US4266155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush holder assembly
Assignee: SINGER ACQUISITION HOLDINGS COMPANY 8 STAMFORD FORUM STAMFORD CT 06904 A DE CORP
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Filing: 1979-09-10
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Granted: 1981-05-05
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Expires: 1999-09-10
Abstract
Abstract Brush tube assembly comprising a generally cylindrical brush tube having a pair of longitudinally extending slots and a brush and follower assembly slidable within said bore with said follower comprising a pair of outwardly extending spring legs provided with tabs engaged within said slots, and a compression spring confined behind said follower.
Inventors
- 👤 Paul W. Niemela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:03
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/40; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/148
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
Brush holder assembly comprising a conductive tubular brush tube provided with a pair of slots extending longitudinally on opposite sides thereof; a follower of conductive material slidably contained within said brush tube and having a pair of outwardly extending spring legs each slitted longitudinally rearwardly to provide at least three trailing fingers defining at least a pair of outer fingers conductively engaging said brush tube and a central finger bent to form outwardly extending trailing tabs engaged within said slots; a compression spring confined behind said follower urging said follower towards engagement of said tab against the forward ends of said slots to provide positive stops preventing said follower from moving further outwardly of said brush tube; and a brush carried by said follower extending oppositely from said spring.
Claim 2
Dependent Claim
129 words
Brush holder assembly comprising a conductive tubular brush tube provided with a pair of slots extending longitudinally on opposite sides thereof; a follower of conductive material slidably contained within said brush tube and having a pair of outwardly extending spring legs each slitted longitudinally rearwardly to provide at least three trailing fingers defining at least a pair of outer fingers conductively engaging said brush tube and a central finger bent to form outwardly extending trailing tabs engaged within said slots; a compression spring confined behind said follower urging said follower towards engagement of said tab against the forward ends of said slots to provide positive stops preventing said follower from moving further outwardly of said brush tube; and a brush carried by said follower extending oppositely from said spring.
Claim 3
Dependent Claim
21 words
Brush holder assembly defined in claim 1 wherein said brush tube and said brush are of generally rectangular mating cross-sectional configuration.
Claim 4
Dependent Claim
49 words
Brush holder assembly defined in claim 1 wherein said follower is provided with a generally central aperture, said brush is provided with a generally cylindrical boss extending through said aperture and engaging the end coils of said compression spring whereby said spring, follower and brush comprise a modular sub-assembly.
Claim 5
Dependent Claim
30 words
Brush tube assembly defined in any of claims 1, 2, or 3 wherein said brush tube further comprises an end wall closing the end of said tube opposite said brush.
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) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |