US3850099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washing roller and wiper blade mechanism for duplicating machines
Assignee: AB Dick Co
•
Filing: 1973-10-24
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Granted: 1974-11-26
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Expires: 1993-10-24
Abstract
Abstract A duplicating machine or the like wherein a blanket cylinder or other surface subject to contamination by duplicating inks and the like is provided with means for periodically cleaning the surface. A washing roller is adapted to apply cleaning fluid to the contaminated surface, and a wiper engages the washing roller for purposes of removing cleaning fluid after the cleaning fluid has been in contact with the surface to be cleaned. The wiper comprises an elongated blade extending parallel with the axis of the washing roller and including means for holding the blade in engagement with the washing roller. The blade defines a plurality of perforations in the area of engagement with the washing roller whereby contaminated material including the used cleaning fluid is adapted to pass through the perforations during contact of the blade with the washing roller whereby the washing roller is prepared for receiving unused cleaning fluid.
Inventors
- 👤 W Laben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:30
CPC Classifications
B; B41; B41F; B41F35/00; B41F35/06; B41P; B41P2235/00; B41P2235/10; B41P2235/20; B41P2235/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
175 words
In a duplicating machine or the like wherein a surface becomes contaminated and is subjected to repeated cleaning operations, a washing roller for applying cleaning fluid to the contaminated surface, a delivery means for delivering metered amounts of the cleaning fluid into position for pick-up of the fluid by the washing roller, and a wiper engaging said washing roller for purposes of removing contaminated cleaning fluid from the washing roller subsequent to contact of the fluid with the surface to be cleaned, the improvement wherein said wiper comprises an elongated blade extending parallel with the axis of said washing roller, and means for holding said blade in engagement with said washing roller, said blade defining a plurality of perforations in the area of engagement with the washing roller whereby contaminated material including used cleaning fluid is adapted to pass through the perforations during contact of the wiper blade with the washing blade, said perforations comprising holes between 0.03 and 0.06 inches in diameter with the distance between holes being between about 0.1 and 0.20 inches.
Claim 2
Dependent Claim
175 words
In a duplicating machine or the like wherein a surface becomes contaminated and is subjected to repeated cleaning operations, a washing roller for applying cleaning fluid to the contaminated surface, a delivery means for delivering metered amounts of the cleaning fluid into position for pick-up of the fluid by the washing roller, and a wiper engaging said washing roller for purposes of removing contaminated cleaning fluid from the washing roller subsequent to contact of the fluid with the surface to be cleaned, the improvement wherein said wiper comprises an elongated blade extending parallel with the axis of said washing roller, and means for holding said blade in engagement with said washing roller, said blade defining a plurality of perforations in the area of engagement with the washing roller whereby contaminated material including used cleaning fluid is adapted to pass through the perforations during contact of the wiper blade with the washing blade, said perforations comprising holes between 0.03 and 0.06 inches in diameter with the distance between holes being between about 0.1 and 0.20 inches.
Claim 3
Dependent Claim
72 words
A construction in accordance with claim 1 wherein said washing roller includes a surface formed of elastomeric material, said wiper blade pressing against said washing roller whereby the area of engagement between said wiper blade and washing roller is wider than a line contact, and including a number of rows of perforations extending longitudinally of the blade whereby the rows of perforations are at least sufficient to cover said area of contact.
Claim 4
Dependent Claim
20 words
A construction in accordance with claim 2 wherein a minimum of from two to four rows of perforations are provided.
Claim 5
Dependent Claim
23 words
A construction in accordance with claim 3 wherein the perforations of one row are staggered relative to the perforations of an adjacent row.
Claim 6
Dependent Claim
26 words
A construction in accordance with claim 1 wherein said holes are about 0.05 inches in diameter with the distance between said holes being about 0.17 inches.
Claim 7
Dependent Claim
21 words
A construction in accordance with claim 1 including means for oscillating said washing roller axially while engaged by said wiper blade.
Claim 8
Dependent Claim
67 words
A construction in accordance with claim 1 wherein said delivery means comprises a tube for delivering metered cleaning fluid to said washing roller, said tube defining spaced apart openings along its length for distributing the fluid, and including means supporting said tube and said blade, and means for moving said supporting means whereby the tube and blade simultaneously are brought into and away from an operating position.
Claim 9
Dependent Claim
36 words
A construction in accordance with claim 7 including independent means supporting said washing roller, and lever means for moving the washer roller support to bring the roller into and out of engagement with said contaminated surface.
Claim 10
Dependent Claim
37 words
A construction in accordance with claim 8 wherein said lever means is also connected to said means supporting said tube and blade whereby the tube and blade are moved into operating position simultaneously with said washing roller.
Claim 11
Dependent Claim
21 words
A construction in accordance with claim 1 wherein said wiper blade comprises a strip of a substantially rigid, abrasive resistant, material.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |