US5092239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum distribution apparatus and method for flat bed screen printing press
Assignee: American Screen Printing Equipment Co
•
Filing: 1990-05-11
•
Granted: 1992-03-03
•
Expires: 2010-05-11
Abstract
Abstract Screen printing apparatus having an inner stationary column having a vertical axis and an outer rotatable cylinder encircling the column and rotatable about the vertical axis. A rotatable turntable is mounted on the rotatable cylinder for movement between successive screen printing stations. The turntable mounts plural work supports having vacuum beds to retain workpieces. A vacuum ring is connected to a stationary vacuum means and has a slidable sealed contacting surface with the turntable to transfer vacuum to a plurality of conduits extending to each work support.
Inventors
- 👤 Henry J. Bubley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:09
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/14; B41F15/16; B41F15/18; B41F15/20; B41F15/08; B41F15/0863
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
An apparatus for screen printing, comprising: an inner stationary column having a vertical axis, an outer rotatable cylinder encircling the inner stationary column and rotatable about the vertical axis, a rotatable turntable mounted on the rotatable cylinder for turning in a circular path about the vertical axis to move between successive stations, a plurality of screen printing means for printing on an object at each of the successive stations, a plurality of work supports on the turntable spaced circumferentially about the turntable and having a vacuum bed for retaining a workpiece, a plurality of vacuum conduits extending from each vacuum bed toward the rotatable cylinder, a stationary vacuum means for inducing a vacuum, and a vacuum ring means having slidable sealed contacting surface with the turntable and being connected to the vacuum means to transfer the vacuum to the plurality of conduits on the turntable and thereby to the work supports.
Claim 2
Independent Claim
151 words
An apparatus for screen printing, comprising: an inner stationary column having a vertical axis, an outer rotatable cylinder encircling the inner stationary column and rotatable about the vertical axis, a rotatable turntable mounted on the rotatable cylinder for turning in a circular path about the vertical axis to move between successive stations, a plurality of screen printing means for printing on an object at each of the successive stations, a plurality of work supports on the turntable spaced circumferentially about the turntable and having a vacuum bed for retaining a workpiece, a plurality of vacuum conduits extending from each vacuum bed toward the rotatable cylinder, a stationary vacuum means for inducing a vacuum, and a vacuum ring means having slidable sealed contacting surface with the turntable and being connected to the vacuum means to transfer the vacuum to the plurality of conduits on the turntable and thereby to the work supports.
Claim 3
Dependent Claim
50 words
An apparatus in accordance with claim 1 in which the vacuum ring has a central plenum chamber trough and the turntable has a rotatable plate having a plurality of apertures aligned with the rotatable trough, and connected to the vacuum conduits, to transfer the reduced pressure to the vacuum conduits.
Claim 4
Dependent Claim
29 words
An apparatus in accordance with claim 2 in which a biasing means biases the vacuum ring against the rotatable plate to assist in the sliding seal being air tight.
References Cited (Backward Citations)
US3124065A
Cited
US3070212A
Cited
US3592320A
Cited
US3616942A
Cited
US4753162A
Cited
US4909142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-03 | 1995-09-02 | 1996-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-03 | 1999-09-02 | 2000-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-03 | 2003-09-02 | 2004-03-03 | $7700.00 | Window Closed / Lapsed |