US3585930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device on rotary screen printing machines
Assignee: Individual
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Filing: 1968-09-23
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Granted: 1971-06-22
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Expires: 1988-09-23
Abstract
Abstract A device on rotary screen printing machines for longitudinally tensioning the rotary screens. The screen holders of at least one machine side being adjustable in parallel to the rotary screen axis wherein an adjustable device for the movable screens is provided. The adjustable device comprising stopping means, the stopping means limiting the movement of the screen holder to a predetermined extent upon release.
Inventors
- 👤 Walter Bohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:03
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/14; B41F15/34; B41F15/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
157 words
Apparatus on a rotary screen printing machine for longitudinally tensioning and slackening a rotary screen thereof comprising a machine frame, a pair of screen holders mounted on said frame, the ends of said rotary screen being supported by said screen holders, means connected to one of said screen holders to make it movable and adjustable in parallel to the screen axis to cause tensioning and slackening of the screen, a motor operatively connected to said movable screen holder and positively driven to cause movement thereof for tensioning and slackening the screen, and stopping means for limiting the movement of said movable screen holder to a predetermined extend upon slackening, said stopping means comprising a switching element with means supporting same and operatively connecting it with said motor to be moved thereby, and a limit switch electrically connected to said motor, said switching element being engageable with said limit switch upon slackening the screen to control said motor.
Claim 2
Dependent Claim
157 words
Apparatus on a rotary screen printing machine for longitudinally tensioning and slackening a rotary screen thereof comprising a machine frame, a pair of screen holders mounted on said frame, the ends of said rotary screen being supported by said screen holders, means connected to one of said screen holders to make it movable and adjustable in parallel to the screen axis to cause tensioning and slackening of the screen, a motor operatively connected to said movable screen holder and positively driven to cause movement thereof for tensioning and slackening the screen, and stopping means for limiting the movement of said movable screen holder to a predetermined extend upon slackening, said stopping means comprising a switching element with means supporting same and operatively connecting it with said motor to be moved thereby, and a limit switch electrically connected to said motor, said switching element being engageable with said limit switch upon slackening the screen to control said motor.
Claim 3
Dependent Claim
64 words
Apparatus as defined in claim 1 wherein the means for making said screen holder movable and adjustable include at least one shaft operatively connected to said motor and to said one holder so that said shaft is rotatable in the opposite directions to effect tensioning and slackening of the screen, said switching element being connected to said shaft by means of a slipping connection.
Claim 4
Dependent Claim
53 words
Apparatus as defined in claim 2 wherein a stop member is mounted externally of said shaft to engage the switching element as said element is moved in a direction away from said switch, thereby limiting the field of movement of said switching element, and said shaft of said switching element continues its rotation.
Claim 5
Dependent Claim
18 words
Apparatus as defined in claim 3 wherein said stop member is eccentrically pivotally mounted on a different shaft.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |