Patent US3799401A successfully refreshed from Google Patents.
US3799401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone oil capacity control using polyurethane belt
Assignee: Xerox Corp
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Filing: 1972-12-05
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Granted: 1974-03-26
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Expires: 1992-12-05
Abstract
Abstract Lubricant is conveyed from a supply reservoir to an opening in a dispensing reservoir by an annular absorbant member, and at a rate which will maintain a desired predetermined volume of lubricant within the latter. The dispensing reservoir has a roller partially immersed in the lubricant for dispensing the latter. An overflow permits lubricant conveyed in excess of the desired predetermined volume to flow back into the supply reservoir.
Inventors
- 👤 O Braun
- 👤 F Onorati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:23
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/14; F16N7/16; F16N19/00; F16N19/006; G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
324 words
The combination of a fuser roller with an improved lubricator for applying lubricant to the roller, the improved lubricator comprising: a. a first reservoir adapted to contain a supply of lubricant; b. a second reservoir adapted to contain a predetermined volume of the lubricant, the second reservoir having an opening in the top thereof for receiving lubricant conveyed from the first reservoir and an overflow means located above the level of the supply of lubricant for allowing lubricant in excess of the predetermined volume of lubricant to flow into the first reservoir; c. a dispensing roller for dispensing lubricant from the second reservoir, the dispensing roller being mounted within the second reservoir for rotation about a substantially horizontal axis, the dispensing roller being partially immersed in the predetermined volume of lubricant; d. a wick in contact with both the fuser roller and the dispensing roller, and means movably mounted for biasing the wick into contact with both of said rollers; e. an annular conveyor member mounted so that the bottom thereof is immersed in the supply of lubricant within the first reservoir and the top thereof is disposed over the opening in the top of the second reservoir, the annular conveyor being adapted to convey lubricant from the first reservoir to the second reservoir at a rate which will maintain the predetermined volume of lubricant with the second reservoir, the annular conveyor member including an annular ring and an absorbent annular belt affixed to the outer annular periphery of the latter, the inner annular surface of the ring having teeth formed therein, a drive gear rotatably mounted and meshing with the teeth in the annular ring, and a squeeze roller mounted above the opening in the second reservoir and in squeezing contact with the annular belt, whereby lubricant rotatably conveyed from the first reservoir and over the opening in the second reservoir is squeezed from the annular conveyor member and flows into the opening.
Claim 2
Dependent Claim
324 words
The combination of a fuser roller with an improved lubricator for applying lubricant to the roller, the improved lubricator comprising: a. a first reservoir adapted to contain a supply of lubricant; b. a second reservoir adapted to contain a predetermined volume of the lubricant, the second reservoir having an opening in the top thereof for receiving lubricant conveyed from the first reservoir and an overflow means located above the level of the supply of lubricant for allowing lubricant in excess of the predetermined volume of lubricant to flow into the first reservoir; c. a dispensing roller for dispensing lubricant from the second reservoir, the dispensing roller being mounted within the second reservoir for rotation about a substantially horizontal axis, the dispensing roller being partially immersed in the predetermined volume of lubricant; d. a wick in contact with both the fuser roller and the dispensing roller, and means movably mounted for biasing the wick into contact with both of said rollers; e. an annular conveyor member mounted so that the bottom thereof is immersed in the supply of lubricant within the first reservoir and the top thereof is disposed over the opening in the top of the second reservoir, the annular conveyor being adapted to convey lubricant from the first reservoir to the second reservoir at a rate which will maintain the predetermined volume of lubricant with the second reservoir, the annular conveyor member including an annular ring and an absorbent annular belt affixed to the outer annular periphery of the latter, the inner annular surface of the ring having teeth formed therein, a drive gear rotatably mounted and meshing with the teeth in the annular ring, and a squeeze roller mounted above the opening in the second reservoir and in squeezing contact with the annular belt, whereby lubricant rotatably conveyed from the first reservoir and over the opening in the second reservoir is squeezed from the annular conveyor member and flows into the opening.
Claim 3
Dependent Claim
21 words
The combination set forth in claim 1, wherein the fuser roller and the wick are disposed above one of the reservoirs.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |