US5232499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid metering and coating device
Assignee: Japan Gore Tex Inc
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Filing: 1991-09-30
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Granted: 1993-08-03
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Expires: 2011-09-30
Abstract
Abstract A liquid metering and coating device made of a liquid permeation control layer adhered to a porous support in which the support is an open-celled foam internally reinforced to obtain the strength, resilience, and heat resistance needed for high durability in use as a part of a hot toner image fixation mechanism in a plain paper copying machine.
Inventors
- 👤 Hiroshi Kato
- 👤 Hiroyasu Kikukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:01
CPC Classifications
B; B05; B05C; B05C1/00; B05C1/04; B05C1/08; B05C1/0826; B05C1/083; G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025; G03G2215/00; G03G2215/20; G03G2215/2093; G03G2215/2096; Y; Y10; Y10S; Y10S118/00; Y10S118/15
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
A liquid metering and coating device comprising a) a porous permeation control material of porous polytetrafluoroethylene adhered to the outer surface of b) a porous tubular support comprising an open celled thermosetting polymer; c) a reinforcing material contiguous with said permeation control material and located in the outer portion of the pores of said porous tubular support, comprising a mixture of silicone oil and silicone rubber; d) an oil-supply material contiguous with the reinforcing material and substantially filling the pores radially closer to the center of said porous tubular support, comprising a mixture of silicone oil and silicone rubber; said oil-supply material having a silicone oil to silicone rubber ratio greater than the silicone oil to silicone rubber ratio of said reinforcing material; silicone oil from said oil-supply material penetrating into said reinforcing material and into said permeation control material.
Claim 2
Dependent Claim
140 words
A liquid metering and coating device comprising a) a porous permeation control material of porous polytetrafluoroethylene adhered to the outer surface of b) a porous tubular support comprising an open celled thermosetting polymer; c) a reinforcing material contiguous with said permeation control material and located in the outer portion of the pores of said porous tubular support, comprising a mixture of silicone oil and silicone rubber; d) an oil-supply material contiguous with the reinforcing material and substantially filling the pores radially closer to the center of said porous tubular support, comprising a mixture of silicone oil and silicone rubber; said oil-supply material having a silicone oil to silicone rubber ratio greater than the silicone oil to silicone rubber ratio of said reinforcing material; silicone oil from said oil-supply material penetrating into said reinforcing material and into said permeation control material.
Claim 3
Dependent Claim
49 words
The liquid metering and coating device as recited in claim 1 wherein the pores of the permeation control material contain a mixture of silicone oil and silicone rubber in a silicone oil to silicone rubber ratio less than the silicone oil to silicone rubber ratio of the reinforcing material.
Claim 4
Dependent Claim
24 words
The liquid metering and coating device as recited in claim 1 or claim 2, wherein the porous permeation control material is porous expanded polytetrafluoroethylene.
Claim 5
Dependent Claim
54 words
A liquid metering and coating device as recited in claim 3 wherein the reinforcing material and the oil-supply material are combined and formed from a mixture of silicone oil and silicone rubber having a silicone oil to silicone rubber ratio greater than the silicone oil to silicone rubber ratio of the permeation control material.
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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) | 1996-08-02 | 1997-02-01 | 1997-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-02 | 2001-02-01 | 2001-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-02 | 2005-02-01 | 2005-08-03 | $7700.00 | Window Closed / Lapsed |