Patent US3784856A successfully refreshed from Google Patents.
US3784856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush holder assembly
Assignee: General Electric Co
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Filing: 1972-07-31
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Granted: 1974-01-08
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Expires: 1992-07-31
Abstract
Abstract The invention is a motor brush holder assembly including a tubular holder member and a brush member freely slidable in the holder with spring means between the two biasing them apart. One of the members, generally the brush, has longitudinal surface groove means part of its length and terminating short of the brush end to form a stop. The other holder member has a fixed projecting means for slidable reception in the groove and the holder is deformable so the brush can be inserted past the stop so the brush is freely slidable in the holder and the stop prevents separation from the holder unless it is deformed. Thus, the entire assembly is preassembled for later use in the motor frame and only the actual functional parts alone form the preassembly.
Inventors
- 👤 C Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:03
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: 12
Claim 1
Independent Claim
125 words
For use with an electric motor frame with means for commutator brushes, an improved brush holder assembly comprising, a tubular brush holder member, a brush member disposed with one end in and freely slidable longitudinally in said holder, spring means between said members biasing them apart, longitudinal surface groove means in one of said members, said groove means terminating short of the end of said member closest said other member to form a stop, fixed projecting means on said other member for slidable reception in said groove means, said holder being deformable for insertion of said brush past the stop to engage the groove and fixed means, whereby said brush freely slides in said holder and said stop prevents separation therefrom without deforming said holder.
Claim 2
Dependent Claim
125 words
For use with an electric motor frame with means for commutator brushes, an improved brush holder assembly comprising, a tubular brush holder member, a brush member disposed with one end in and freely slidable longitudinally in said holder, spring means between said members biasing them apart, longitudinal surface groove means in one of said members, said groove means terminating short of the end of said member closest said other member to form a stop, fixed projecting means on said other member for slidable reception in said groove means, said holder being deformable for insertion of said brush past the stop to engage the groove and fixed means, whereby said brush freely slides in said holder and said stop prevents separation therefrom without deforming said holder.
Claim 3
Dependent Claim
38 words
Apparatus as described in claim 1 wherein said tubular holder has flexible means to at least partially deform the holder and permit insertion of said brush to lock it therein whereupon said holder reverts to its unstressed shape.
Claim 4
Dependent Claim
33 words
Apparatus as described in claim 1 wherein said holder is flexible and formed with a longitudinally extending slot along one side for deforming to permit engagement of said groove means and fixed means.
Claim 5
Dependent Claim
34 words
Apparatus as described in claim 1 wherein said fixed projecting means is disposed on at least two opposite sides of said other member, and said one member has at least two matching grooves means.
Claim 6
Dependent Claim
126 words
For use with an electric motor frame with means for commutator brushes, an improved brush holder assembly comprising, a tubular flexible brush holder, a generally matching brush disposed with one end in and slidable freely longitudinally in the holder, spring means between the holder and brush biasing the brush outwardly, longitudinal surface groove means in said brush, said groove means terminating short of said one end of the brush to form a stop, fixed inwardly projecting means on said holder for slidable reception in said groove means, said flexible holder being deformable to push said brush freely past the stop so as to engage the groove and projecting means, whereby said brush slides in said holder and said stop prevents separation therefrom without deforming said holder.
Claim 7
Dependent Claim
126 words
For use with an electric motor frame with means for commutator brushes, an improved brush holder assembly comprising, a tubular flexible brush holder, a generally matching brush disposed with one end in and slidable freely longitudinally in the holder, spring means between the holder and brush biasing the brush outwardly, longitudinal surface groove means in said brush, said groove means terminating short of said one end of the brush to form a stop, fixed inwardly projecting means on said holder for slidable reception in said groove means, said flexible holder being deformable to push said brush freely past the stop so as to engage the groove and projecting means, whereby said brush slides in said holder and said stop prevents separation therefrom without deforming said holder.
Claim 8
Dependent Claim
31 words
Apparatus as described in claim 5 wherein said holder is formed with a longitudinally extending slot along one side for deforming to permit engagement of said groove means and fixed means.
Claim 9
Dependent Claim
18 words
Apparatus as described in claim 1 wherein said projecting means is an inwardly directing dimple in said holder.
Claim 10
Dependent Claim
16 words
Apparatus as described in claim 1 wherein said projecting means is an inwardly directed cantilevered lance.
Claim 11
Dependent Claim
36 words
Apparatus as described in claim 1 wherein said projecting means is an inwardly directed dimple disposed on at least two opposite sides of the holder, and the brush has at least two matching grooves means therefor.
Claim 12
Dependent Claim
32 words
Apparatus as described in claim 9 wherein said holder has additional deformable projection means extending outwardly therefrom and separate from said dimple to lockingly engage said frame and secure the holder therein.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |