US4480351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-component scrub brush
Assignee: Innovative Molding Technology Inc (Imtech)
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Filing: 1982-12-01
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Granted: 1984-11-06
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Expires: 2002-12-01
Abstract
Abstract A scrub brush, especially one used for surgical purposes, has a body of polyethylene molded onto a set of bristles made of a thermoplastic rubber such as a styrene/butadiene/styrene block copolymer. The body is integral with a set of stiffer polyethylene bristles, serving mainly for fingernail cleaning, which may be disposed on the side opposite the softer elastomeric bristles or flanked by the latter.
Inventors
- 👤 Thomas Koffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:28
CPC Classifications
A; A46; A46B; A46B1/00; A46B5/00; A46B5/02; A46B9/00; A46B9/02; A46B9/06; A46B2200/00; A46B2200/10; A46B2200/1006; A46B2200/1013; Y; Y10; Y10S; Y10S15/00; Y10S15/05; Y10S15/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
89 words
A scrub brush comprising a body, a first set of bristles of a relatively hard polymeric material on said body, and a second set of bristles of a relatively soft elastomeric material on said body, said relatively soft material being a block copolymer of the form A-B-A, A being a polymerized mono-alpha-alkenyl arene, B being a polymerized conjucated diene, said relatively hard material being a lower polyolefin, said relatively soft and relatively hard material having moduli of elasticity differing by a ratio of at least 1:100 at room temperature.
Claim 2
Dependent Claim
89 words
A scrub brush comprising a body, a first set of bristles of a relatively hard polymeric material on said body, and a second set of bristles of a relatively soft elastomeric material on said body, said relatively soft material being a block copolymer of the form A-B-A, A being a polymerized mono-alpha-alkenyl arene, B being a polymerized conjucated diene, said relatively hard material being a lower polyolefin, said relatively soft and relatively hard material having moduli of elasticity differing by a ratio of at least 1:100 at room temperature.
Claim 3
Dependent Claim
27 words
A scrub brush as defined in claim 1 wherein said body consists of said relatively hard polymeric material and is integral with said first set of bristles.
Claim 4
Dependent Claim
23 words
A scrub brush as defined in claim 2 wherein said first and second sets of bristles project from opposite sides of said body.
Claim 5
Dependent Claim
33 words
A scrub brush as defined in claim 2 wherein said second set of bristles is divided into two groups separated by a gap, said first set of bristles being disposed in said gap.
Claim 6
Dependent Claim
27 words
A scrub brush as defined in claim 4 wherein the bristles of said first set have tips recessed from those of the bristles of said second set.
Claim 7
Dependent Claim
16 words
A scrub brush as defined in claim 1 wherein said block copolymer has the configuration polystyrene-polybutadiene-polystyrene.
Claim 8
Dependent Claim
15 words
A scrub brush as defined in claim 1 wherein said relatively hard material is polyethylene.
Claim 9
Dependent Claim
22 words
A scrub brush as defined in claim 1 wherein said block copolymer has the configuration polystyrene-polybutadiene-polystyrene, said relatively hard material being polyethylene.
Claim 10
Dependent Claim
30 words
A scrub brush as defined in claim 2 wherein the bristles of said second set are integral with a backing of said relatively soft elastomeric material adhering to said body.
Claim 11
Dependent Claim
45 words
A scrub brush as defined in claim 9 wherein said body comprises a flat plate, said backing overlying the greater part of the area of a major surface of said plate, said first set of bristles being confined to a limited zone of said area.
Claim 12
Dependent Claim
26 words
A scrub brush as defined in claim 1 wherein some of the bristles of said first set have laterally exposed tips facilitating the cleaning of fingernails.
Claim 13
Dependent Claim
28 words
A scrub brush as defined in claim 11 wherein the bristles of said first set are inserted in rows of different height between bristles of said second set.
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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |