Patent US3737940A successfully refreshed from Google Patents.
US3737940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus for offset printing machines
Assignee: Individual
•
Filing: 1971-12-06
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Granted: 1973-06-12
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Expires: 1991-12-06
Abstract
Abstract A roller-shaped cleaning tool for a rotating cylinder surface in an offset press is rotatably mounted in a housing that is open in front. The cleaning tool is presented to the cylinder surface through the opening in the housing. The cleaning tool produces an atmosphere of atomized cleaning liquid and washed-off dirt in the housing and this atmosphere is drawn off through an outlet which is connected to a source of sub-atmospheric pressure.
Inventors
- 👤 H Moestue
- 👤 C Moestue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:58
CPC Classifications
B; B41; B41F; B41F35/00; B41F35/02; B41F35/06; B41P; B41P2235/00; B41P2235/10; B41P2235/20; B41P2235/22; B41P2235/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
142 words
Cleaning apparatus for a cylinder surface such as a printing plate and/or a blanket cylinder in offset printing machines, comprising a housing having an open front end adapted to be mounted adjacent the cylinder thereby presenting a narrow gap therewith, a roller-type cleaning tool operatively mounted for rotation in said housing and extending outwardly of said open end into cleaning engagement with said cylinder means for supplying cleaning fluid to said cylinder surface and said cleaning tool, means cooperating with said cleaning tool for atomizing the cleaning fluid supplied thereto and the dirt washed off the cylinder by said tool, an outlet mounted on said housing in communication with said open front and thereof, suction means interconnected with said outlet for drawing air, together with the atomized fluid and washed-off dirt, into said housing from the narrow gap and through said outlet.
Claim 2
Dependent Claim
142 words
Cleaning apparatus for a cylinder surface such as a printing plate and/or a blanket cylinder in offset printing machines, comprising a housing having an open front end adapted to be mounted adjacent the cylinder thereby presenting a narrow gap therewith, a roller-type cleaning tool operatively mounted for rotation in said housing and extending outwardly of said open end into cleaning engagement with said cylinder means for supplying cleaning fluid to said cylinder surface and said cleaning tool, means cooperating with said cleaning tool for atomizing the cleaning fluid supplied thereto and the dirt washed off the cylinder by said tool, an outlet mounted on said housing in communication with said open front and thereof, suction means interconnected with said outlet for drawing air, together with the atomized fluid and washed-off dirt, into said housing from the narrow gap and through said outlet.
Claim 3
Dependent Claim
16 words
Cleaning apparatus as claimed in claim 1, wherein said cleaning tool comprises a bristle brush roller.
Claim 4
Dependent Claim
34 words
Apparatus as claimed in claim 2, wherein said means cooperating with said tool comprises an impact rod mounted adjacent said roller and bearing against the bristles thereof so as to atomize the cleaning liquid.
Claim 5
Dependent Claim
14 words
Apparatus as claimed in claim 1, wherein said cleaning tool comprises a sponge roller.
Claim 6
Dependent Claim
44 words
Apparatus as claimed in claim 4, wherein said cleaning tool further comprises a rotatably mounted squeeze roller for compressing the sponge in order to remove cleaning liquid therefrom, said liquid being atomized by being thrown out from the sponge roller and the squeeze roller.
Claim 7
Dependent Claim
32 words
Apparatus as claimed in claim 1, wherein said supply means comprises spray nozzles for supplying cleaning liquid to the cylinder surface, said liquid being partly atomized by impact against the cylinder surface.
Claim 8
Dependent Claim
23 words
Apparatus as claimed in claim 6 wherein said supply means further comprises additional spray nozzles for supplying cleaning fluid to said cleaning tool.
References Cited (Backward Citations)
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US2382089A
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US3257940A
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US3545381A
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US3656200A
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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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |