US3112698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing machines
Assignee: AB Dick Co
•
Filing: 1961-01-03
•
Granted: 1963-12-03
•
Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 Francis K Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:36
CPC Classifications
B; B41; B41F; B41F27/00; B41F27/12; B41F27/1212; B41F27/1218; B41F27/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A DUPLICATING MACHINE, A MASTER CYLINDER COMPRISING A CYLINDRICAL BODY HAVING AN ARCUATE OUTER SURFACE ADAPTED TO SERVE AS A SUPPORT FOR A MASTER SHEET, MEANS AFFORDING A STATIONARY AXIS OF ROTATION FOR SAID CYLINDER, THE OUTER SURFACE OF SAID CYLINDRICAL BODY HAVING A PLURALITY OF AXIALLY SPACED GROOVES EXTENDED ABOUT THE PERIPHERY THEREOF, SAID GROOVES BEING BOTTOMED WITHIN THE BODY OF THE CYLINDER BUT OPENING AT THE OUTER SURFACE THEREOF, SAID GROOVES HAVING ENDS THAT ARE BLOCKED AND ENDS THAT COMMUNICATE WITH A MANIFOLD IN THE MASTER CYLINDER, MEANS FOR ESTABLISHING NEGATIVE PRESSURE IN SAID MANIFOLD TO BE COMMUNICATED TO SAID GROOVES AND INCLUDING A SUCTION LINE THROUGH SAID AXIS MEANS, A PORTED HOUSING ROTATABLE WITH THE MASTER CYLINDER AND ROTATABLY SUPPORTED ON SAID AXIS WITH THE PORT THEREOF IN COMMUNI-
Claim 2
Dependent Claim
133 words
IN A DUPLICATING MACHINE, A MASTER CYLINDER COMPRISING A CYLINDRICAL BODY HAVING AN ARCUATE OUTER SURFACE ADAPTED TO SERVE AS A SUPPORT FOR A MASTER SHEET, MEANS AFFORDING A STATIONARY AXIS OF ROTATION FOR SAID CYLINDER, THE OUTER SURFACE OF SAID CYLINDRICAL BODY HAVING A PLURALITY OF AXIALLY SPACED GROOVES EXTENDED ABOUT THE PERIPHERY THEREOF, SAID GROOVES BEING BOTTOMED WITHIN THE BODY OF THE CYLINDER BUT OPENING AT THE OUTER SURFACE THEREOF, SAID GROOVES HAVING ENDS THAT ARE BLOCKED AND ENDS THAT COMMUNICATE WITH A MANIFOLD IN THE MASTER CYLINDER, MEANS FOR ESTABLISHING NEGATIVE PRESSURE IN SAID MANIFOLD TO BE COMMUNICATED TO SAID GROOVES AND INCLUDING A SUCTION LINE THROUGH SAID AXIS MEANS, A PORTED HOUSING ROTATABLE WITH THE MASTER CYLINDER AND ROTATABLY SUPPORTED ON SAID AXIS WITH THE PORT THEREOF IN COMMUNI-
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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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |