US4419315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruded fin-type weatherstrip
Assignee: Individual
•
Filing: 1982-08-20
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Granted: 1983-12-06
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Expires: 2002-08-20
Abstract
Abstract An integrally extruded all plastic "pile" weatherstrip comprises an elongated longitudinal substrate from which vertically project a plurality of integral, spaced parallel, thin, flexible, deformable, wavy S-configured fin members. The exposed upper ends of all or any desired lesser number of the fin elements may be partially slit to from 20% to 100% of the fin height to control the amount of air and water moisture infiltration through the weatherstrip. The fin element ends are slit at a desired bias angle with respect to a horizontal line lying within a horizontal plane surface in which the fin ends are located. The extrudable plastic is preferably high density polyethylene, polypropylene or polyvinyl chloride and may optionally contain an ultra-violet absorbent composition and a partially compatible lubricant. The wavy fin weatherstrip assembly may be manufactured by unbalancing an extrusion die so that the rate of plastic flow through the fin forming orifices is substantially greater than that occurring at the base or substrate forming orifice. Alternatively, the extrusion die can be built in sections and by oscillating the fin orifice section relative to a fixed base orifice section, or vice versa, the wavy fin configuration is extruded.
Inventors
- 👤 Gerald Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:53
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/12; B29C48/131; B29C48/25; B29C48/30; B29C48/302; B29C48/001; B29C48/13
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
138 words
A method of extrusion forming of a resilient, all plastic, thin, wavy fin-type weatherstrip having an elongated longitudinal substrate from which integrally projects vertically therefrom a plurality of thin, flexible, deformable, wavy S-configured fin members extending in the direction of extrusion, said fin members being spaced generally parallel to one another, said process comprising: providing an unbalanced extrusion die having a substrate forming orifice of a first thickness and a plurality of fin forming orifices of a second thickness extending from one side of the substrate forming orifice, wherein the first thickness is substantially greater than the second thickness, and extruding plastic through said unbalanced extrusion die so that the rate of the plastic flow through the fin forming die orifices is substantially greater than the rate of flow of the plastic through the substrate forming die orifice.
Claim 2
Independent Claim
138 words
A method of extrusion forming of a resilient, all plastic, thin, wavy fin-type weatherstrip having an elongated longitudinal substrate from which integrally projects vertically therefrom a plurality of thin, flexible, deformable, wavy S-configured fin members extending in the direction of extrusion, said fin members being spaced generally parallel to one another, said process comprising: providing an unbalanced extrusion die having a substrate forming orifice of a first thickness and a plurality of fin forming orifices of a second thickness extending from one side of the substrate forming orifice, wherein the first thickness is substantially greater than the second thickness, and extruding plastic through said unbalanced extrusion die so that the rate of the plastic flow through the fin forming die orifices is substantially greater than the rate of flow of the plastic through the substrate forming die orifice.
Claim 3
Independent Claim
124 words
A method of extrusion forming of a resilient, all plastic, thin, wavy fin-type weatherstrip having an elongated longitudinal substrate from which integrally projects vertically therefrom a plurality of thin, flexible, deformable, wavy S-configured fin members extending in the direction of extrusion, said fin members being spaced generally parallel to one another, said process comprising: providing an extrusion die formed in sections including a fin orifice section having a plurality of fin forming orifices of a second thickness, and a substrate orifice section connected thereto having a substrate forming orifice of a first thickness, wherein said first thickness is substantially greater than said second thickness, and extruding plastic through said extrusion die while oscillating one said orifice section relative to the other said orifice section.
Claim 4
Independent Claim
124 words
A method of extrusion forming of a resilient, all plastic, thin, wavy fin-type weatherstrip having an elongated longitudinal substrate from which integrally projects vertically therefrom a plurality of thin, flexible, deformable, wavy S-configured fin members extending in the direction of extrusion, said fin members being spaced generally parallel to one another, said process comprising: providing an extrusion die formed in sections including a fin orifice section having a plurality of fin forming orifices of a second thickness, and a substrate orifice section connected thereto having a substrate forming orifice of a first thickness, wherein said first thickness is substantially greater than said second thickness, and extruding plastic through said extrusion die while oscillating one said orifice section relative to the other said orifice section.
Claim 5
Dependent Claim
20 words
A method according to claim 2 wherein the fin orifice section is oscillated and the substrate orifice section is stationary.
Claim 6
Independent Claim
27 words
A method according to anyone of claims 1 or 2, wherein said plastic is selected from the group consisting of high density polyethylene, polypropylene and polyvinyl chloride.
Claim 7
Dependent Claim
17 words
A method according to claim 4 wherein the number of wavy fin members is at least 10.
Claim 8
Dependent Claim
31 words
A method according to claim 4 further comprising slitting at least some of said fin members to at least a partial depth at an angle from the direction of extrusion thereof.
Claim 9
Dependent Claim
28 words
A method according to claim 2, wherein a first plastic is extruded through the fin forming orifices and a second plastic is extruded through the substrate forming orifice.
Claim 10
Dependent Claim
48 words
A method according to claim 1 or 2, wherein the weatherstrip so produced has a substrate thickness of about 25 mils, a thickness of each fin element between 0.5 and 10 mils, a fin element height of about 175 mils and a substrate width of about 270 mils.
Claim 11
Dependent Claim
34 words
A method according to claim 1 or 2, further comprising slitting at least some of said fin members to a depth from 15 to 100%, said slits being spaced at least about 0.02" apart.
Claim 12
Dependent Claim
23 words
A method according to claim 1 or 2, further comprising slitting at least some of said fins to a depth of about 20-35%.
Claim 13
Dependent Claim
20 words
A method according to claim 1 or 2, further comprising slitting some of said fin members and leaving others unslit.
Claim 14
Dependent Claim
21 words
A method according to claim 1 or 2, further comprising slitting at least some of said fin members to varying depths.
Claim 15
Dependent Claim
62 words
A method according to claim 2, wherein said substrate orifice section of said extrusion die is provided with a central fin orifice, with said fin orifice section being provided in two parts adjacent each side of the cnetral fin orifice, whereby the extruded weatherstrip has a centrally located fin which is generally straight, the remaining fins being said wavy S-configured fin members.
References Cited (Backward Citations)
US827444A
Cited
US2188815A
Cited
US2280389A
Cited
US2402281A
Cited
US2739359A
Cited
US3193604A
Cited
US3235439A
Cited
US3280847A
Cited
US3178770A
Cited
US3266190A
Cited
FR1369155A
Cited
US3825459A
Cited
US4143195A
Cited
US3844874A
Cited
US3689617A
Cited
US4001366A
Cited
US3854859A
Cited
US3923576A
Cited
US4083667A
Cited
US4256685A
Cited
US4233259A
Cited
US4214930A
Cited
DE2926581A1
Cited
US4242392A
Cited
JPS56155734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |