US3763516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Car washing brush
Assignee: Individual
•
Filing: 1971-10-15
•
Granted: 1973-10-09
•
Expires: 1991-10-15
Abstract
Abstract Bristle-holding channels spiralled around a hollow cylindrical core are held in spaced turns by peening the core to deform the portions of the core between the turns outwardly to create a rib portion positioned between the turns of the channel. In another embodiment, an adhesive in unhardened state is placed on a core in beads extending along the core and a channel is then wound tightly on the core forcing the adhesive out from under the channel, and to form spacing ribs between the turns of the channel, and the ribs are then hardened.
Inventors
- 👤 J Welter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:58
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/001; A46B13/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
In a car washing brush, a cylindrical core, a channel-like bristle-holding member secured to the periphery of the core in an open helix, and spacer means engaging portions of the adjacent turns of the member to space them apart and comprising an adhesive securing the member to the core, the adhesive being in the form of a bead extending longitudinally relative to the core and being thickened between adjacent turns of the bristle-holding member.
Claim 2
Dependent Claim
74 words
In a car washing brush, a cylindrical core, a channel-like bristle-holding member secured to the periphery of the core in an open helix, and spacer means engaging portions of the adjacent turns of the member to space them apart and comprising an adhesive securing the member to the core, the adhesive being in the form of a bead extending longitudinally relative to the core and being thickened between adjacent turns of the bristle-holding member.
Claim 3
Dependent Claim
15 words
The car washing brush of claim 1 wherein the adhesive is a hardened caulking compound.
Claim 4
Dependent Claim
87 words
In a car washing brush, a generally cylindrical tubular metal core, and a channel-like bristle-holding member secured to the periphery of the core in an open helix, the helical portion of the core engaged by the bristle-holding member being flat transversely to the helix, the helical portion of the core not engaged by the bristle-holding member being belled or convex outwardly and concave inwardly transverse to the helix so as to space apart the adjacent turns of the member, the core being substantially uniform in thickness throughout.
Claim 5
Dependent Claim
87 words
In a car washing brush, a generally cylindrical tubular metal core, and a channel-like bristle-holding member secured to the periphery of the core in an open helix, the helical portion of the core engaged by the bristle-holding member being flat transversely to the helix, the helical portion of the core not engaged by the bristle-holding member being belled or convex outwardly and concave inwardly transverse to the helix so as to space apart the adjacent turns of the member, the core being substantially uniform in thickness throughout.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |