second contact is in sliding contact, said conductive track and said grounding track being secured to said second part of the cage.
Claim 3
Dependent Claim
21 words
Apparatus as claimed in claim 1 wherein said grounding track is constituted by a thin layer of a low resistance material.
Claim 4
Dependent Claim
26 words
Apparatus as claimed in claim 2 wherein said second part of the cage is provided with a peripheral groove within which said thin layer is disposed.
Claim 5
Dependent Claim
20 words
Apparatus as claimed in claim 1 wherein said conductive track is fixedly secured in said second part of the cage.
Claim 6
Dependent Claim
47 words
Apparatus as claimed in claim 4 wherein said conductive track is constituted by a ring of low resistance material disposed in said second part of the cage, an electrically insulative material being interposed between said ring of low resistance material and said second part of the cage.
Claim 7
Dependent Claim
18 words
Apparatus as claimed in claim 1 comprising insulative support means supporting said conductive contacts from said first element.
Claim 8
Dependent Claim
16 words
Apparatus as claimed in claim 6 wherein said insulative support means comprises a plastic support member.
Claim 9
Dependent Claim
29 words
Apparatus as claimed in claim 1 wherein said first element is a rotatable turret and said second element is an armored vehicle on which said turret is rotatably mounted.
Claim 10
Dependent Claim
29 words
Apparatus as claimed in claim 1 comprising means secured to said second element establishing electrical connection between said conductive track and the conductor connected to the electrical supply source.
Claim 11
Dependent Claim
48 words
Apparatus as claimed in claim 9 wherein the conductor connected to the utilization device is secured with said first element and is electrically connected to said second conductive contact, a grounding conductor being electrically connected to said first contact and thereby to said grounding track and electrical ground.
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) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |