US3863085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush for electric machines
Assignee: Individual
•
Filing: 1972-11-08
•
Granted: 1975-01-28
•
Expires: 1992-11-08
Abstract
Abstract Brush for electric machines, comprising a brush body made of carbon, current-carrying fittings, and a spring insulated from the brush body and serving to press the latter against the fittings. The spring may be a flat or a spiral spring; in the latter case a separate pressure element may be interposed.
Inventors
- 👤 Aron Beniaminovich Shapiro
- 👤 Vladimir Pavlovich Chernyavsky
- 👤 Ibragim Akhmedovich Kadi-Ogly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:15
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A brush for electric machines to provide electric contact with a moving part of a machine, comprising a brush body made of carbon and having an open through slot; current-carrying fittings on said body and having therein a threaded opening; and a spiral tension spring located in said slot, one end of said spring being fixed in said threaded opening, while the other end of said spring is applied onto a pressure element; said spring and said pressure element being inSulated from said brush body, the latter being held tightly between said fittings and said pressure element.
Claim 2
Dependent Claim
97 words
A brush for electric machines to provide electric contact with a moving part of a machine, comprising a brush body made of carbon and having an open through slot; current-carrying fittings on said body and having therein a threaded opening; and a spiral tension spring located in said slot, one end of said spring being fixed in said threaded opening, while the other end of said spring is applied onto a pressure element; said spring and said pressure element being inSulated from said brush body, the latter being held tightly between said fittings and said pressure element.
Claim 3
Dependent Claim
61 words
A brush for electric machines to provide electric contact with a moving part of a machine, comprising a brush body made of carbon; current-carrying fittings; and a flat spring, one end of the latter being attached to said fittings; and spring being insulated from said brush body, the latter being held between said fittings and the free end of said spring.
Claim 4
Dependent Claim
61 words
A brush for electric machines to provide electric contact with a moving part of a machine, comprising a brush body made of carbon; current-carrying fittings; and a flat spring, one end of the latter being attached to said fittings; and spring being insulated from said brush body, the latter being held between said fittings and the free end of said spring.
References Cited (Backward Citations)
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Cited
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US1756692A
Cited
US2475276A
Cited
US2813208A
Cited
US3075110A
Cited
US3482135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |