US3897191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting member for printing plate and apparatus of making same
Assignee: Container Graphics Corp
•
Filing: 1974-04-19
•
Granted: 1975-07-29
•
Expires: 1994-04-19
Abstract
Abstract A mounting member for a printing plate and a method of making same are provided. The mounting member is made of a plastic sheet material which is solvent resistant, strong, dimensionally stable, conforms truly to the printing plate cylinder, and is of uniform thickness. A leading edge of the mounting member is turned back to form a structurally integral lip thereon which is readily connected to a flange on a printing plate cylinder. The integral lip is inexpensive to produce, requires no separate parts, and cannot loosen or pull off of the mounting member. The mounting member can be readily made by means of a table-top, heated, bending and forming apparatus through which the mounting member can be moved to bend and form the lip quickly and inexpensively.
Inventors
- 👤 Philip G Saunders
- 👤 Neil M Waterbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:30
CPC Classifications
B; B41; B41F; B41F27/00; B41F27/12; B41F27/1287; B41F27/1262
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
Apparatus for making a mounting sheet for mounting a printing plate on a printing cylinder, said mounting sheet having a structurally-integral lip, said apparatus comprising means for supporting a heat-softenable plastic sheet of a given size and shape and having at least one straight edge, an entry zone having means for receiving and positioning the edge of the sheet, at least one heating and forming zone having means for heating the edge of the sheet and for bending the edge upwardly away from the plane of the sheet and rearwardly in a direction substantially parallel to the plane of the sheet to form the structurallyintegral lip, and a cooling zone having means for cooling the bent edge of the sheet while maintaining the bent edge in its bent position.
Claim 2
Dependent Claim
129 words
Apparatus for making a mounting sheet for mounting a printing plate on a printing cylinder, said mounting sheet having a structurally-integral lip, said apparatus comprising means for supporting a heat-softenable plastic sheet of a given size and shape and having at least one straight edge, an entry zone having means for receiving and positioning the edge of the sheet, at least one heating and forming zone having means for heating the edge of the sheet and for bending the edge upwardly away from the plane of the sheet and rearwardly in a direction substantially parallel to the plane of the sheet to form the structurallyintegral lip, and a cooling zone having means for cooling the bent edge of the sheet while maintaining the bent edge in its bent position.
Claim 3
Dependent Claim
17 words
Apparatus according to claim 1 characterized by means for insulAting said heating means from said cooling means.
Claim 4
Dependent Claim
44 words
Apparatus according to claim 1 characterized by a hold-down bar extending substantially the length of said heating means and said cooling means, and adjustable means for supporting said hold-down bar and for moving said hold-down bar toward and away from said sheet supporting means.
Claim 5
Dependent Claim
26 words
Apparatus according to claim 1 characterized by an electric heating element for said heating means, and thermostat for maintaining said heating means at a selected temperature.
References Cited (Backward Citations)
US66172A
Cited
US217007A
Cited
US351452A
Cited
US1203090A
Cited
US1909930A
Cited
US2014150A
Cited
US3001569A
Cited
US3339005A
Cited
US3509599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |