US4381273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of co-extruding a reinforced composite foamed resin channel-shaped sealing strip having an abraded surface portion
Assignee: SAIAG SpA
•
Filing: 1980-10-01
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Granted: 1983-04-26
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Expires: 2000-10-01
Abstract
Abstract The sealing strip includes a channel-shaped attachment profile of rubber, in which a metallic reinforcing strip is embedded; this profile has an external coating layer of sponge rubber with an outer surface rendered velvety by abrasion.
Inventors
- 👤 Roberto Azzola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:31
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/22; B60; B60J; B60J10/00; B60J10/15; B60J10/16; B60J10/17; B60J10/20; B60J10/24; B60J10/80; B29L; B29L2031/00; B29L2031/26; Y; Y10; Y10S; Y10S277/00; Y10S277/921; Y10S277/924; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198; Y10T428/24744; Y10T428/29; Y10T428/2902
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
A process for manufacturing a sealing strip for vehicle bodies comprising a channel-shaped attachment profile of solid rubber having embedded therein a metallic reinforcing strip, comprising the steps of: co-extruding with the attachment profile a layer of sponge rubber coating the outer surface of the profile; co-vulcanizing the profile and the coating layer thereon; and abrading the exposed surface of the coating layer to render said surface velvety.
Claim 2
Dependent Claim
68 words
A process for manufacturing a sealing strip for vehicle bodies comprising a channel-shaped attachment profile of solid rubber having embedded therein a metallic reinforcing strip, comprising the steps of: co-extruding with the attachment profile a layer of sponge rubber coating the outer surface of the profile; co-vulcanizing the profile and the coating layer thereon; and abrading the exposed surface of the coating layer to render said surface velvety.
Claim 3
Dependent Claim
23 words
The process of claim 1, wherein also a sealing bead of sponge rubber is co-extruded together with the attachment profile and coating layer.
Claim 4
Dependent Claim
26 words
The process of claim 2, wherein a single feed flow of expandible blend of rubber is used to form both the coating layer and sealing bead.
Claim 5
Dependent Claim
57 words
The process of claim 5, wherein: a sealing bead of sponge rubber is co-extruded together with the attachment profile and coating layer; separate feed flows of different expandible rubber blends are used to obtain the sealing bead and the coating layer; the respective expandible blends for the sealing bead and coating layer differing in softness or color.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |