US5482552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid metering and coating device
Assignee: Japan Gore Tex Inc
•
Filing: 1994-03-17
•
Granted: 1996-01-09
•
Expires: 2014-03-17
Abstract
Abstract A liquid metering and coating device made of a liquid permeation control material including porous polytetrafluoroethylene, adhered to a porous support material of open-celled foam. The porous support and permeation control material contain mixtures of silicone oil and silicone rubber which bond to the porous support material and form an interconnected network of silicone rubber throughout the device. The device is suitable for use as a part of a toner fixation mechanism in a plain paper copying machine.
Inventors
- 👤 Hiroyasu Kikukawa
- 👤 Hiroshi Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:33
CPC Classifications
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: 15
Claim 1
Independent Claim
70 words
A liquid metering and coating device comprising (a) a porous permeation control material comprising porous polytetrafluoroethylene adhered to the outer surface of (b) a porous open-celled support material of silicone rubber foam containing in its pores (c) a first mixture of silicone oil and cross-linked silicone rubber, wherein portions of said cross-linked silicone rubber of said first mixture are bonded to an internal surface of said silicone rubber support material.
Claim 2
Dependent Claim
70 words
A liquid metering and coating device comprising (a) a porous permeation control material comprising porous polytetrafluoroethylene adhered to the outer surface of (b) a porous open-celled support material of silicone rubber foam containing in its pores (c) a first mixture of silicone oil and cross-linked silicone rubber, wherein portions of said cross-linked silicone rubber of said first mixture are bonded to an internal surface of said silicone rubber support material.
Claim 3
Dependent Claim
76 words
The liquid metering and coating device as recited in claim 1 wherein pores of the porous permeation control material contain a second mixture of silicone oil and silicone rubber, said second mixture having a silicone oil to silicone rubber ratio less than the silicone oil to silicone rubber ratio of said first mixture, and wherein portions of said silicone rubber of said second mixture are bonded to portions of said silicone rubber of said first mixture.
Claim 4
Dependent Claim
46 words
The liquid metering and coating device as recited in claim 1 wherein pores of the porous permeation control material contain silicone rubber, wherein portions of said silicone rubber in said porous permeation control material are bonded to portions of said silicone rubber in said support material.
Claim 5
Dependent Claim
24 words
The liquid metering and coating device as recited in claims 1, 2, or 3, wherein the porous permeation control material comprises porous expanded polytetrafluoroethylene.
Claim 6
Dependent Claim
109 words
A liquid metering and coating device comprising (a) a porous permeation control material comprising porous polytetrafluoroethylene adhered to an outer surface of (b) a porous open-celled support material of synthetic polymer material; said support material having region pores penetrated to a depth of five percent or more of the thickness of said support material with a reinforcing material comprising silicone rubber, and said support material containing in its pores a first mixture of silicone oil and silicone rubber wherein portions of said silicone rubber of said mixture of silicone oil and silicone rubber are bonded to portions of said silicone rubber of said reinforcing material of said support material.
Claim 7
Dependent Claim
109 words
A liquid metering and coating device comprising (a) a porous permeation control material comprising porous polytetrafluoroethylene adhered to an outer surface of (b) a porous open-celled support material of synthetic polymer material; said support material having region pores penetrated to a depth of five percent or more of the thickness of said support material with a reinforcing material comprising silicone rubber, and said support material containing in its pores a first mixture of silicone oil and silicone rubber wherein portions of said silicone rubber of said mixture of silicone oil and silicone rubber are bonded to portions of said silicone rubber of said reinforcing material of said support material.
Claim 8
Dependent Claim
76 words
The liquid metering and coating device as recited in claim 5 wherein the pores of porous permeation control material contain a second mixture of silicone oil and silicone rubber, said second mixture having a silicone oil to silicone rubber ratio less than the silicone oil to silicone rubber ratio of said first mixture, and wherein portions of said silicone rubber of said second mixture are bonded to portions of said silicone rubber of said reinforcing material.
Claim 9
Dependent Claim
46 words
The liquid metering and coating device as recited in claim 5 wherein pores of the porous permeation control material contain silicone rubber, wherein portions of said silicone rubber in said porous permeation control material are bonded to portions of said silicone rubber in said reinforcing material.
Claim 10
Dependent Claim
24 words
The liquid metering and coating device as recited in claims 5, 6, or 7, wherein the porous permeation control material comprises porous expanded polytetrafluoroethylene.
Claim 11
Dependent Claim
140 words
A liquid metering and coating device comprising (a) a porous permeation control material comprising porous polytetrafluoroethylene adhered to an outer surface of (b) a porous open-celled support material of synthetic polymer material; said support material having pores penetrated to a depth of five percent or more of the thickness of said support material with a reinforcing material of a first mixture of silicone oil and silicone rubber, and said support material containing in its pores a second mixture of silicone oil and silicone rubber said second mixture having a silicone oil to silicone rubber ratio more than the silicone oil to silicone rubber ratio of said first mixture, wherein portions of said silicone rubber of said second mixture of silicone oil and silicone rubber are bonded to portions of said silicone rubber of said reinforcing material of said support material.
Claim 12
Dependent Claim
140 words
A liquid metering and coating device comprising (a) a porous permeation control material comprising porous polytetrafluoroethylene adhered to an outer surface of (b) a porous open-celled support material of synthetic polymer material; said support material having pores penetrated to a depth of five percent or more of the thickness of said support material with a reinforcing material of a first mixture of silicone oil and silicone rubber, and said support material containing in its pores a second mixture of silicone oil and silicone rubber said second mixture having a silicone oil to silicone rubber ratio more than the silicone oil to silicone rubber ratio of said first mixture, wherein portions of said silicone rubber of said second mixture of silicone oil and silicone rubber are bonded to portions of said silicone rubber of said reinforcing material of said support material.
Claim 13
Dependent Claim
84 words
The liquid metering and coating device as recited in claim 9 wherein the pores of porous permeation control material contain a third mixture of silicone oil and silicone rubber, said third mixture having a silicone oil to silicone rubber ratio less than the silicone oil to silicone rubber ratio of said first mixture of said reinforcing material, and wherein portions of said silicone rubber of said third mixture are bonded to portions of said silicone rubber of said first mixture of said reinforcing material.
Claim 14
Dependent Claim
46 words
The liquid metering and coating device as recited in claim 9 wherein pores of the porous permeation control material contain silicone rubber, wherein portions of said silicone rubber in said porous permeation control material are bonded to portions of said silicone rubber in said reinforcing material.
Claim 15
Dependent Claim
24 words
The liquid metering and coating device as recited in claims 9, 10, or 11, wherein the porous permeation control material comprises porous expanded polytetrafluoroethylene.
References Cited (Backward Citations)
US3953566A
Cited
US3962153A
Cited
US4187390A
Cited
US4096227A
Cited
US4522866A
Cited
JPS5817129A
Cited
US4796046A
Cited
JPS61245178A
Cited
JPS62178992A
Cited
US5180899A
Cited
US5123151A
Cited
US5232499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |