Patent US4196754A successfully refreshed from Google Patents.
US4196754A
Expired / Lapsed
US
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Molded rubber article
Assignee: Gates Corp
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Filing: 1976-05-10
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Granted: 1980-04-08
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Expires: 1996-05-10
Abstract
Abstract A molded rubber article is described having an exterior or surface layer which is formed of a blend including a heat setting rubbery polymer, and a halogenated polyethylene acting as an internal mold release agent during processing and also enhancing the surface qualities of the molded article.
Inventors
- 👤 Roger A. Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:08
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; B29C; B29C33/00; B29C33/56; B29C33/60; B29C33/62; B29C33/68; B29C49/00; B29C49/0005; B29C49/0006; B29C53/00; B29C53/22; B29C53/30; F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/081; F16L11/11; F16L11/112; B29K; B29K2021/00; Y; Y10; Y10S; Y10S264/00; Y10S264/52
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A molded hose article providing easy release from a metal mold surface against which the hose article is cured, comprising: a tube; and a cover disposed outwardly of the tube, at least the outer surface of the tube being formed of a blend of (1) a major portion of a heat setting rubbery polymer, which by itself normally tends to at least partially adhere to the associated metal mold surface, and (29) minor portion of a halogenated polyethylene rubber.
Claim 2
Dependent Claim
79 words
A molded hose article providing easy release from a metal mold surface against which the hose article is cured, comprising: a tube; and a cover disposed outwardly of the tube, at least the outer surface of the tube being formed of a blend of (1) a major portion of a heat setting rubbery polymer, which by itself normally tends to at least partially adhere to the associated metal mold surface, and (29) minor portion of a halogenated polyethylene rubber.
Claim 3
Dependent Claim
21 words
The molded hose article of claim 1, wherein the tube is formed of a material distinct from that of the cover.
Claim 4
Dependent Claim
79 words
In a molded rubber article having an exterior surface comprised of a heat setting rubbery polymer normally at least partially adherent to the associated mold surface against which the article is cured, the improvement comprising said article having a mold releasable exterior surface of a blend of said rubbery polymer with a halogenated polyethylene, wherein from about 2 to about 175 weight percent of the halogenated polyethylene is employed based on the weight of the heat setting rubbery polymer.
Claim 5
Dependent Claim
79 words
In a molded rubber article having an exterior surface comprised of a heat setting rubbery polymer normally at least partially adherent to the associated mold surface against which the article is cured, the improvement comprising said article having a mold releasable exterior surface of a blend of said rubbery polymer with a halogenated polyethylene, wherein from about 2 to about 175 weight percent of the halogenated polyethylene is employed based on the weight of the heat setting rubbery polymer.
Claim 6
Dependent Claim
87 words
A molded hose article providing easy release from a metal mold surface against which it is cured, comprising: a tube; and a cover disposed outwardly of the tube formed of a blend of (1) a heat setting rubbery polymer, which by itself normally tends to at least partially adhere to an associated metal mold surface, and (2) a halogenated polyethylene elastomer wherein there is present from about 2 to about 175 weight percent of the halogenated polyethylene based on the weight of the heat setting rubbery polymer.
Claim 7
Dependent Claim
87 words
A molded hose article providing easy release from a metal mold surface against which it is cured, comprising: a tube; and a cover disposed outwardly of the tube formed of a blend of (1) a heat setting rubbery polymer, which by itself normally tends to at least partially adhere to an associated metal mold surface, and (2) a halogenated polyethylene elastomer wherein there is present from about 2 to about 175 weight percent of the halogenated polyethylene based on the weight of the heat setting rubbery polymer.
Claim 8
Dependent Claim
33 words
The molded hose article of claim 4 wherein from about 12 to about 175 weight percent of the halogenated polyethylene elastomer is employed based on the weight of the heat setting rubber polymer.
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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) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |