Patent US4396850A successfully refreshed from Google Patents.
US4396850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush board assembly for dynamoelectric machine with flat end commutator
Assignee: Singer Co
•
Filing: 1982-01-12
•
Granted: 1983-08-02
•
Expires: 2002-01-12
Abstract
Abstract A brush board for a dynamoelectric machine is formed with resilient arms which are an integral part of the board and have commutator engageable brushes affixed at the free ends thereof. The board carries printed circuitry which extends to the free end of the arms and connects with the brushes.
Inventors
- 👤 John A. Herr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:29
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/145; H01; H01R; H01R39/00; H01R39/02; H01R39/04; H01R39/06; Y; Y10; Y10S; Y10S310/00; Y10S310/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
110 words
A brush board assembly for a dynamoelectric machine comprising a mounting board of a resilient non-conductive material in the form of a ring including as an integral part of the board, a pair of cresent shaped flexible arms which are separate from an outer annular portion of the board by arcuate gaps and which have diametrically opposite free end portions that are movable out of the plane of the outer annular portion of the board; a commutator engageable brush on each end portion of the arms; and printed circuitry on the outer annulr portion of the board extending therefrom along each of the arms to connect with the brush thereon.
Claim 2
Dependent Claim
110 words
A brush board assembly for a dynamoelectric machine comprising a mounting board of a resilient non-conductive material in the form of a ring including as an integral part of the board, a pair of cresent shaped flexible arms which are separate from an outer annular portion of the board by arcuate gaps and which have diametrically opposite free end portions that are movable out of the plane of the outer annular portion of the board; a commutator engageable brush on each end portion of the arms; and printed circuitry on the outer annulr portion of the board extending therefrom along each of the arms to connect with the brush thereon.
Claim 3
Dependent Claim
28 words
A brush board assembly according to claim 1 wherein the brushes are cemented to the printed portions of the circuitry on said arms with a conductive epoxy cement.
References Cited (Backward Citations)
US2465224A
Cited
US3271601A
Cited
US3222862A
Cited
US3244917A
Cited
US3453513A
Cited
US3739205A
Cited
US3791684A
Cited
US3891876A
Cited
US3924147A
Cited
US4063123A
Cited
US4049984A
Cited
US4119875A
Cited
DE2655249A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |