US5123151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic fixing roll with excellent release property
Assignee: Japan Gore Tex Inc
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Filing: 1991-01-07
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Granted: 1992-06-23
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Expires: 2011-01-07
Abstract
Abstract An elastic roll of the first embodiment comprises an elastic body layer formed in a thickness not less than 200 μm on a metal core bar; and a covering layer with a release property formed in a thickness ranging from 3 μm to 200 μm on the surface of the elastic body, the covering layer being formed of a composite material composed of fibrillated polytetrafluoroethylene and elastomer having releasing properties. An elastic fixing roll of second embodiment comprises a heat-conductive elastic body layer formed of heat-resistant elastomer in a thickness not less than 200 μm on a metal core bar; an oil-resistant layer formed of oil-resistant elastomer in a layer thickness ranging from 3 μm to 200 μm on the elastic body layer; and a covering layer having a release property and formed of a composite material composed of fibrillated polytetrafluoroethylene and elastomer with a release property in a thickness ranging from 3 μm to 200 μm on the oil-resistant layer.
Inventors
- 👤 Yasuhiro Uehara
- 👤 Yoshio Shoji
- 👤 Michiaki Yasuno
- 👤 Hiroshi Kato
- 👤 Hiroyasu Kikukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:20
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
67 words
An elastic roll, comprising: an elastic body layer formed in a thickness not less than 200 μm on a metal core bar; and a covering layer with a release property formed in a thickness ranging from 3 μm to 200 μm on the surface of said elastic body layer, said covering layer being formed of a composite material composed of fibrillated polytetrafluoroethylene and elastomer having releasing properties.
Claim 2
Dependent Claim
67 words
An elastic roll, comprising: an elastic body layer formed in a thickness not less than 200 μm on a metal core bar; and a covering layer with a release property formed in a thickness ranging from 3 μm to 200 μm on the surface of said elastic body layer, said covering layer being formed of a composite material composed of fibrillated polytetrafluoroethylene and elastomer having releasing properties.
Claim 3
Dependent Claim
29 words
An elastic roll according to claim 1, wherein said elastic body layer is formed of one selected from the group consisting of oil-resistant silicone rubber, fluororubber, and fluoro-silicone rubber.
Claim 4
Dependent Claim
37 words
An elastic roll according to claim 1, wherein said covering layer is composed of expanded, porous polytetrafluoroethylene film, and elastomer having a release property and filled in voids of said expanded porous polytetrafluoroethylene by soaking and hardening.
Claim 5
Dependent Claim
21 words
An elastic roll according to claim 1 or claim 2, wherein said elastomer is silicone rubber of normal temperature vulcanizing type.
Claim 6
Dependent Claim
19 words
An elastic roll according to claim 1 or claim 2, wherein said elastomer is either fluoro-silicone rubber or fluororubber.
Claim 7
Dependent Claim
88 words
An elastic fixing roll, comprising: a heat-conductive elastic body layer formed of heat-resistant elastomer in a thickness not less than 200 μm on a metal core bar; an oil-resistant layer formed of oil-resistant elastomer in a layer thickness ranging from 3 μm to 200 μm on said elastic body layer; and a covering layer having a release property and formed of a composite material composed of fibrillated polytetrafluoroethylene and elastomer with a release property in a thickness ranging from 3 μm to 200 μm on said oil-resistant layer.
Claim 8
Dependent Claim
88 words
An elastic fixing roll, comprising: a heat-conductive elastic body layer formed of heat-resistant elastomer in a thickness not less than 200 μm on a metal core bar; an oil-resistant layer formed of oil-resistant elastomer in a layer thickness ranging from 3 μm to 200 μm on said elastic body layer; and a covering layer having a release property and formed of a composite material composed of fibrillated polytetrafluoroethylene and elastomer with a release property in a thickness ranging from 3 μm to 200 μm on said oil-resistant layer.
Claim 9
Dependent Claim
31 words
An elastic fixing roll according to claim 6, wherein said heat-conductive elastic body layer is composed of one selected from the group consisting of heat-resistant silicone rubber, fluororubber, and fluoro-silicone rubber.
Claim 10
Dependent Claim
38 words
An elastic fixing roll according to claim 6, wherein said covering layer is composed of expanded porous polytetrafluoroethylene film, and elastomer having a release property filled in voids of said expanded porous polytetrafluoroethylene film by soaking and hardening.
Claim 11
Dependent Claim
22 words
An elastic fixing roll according to claim 6 or claim 7, wherein said elastomer is silicone rubber of normal temperature vulcanizing type.
Claim 12
Dependent Claim
20 words
An elastic fixing roll according to claim 6 or claim 7, wherein said elastomer is either fluoro-silicone rubber or fluororubber.
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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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |