US3685206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-friction abrasion-resistant plastic weatherstrip
Assignee: Individual
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Filing: 1970-09-28
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Granted: 1972-08-22
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Expires: 1990-09-28
Abstract
Abstract An extruded all-plastic weatherstrip of the type having a rigid base insertable into a slot in a structure to be protected and a flexible weatherstrip portion protruding from the base into engagement with the edge of a door or window to be sealed, the base and weatherstrip portion being dual-extruded together to form a unitary structure, and the weatherstrip portion having partially embedded in its exposed wearing surface a series of spaced ribs of hard, low-friction, abrasion-resistant plastic material preferably also produced by multiple extrusion.
Inventors
- 👤 Gerald Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:37
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2314; B; B29; B29C; B29C48/00; B29C48/16; B29C48/18; B29C48/22; E06B7/2305; E06B7/2307; E06B7/231; B29C48/03; B29C48/12; B29C48/13; B29C48/15; B29C48/154; B29C48/155
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
192 words
A) An extruded all-plastic weatherstrip having a longitudinally extending base portion or rigid plastic material of sufficient mechanical strength to support the weatherstrip in a slot below a surface to be sealed, said base portion being in the form of an elongated strip, b. a longitudinally extending tape-like strip of flexible plastic material having one edge interlocked with and thermally fused to said base portion, and extending away from said base portion on one side thereof, c. the other edge of said flexible strip being free to flex, d. at least one of the sides of the flexible strip near the frEe portion having a series of parallel, sapaced-apart, longitudinally-extending ribs of relatively rigid plastic material partially embedded in its surface and integrally united therewith, with a portion of each rib extending beyond the surface of the flexible material to provide a series of smooth, hard low-friction ribs separated by flexible material, said ribs being sufficiently close together so that several of the ribs can engage and conform to a surface being sealed against the weather to provide a plurality of continuous sealing surfaces along the entire length of the engaged portion.
Claim 2
Dependent Claim
192 words
A) An extruded all-plastic weatherstrip having a longitudinally extending base portion or rigid plastic material of sufficient mechanical strength to support the weatherstrip in a slot below a surface to be sealed, said base portion being in the form of an elongated strip, b. a longitudinally extending tape-like strip of flexible plastic material having one edge interlocked with and thermally fused to said base portion, and extending away from said base portion on one side thereof, c. the other edge of said flexible strip being free to flex, d. at least one of the sides of the flexible strip near the frEe portion having a series of parallel, sapaced-apart, longitudinally-extending ribs of relatively rigid plastic material partially embedded in its surface and integrally united therewith, with a portion of each rib extending beyond the surface of the flexible material to provide a series of smooth, hard low-friction ribs separated by flexible material, said ribs being sufficiently close together so that several of the ribs can engage and conform to a surface being sealed against the weather to provide a plurality of continuous sealing surfaces along the entire length of the engaged portion.
Claim 3
Dependent Claim
55 words
The invention according to claim 1, said base strip having two sides and two edges, said flexible strip being joined to said base strip along a line between the two edges of the base strip, leaving both edges of the base strip free for insertion into a slot as the sole support for the weatherstrip.
Claim 4
Dependent Claim
27 words
The invention according to claim 2, the plane of said flexible strip being at an angle between 30* and 90* to the plane of the base strip.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |