US3780407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal working brush assembly
Assignee: Individual
•
Filing: 1971-12-02
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Granted: 1973-12-25
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Expires: 1991-12-02
Abstract
Abstract A brush having a circular array of wire strands located within a central opening of a control collar with the tips of the wire strands protruding from one extremity of the collar. The central opening of the collar adjacent this extremity is formed by an inwardly tapering surface of revolution having a minimum inside diameter at the collar extremity. The brush is locked within the collar by a spring retaining ring which is captured by one of a plurality of axially displaced annular grooves located within the central opening of the collar. Set screws extending through the collar and into contact with the ferrule of the brush are also utilized to lock the brush in place. A concentric ring which encircles the ferrule maintains the collar and the brush in coaxial relationship.
Inventors
- 👤 J Hoffecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:19
CPC Classifications
A; A46; A46B; A46B7/00; A46B7/06; A46B7/08; B; B24; B24D; B24D13/00; B24D13/02; B24D13/10; B24D13/20; A46B13/00; A46B13/008; Y; Y10; Y10T; Y10T29/00; Y10T29/47
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
A rotatable metal working brush assembly comprising: a brush having a ferrule and a substantially uniformly dense array of wire strands extending from said ferrule; and a control collar having an opening receiving said brush, said opening being formed at one end of said collar by inwardly tapering surface of revolution, said inwardly tapering surface having a minimum inside diameter at the extremity of said collar, said array of wire strands being mounted coaxially with said inwardly tapering surface with a portion of each of said strands protruding beyond said extremity of said collar, said inwardly tapering surface directing peripheral wire strands in contact with said collar radially inwardly toward the axis of said assembly and thereby prevent the outward expansion of the central wire strands away from the axis of said assembly as said brush rotates about the axis of said assembly in contact with the metal surface being worked; and means for rotating said brush.
Claim 2
Dependent Claim
157 words
A rotatable metal working brush assembly comprising: a brush having a ferrule and a substantially uniformly dense array of wire strands extending from said ferrule; and a control collar having an opening receiving said brush, said opening being formed at one end of said collar by inwardly tapering surface of revolution, said inwardly tapering surface having a minimum inside diameter at the extremity of said collar, said array of wire strands being mounted coaxially with said inwardly tapering surface with a portion of each of said strands protruding beyond said extremity of said collar, said inwardly tapering surface directing peripheral wire strands in contact with said collar radially inwardly toward the axis of said assembly and thereby prevent the outward expansion of the central wire strands away from the axis of said assembly as said brush rotates about the axis of said assembly in contact with the metal surface being worked; and means for rotating said brush.
Claim 3
Dependent Claim
23 words
The metal working brush assembly of claim 1 wherein the angle of taper for said inwardly tapering surface is greater than 10* .
Claim 4
Dependent Claim
30 words
The metal working brush assembly of claim 1 wherein said portion of each of said strands protruding beyond said extremity is less than 50 percent of the total strand length.
Claim 5
Dependent Claim
40 words
The metal working brush assembly of claim 1 further comprising an adjustable means for holding said brush in said collar in various adjustable positions so as to permit said brush to be moved toward said extremity as said brush wears.
Claim 6
Dependent Claim
62 words
The metal working brush assembly of claim 4 wherein said collar comprises a plurality of annular grooves located in a plurality of axial positions along said collar in said opening, said adjustable means comprising a spring retaining ring insertable into any one of said grooves, said ferrule bearing upon said ring when said ring is inserted into said one of said grooves.
Claim 7
Dependent Claim
36 words
The metal working brush assembly of claim 4 wherein said collar includes at least one opening extending therethrough, said adjustable means comprising at least one set screw extending through said opening into engagement with said ferrule.
Claim 8
Dependent Claim
56 words
The metal working brush assembly of claim 1 wherein said ferrule includes a cylindrical exterior surface and said collar includes a cylindrical interior surface in said opening, said assembly further comprising a concentric ring located between said cylindrical interior surface and said cylindrical exterior surface to maintain the coaxial relationship of said collar and said brush.
Claim 9
Dependent Claim
18 words
The metal working brush assembly of claim 1 further comprising shaft threadedly engaging said brush through said ferrule.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |