US3610693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a cylindrical brush
Assignee: Xerox Corp
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Filing: 1969-12-30
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Granted: 1971-10-05
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Expires: 1989-12-30
Abstract
Abstract A woven cut pile brush whose pile tufts are formed from glass fibers is particularly well suited for cleaning toner particles from reusable electrostatic imaging surfaces in xerographic processes. In addition, the backing yarn of the woven pile fabric from which the brush is made, is thermoplastic. A cylindrical brush is formed by helically winding a strip of the pile fabric on a mandrel, and heating the backing yarn to fuse the abutting edges of adjacent convolutions of the fabric together and to lock the pile tufts in place in the backing fabric.
Inventors
- 👤 Thomas W Solarek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:28
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0035
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
67 words
A method of forming a cylindrical brush from pile fabric whose backing yarns include thermoplastic fibers, comprising winding a strip of said fabric over a cylindrical mandrel with the adjacent edges of successive convolutions in abutting relationship, and heating the backing yarns to a state of partial fusion, whereby said abutting edges are fused together and the pile yarn segments are locked in the fused backing yarns.
Claim 2
Independent Claim
67 words
A method of forming a cylindrical brush from pile fabric whose backing yarns include thermoplastic fibers, comprising winding a strip of said fabric over a cylindrical mandrel with the adjacent edges of successive convolutions in abutting relationship, and heating the backing yarns to a state of partial fusion, whereby said abutting edges are fused together and the pile yarn segments are locked in the fused backing yarns.
Claim 3
Dependent Claim
25 words
A method as set forth in claim 1, wherein said thermoplastic fibers fuse to said mandrel, whereby said mandrel becomes the core of said brush.
Claim 4
Dependent Claim
20 words
A method as set forth in claim 1, wherein the pile yarn of said fabric is formed from glass fibers.
Claim 5
Dependent Claim
28 words
A method as set forth in claim 3, wherein said backing yarns include fibers selected from the group of thermoplastic materials consisting of polyethylene, polypropylene, and nylon plastic.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |