Patent US3831553A successfully refreshed from Google Patents.
US3831553A
Expired / Lapsed
US
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Wick for oil dispensing apparatus
Assignee: Xerox Corp
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Filing: 1972-12-11
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Granted: 1974-08-27
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Expires: 1992-12-11
Abstract
Abstract Apparatus for lubricating the heated fuser roll in a heated pressure xerographic fusing system. The apparatus includes an applicator roll for providing a film of oil to a wick assembly having a main wick contacting the fuser roll and an auxiliary wick contacting the applicator roll and the main wick at one end and an oil supply at the other end to dispense sufficient oil when the applicator roll is inoperative. The improvement is in the form of a sponge member inserted between the main wick, auxiliary wick, and applicator roll to limit the flow of oil onto the main wick thereby preventing oversaturation thereof.
Inventors
- 👤 R Thettu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:26
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/12; G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
139 words
In a heated pressure roll fusing system for fusing toner images produced by an electrostatic copying machine in which a heated fuser roll disposed below the copy path is coated with an oil to prevent toner offset, an improved oil dispensing apparatus comprising an application roll mounted for rotation in oil for dispensing oil onto the lower surface of a wicking assembly which is positioned between said applicator roll and a heated fuser roll, a sponge member positioned intermediate said applicator roll surface and wicking assembly to control the flow of oil onto said wicking assembly, wherein said wicking assembly includes main wick means and auxiliary wick means with said sponge member positioned therebetween, wherein said auxiliary wick means is positioned in contact with the applicator roll surface extending from said sponge member to the surface of the oil.
Claim 2
Dependent Claim
139 words
In a heated pressure roll fusing system for fusing toner images produced by an electrostatic copying machine in which a heated fuser roll disposed below the copy path is coated with an oil to prevent toner offset, an improved oil dispensing apparatus comprising an application roll mounted for rotation in oil for dispensing oil onto the lower surface of a wicking assembly which is positioned between said applicator roll and a heated fuser roll, a sponge member positioned intermediate said applicator roll surface and wicking assembly to control the flow of oil onto said wicking assembly, wherein said wicking assembly includes main wick means and auxiliary wick means with said sponge member positioned therebetween, wherein said auxiliary wick means is positioned in contact with the applicator roll surface extending from said sponge member to the surface of the oil.
Claim 3
Dependent Claim
29 words
Apparatus according to claim 1 wherein said sponge member is made of a material selected from the group of hexa fluoropropylene vinylidene fluoride, fluoro silicone rubber, and urethane rubber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |