US3642013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning hollow cylinders and the like
Assignee: Fritz Buser AG Maschinenfabrik
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Filing: 1970-06-01
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Granted: 1972-02-15
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Expires: 1990-06-01
Abstract
Abstract An apparatus for cleaning hollow cylindrical bodies and the like, especially the screens of rotary film or screen printing machines by spraying with a washing medium, the cleaning operation occurring with a substantially vertical position of such hollow cylindrical body. According to the invention, there is provided a cleaning compartment having a substantially vertical lengthwise axis, one wall of such cleaning compartment being downwardly tiltable in order to easily introduce the hollow cylinder body or the like into the cleaning compartment. A support structure or frame for mounting the hollow cylinder body and a spraying mechanism are secured to the inside of this tiltable wall.
Inventors
- 👤 Hans Thierstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:18
CPC Classifications
B; B41; B41F; B41F35/00; B41F35/003; B41F35/004; B41F35/001
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
An apparatus for cleaning hollow cylinders or the like, especially the printing screens of rotary screen printing machines, by spraying such with a washing liquid while the cleaning operation is undertaken with the hollow cylinder in substantially vertical position, comprising means defining a cleaning compartment having a substantially vertically extending lengthwise axis, said cleaning compartmenT including a wall member, means mounting said wall member for pivotable movement between a position closing said cleaning compartment into a position providing access thereto and facilitating introduction of the hollow cylinder to be cleaned into said cleaning compartment, said wall member having an inside wall surface, a support means for mounting the hollow body and spray means for said washing liquid secured to said inside wall surface, means for rotatably mounting said support means, said support means comprising a plurality of substantially parallel concentrically arranged lengthwise extending guides, said lengthwise extending guides being mounted at said pivotable wall member in substantial parallelism with respect to said inside wall surface and serving to center the hollow cylinder carried by said support means.
Claim 2
Independent Claim
177 words
An apparatus for cleaning hollow cylinders or the like, especially the printing screens of rotary screen printing machines, by spraying such with a washing liquid while the cleaning operation is undertaken with the hollow cylinder in substantially vertical position, comprising means defining a cleaning compartment having a substantially vertically extending lengthwise axis, said cleaning compartmenT including a wall member, means mounting said wall member for pivotable movement between a position closing said cleaning compartment into a position providing access thereto and facilitating introduction of the hollow cylinder to be cleaned into said cleaning compartment, said wall member having an inside wall surface, a support means for mounting the hollow body and spray means for said washing liquid secured to said inside wall surface, means for rotatably mounting said support means, said support means comprising a plurality of substantially parallel concentrically arranged lengthwise extending guides, said lengthwise extending guides being mounted at said pivotable wall member in substantial parallelism with respect to said inside wall surface and serving to center the hollow cylinder carried by said support means.
Claim 3
Dependent Claim
45 words
An apparatus for cleaning hollow cylinders or the like as defined in claim 1, wherein said spray means comprises at least one conduit arranged internally of said support means and equipped with a number of spray nozzles arranged along the length of said support means.
Claim 4
Dependent Claim
124 words
An apparatus for cleaning hollow cylinders or the like as defined in claim 1, wherein said spray means comprises at least one lengthwise extending conduit arranged laterally of said support means and approximately parallel to the lengthwise axis of said support means, a plurality of spray nozzles provided for said lengthwise extending conduit, the respective nozzle axis of said spray nozzles being arranged at an angle with respect to a plane containing the lengthwise axis of said lengthwise extending conduit so that the washing liquid jets emanating from said spray nozzles at least partially impinge tangentially upon the surface of a hollow cylinder to be cleaned which is carried and centered by said support means, to thereby place said hollow cylinder into rotational movement.
Claim 5
Dependent Claim
33 words
An apparatus for cleaning hollow cylinders or the like as defined in claim 1, further including observation window means provided for said pivotable wall member for the purpose of monitoring the cleaning operation.
Claim 6
Dependent Claim
34 words
An apparatus for cleaning hollow cylinders or the like as defined in claim 1, wherein said mounting means for said wall member mounts said wall member for pivotable movement about a substantially horizontal axis.
References Cited (Backward Citations)
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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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |