US3660210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static autogenous sealing bar
Assignee: CHAPMAN INDUSTRIES Inc A CORP OF
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Filing: 1969-05-13
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Granted: 1972-05-02
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Expires: 1989-05-13
Abstract
Abstract A static sealer bar is provided for heat-sealing organic polymeric materials, especially fluorocarbon films; the static sealer bar is characterized by a base member of, for example, asbestos material having a heating element disposed in a slot or recess extending substantially the entire length of one face of the base member; the slotted surface of the base member is covered by a layer of polyimide film which is, in turn, covered by a layer of silicone rubber film, and the silicone rubber film is preferably covered by a layer of polyimide. A method for heatsealing fluorocarbon films in situ on large diameter rolls utilizing the static sealer bar also is provided.
Inventors
- 👤 Harry Samuel Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:14
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/82; B29C66/828; B29C66/8282; B29C63/00; B29C63/02; B29C63/04; B29C63/06; B29C63/38; B29C63/42; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C66/01; B29C66/03; B29C66/032; B29C66/0324; B29C66/03241; B29C66/32; B29C66/324; B29C66/345; B29C66/3452; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/49; B29C66/70; B29C66/71; B29C66/73; B29C66/737; B29C66/7371; B29C66/73715; B29C66/81; B29C66/818; B29C66/8182; B29C66/81821; B29C66/8187; B29C66/81871; B29C53/00; B29C53/36; B29C53/38; B29C63/18; B29C65/228; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/114; B29C66/1142; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29L; B29L2023/00; B29L2023/22; B29L2031/00; B29L2031/32; B29L2031/324; B29L2031/709
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
15 words
The static sealer bar of claim 1 whErein said body is of hard asbestos material.
Claim 2
Dependent Claim
21 words
The static sealer bar of claim 2 wherein said first layer of high temperature resistant material is of polyimide polymeric material.
Claim 3
Dependent Claim
22 words
The static sealer bar of claim 3 wherein said intermediate layer of high temperature resistant elastomeric-type material is of silicone elastomeric material.
Claim 4
Dependent Claim
21 words
The static sealer bar of claim 1 wherein said release layer of high temperature resistant material is of polyimide polymeric material.
Claim 5
Dependent Claim
23 words
The static sealer bar of claim 1 wherein said first and release layers of high temperature resistant material are of polyimide polymeric material.
Claim 6
Dependent Claim
15 words
The static sealer bar of claim 1 wherein said intermediate layer comprises a metallic band.
Claim 7
Dependent Claim
15 words
The static sealer bar of claim 7 wherein said metallic band is of stainless steel.
References Cited (Backward Citations)
US2565161A
Cited
US3015601A
Cited
US3179632A
Cited
US3179635A
Cited
US3386503A
Cited
US3409494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |