US4373541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bristle structure for brushes and brush assembly
Assignee: Individual
•
Filing: 1980-11-10
•
Granted: 1983-02-15
•
Expires: 2000-11-10
Abstract
Abstract A bristle structure includes abrasive elements located on the shaft of the bristle and providing a cleaning action in addition to the cleaning action provided by the tip ends of the bristles. Such abrasive elements may include scales, serrations, projections ridges, multi-sided designs and other shapes. Multiple bristle structures are combined to form a novel brush assembly.
Inventors
- 👤 Gary J. Nishioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:06
CPC Classifications
A; A46; A46D; A46D1/00; A46D1/02; A46D1/0238; A46B; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
195 words
A brush structure comprising (a) a head portion, (b) and multiple bristles mounted on said head portion, (c) said bristles each having a base end attached to said head portion, (d) said bristles also each having a shaft portion projecting from said base end and terminating in a tip end, (e) said bristles being arranged in multiple tufts on said head portion with each of said tufts comprising multiple bristles, (f) at least some of said bristles having multiple longitudinally extending flat sides joined with each other by cutting edges, (g) said flat sides and said cutting edges of said bristles extending in uninterrupted relation along the full length of said bristles from said base end to said tip end, (h) said cutting edges being substantially equally spaced apart along the full length of said bristles, (i) said bristles being sufficiently rigid to maintain themselves normally in free-standing relation on said head portion but being sufficiently flexible to bend during brushing motions whereby to allow abrasive functioning of the tip ends of the bristles as well as to allow abrasive functioning of said cutting edges along the shaft portions of said bristles in said tufts.
Claim 2
Dependent Claim
195 words
A brush structure comprising (a) a head portion, (b) and multiple bristles mounted on said head portion, (c) said bristles each having a base end attached to said head portion, (d) said bristles also each having a shaft portion projecting from said base end and terminating in a tip end, (e) said bristles being arranged in multiple tufts on said head portion with each of said tufts comprising multiple bristles, (f) at least some of said bristles having multiple longitudinally extending flat sides joined with each other by cutting edges, (g) said flat sides and said cutting edges of said bristles extending in uninterrupted relation along the full length of said bristles from said base end to said tip end, (h) said cutting edges being substantially equally spaced apart along the full length of said bristles, (i) said bristles being sufficiently rigid to maintain themselves normally in free-standing relation on said head portion but being sufficiently flexible to bend during brushing motions whereby to allow abrasive functioning of the tip ends of the bristles as well as to allow abrasive functioning of said cutting edges along the shaft portions of said bristles in said tufts.
Claim 3
Dependent Claim
72 words
The bristle structure of claim 1 wherein at least some of said bristles comprise three longitudinally extending flat sides joining with each other by three cutting edges in a triangular shape, said cutting edges being substantially equally spaced apart, said three flat sides and said three cutting edges extending in said uninterrupted relation along the full length of said bristles so that said bristles are triangular in shape along their entire length.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |