US3875608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush construction
Assignee: Baker Brush Co Inc
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Filing: 1974-02-13
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Granted: 1975-04-08
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Expires: 1994-02-13
Abstract
Abstract In accordance with the invention there is provided a brush having a heat resistant ferrule with an adhesive band formed about an internal surface. Thermoplastic bristles are disposed in the ferrule so that the upper bristle edges are aligned with the band, the lower ends of the bristles projecting from the ferrule. Heat is applied to the upper bristle edges, causing the same to melt, flow into contact with and become securely bonded to the adhesive, which is bonded to the ferrule, securely to unit the bristles and ferrule and form a barrier against the passage of paint and solvents therebeyond.
Inventors
- 👤 Gerhart Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:34
CPC Classifications
A; A46; A46B; A46B3/00; A46B3/08; A46B3/10; A46B3/12; Y; Y10; Y10S; Y10S15/00; Y10S15/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
113 words
As a new article of manufacture, a paint brush comprising, in combination, a ferrule, a batch of thermoplastic bristle members mounted in said ferrule, and batch including lower end portions projecting from one end of said ferrule, an adhesive coating on the interior of said ferrule in registry with the uppermost portion of said bristles, said bristles being united at said upper end by an integral fused layer defined by melting said upper ends, the peripheral portions of said layer being continuously bonded to said coating, said bristles being substantially free of connection with each other or said ferrule at any position closer to said one end of said ferrule than said layer.
Claim 2
Dependent Claim
113 words
As a new article of manufacture, a paint brush comprising, in combination, a ferrule, a batch of thermoplastic bristle members mounted in said ferrule, and batch including lower end portions projecting from one end of said ferrule, an adhesive coating on the interior of said ferrule in registry with the uppermost portion of said bristles, said bristles being united at said upper end by an integral fused layer defined by melting said upper ends, the peripheral portions of said layer being continuously bonded to said coating, said bristles being substantially free of connection with each other or said ferrule at any position closer to said one end of said ferrule than said layer.
Claim 3
Dependent Claim
29 words
The article of claim 1 wherein the interface between said layer and said adhesive is defined by a continuous sealed area resistant to the action of organic paint solvents.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |