US4761003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed sheet removal assembly
Assignee: Koenig and Bauer AG
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Filing: 1987-07-30
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Granted: 1988-08-02
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Expires: 2007-07-30
Abstract
Abstract A printed sheet removal assembly selectively disengages sheets from the grippers of a sheet transport by actuation of a pivotable switch lever that moves an axially slidable rotating switch shaft. A two step switch cylinder is carried by the switch shaft and has adjacent rolling surfaces. One of these rolling surfaces is cam shaped and causes a control roller to move a gripper opening segment into the path of a sheet gripper. The switch cylinder is spring loaded and returns to its switched off position once the switch lever has been released.
Inventors
- 👤 Claus D. Barrois
- 👤 Philipp A. Dieterich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:04
CPC Classifications
B; B41; B41F; B41F21/00; B41F21/08; B41F13/00; B41F13/54; B41F13/70; B65; B65H; B65H29/00; B65H29/58; B65H29/585
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
233 words
A printed sheet removal assembly for the selective removal of one or more sheets from a sheet delivery of a sheet fed rotary printing machine, the sheet delivery including sheet grippers having cam controller gripper opening means and gripper transport chains, said printed sheet removal assembly comprising: a drive wheel rotatably secured in a side frame of the sheet delivery and being drivable by the gripper transport chain, said drive wheel including a central bore; an axially slidable switch shaft carried in said wheel bore and being rotatable with said drive wheel; a gate type gear shift secured to a first end of said switch shaft and a limit disk secured to a second end of said switch shaft; a two stepped axially slidable spring biased switch cylinder carried on said switch shaft and rotatable therewith, said switch cylinder being positioned intermediate said drive wheel and said limit disk; a compression spring carried on said axially shiftable switch shaft intermediate said gate-type gear shift and said drive wheel; and a switch lever pivotably attached to said side frame and engaging said gate-type gear shift, said switch cylinder being in rolling contact with a control roller carried by a pivotably supported gripper opening means whereby axial movement of said switch shaft in response to pivotal movement of said switch lever will operate said gripper opening means to remove a sheet from the sheet delivery.
Claim 2
Dependent Claim
233 words
A printed sheet removal assembly for the selective removal of one or more sheets from a sheet delivery of a sheet fed rotary printing machine, the sheet delivery including sheet grippers having cam controller gripper opening means and gripper transport chains, said printed sheet removal assembly comprising: a drive wheel rotatably secured in a side frame of the sheet delivery and being drivable by the gripper transport chain, said drive wheel including a central bore; an axially slidable switch shaft carried in said wheel bore and being rotatable with said drive wheel; a gate type gear shift secured to a first end of said switch shaft and a limit disk secured to a second end of said switch shaft; a two stepped axially slidable spring biased switch cylinder carried on said switch shaft and rotatable therewith, said switch cylinder being positioned intermediate said drive wheel and said limit disk; a compression spring carried on said axially shiftable switch shaft intermediate said gate-type gear shift and said drive wheel; and a switch lever pivotably attached to said side frame and engaging said gate-type gear shift, said switch cylinder being in rolling contact with a control roller carried by a pivotably supported gripper opening means whereby axial movement of said switch shaft in response to pivotal movement of said switch lever will operate said gripper opening means to remove a sheet from the sheet delivery.
Claim 3
Dependent Claim
41 words
The printed sheet removal assembly of claim 1 further including a sheet delivery box positioned to receive the selectively removed sheet, said delivery box including a pivotable sheet guide connected to said gripper opening means by at least one connecting rod.
Claim 4
Dependent Claim
20 words
The sheet removal assembly of claim 1 wherein said switch cylinder includes first and second control roller contacting roller surfaces.
Claim 5
Dependent Claim
23 words
The sheet removal assembly of claim 1 wherein said switch lever is pivotably attached to said side frame by a generally horizontal holder.
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) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |