US4042743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressible offset printing blanket
Assignee: P T Sub Inc
•
Filing: 1976-02-02
•
Granted: 1977-08-16
•
Expires: 1996-02-02
Abstract
Abstract A compressible offset printing blanket comprising a compressible cellular elastomeric layer or layers which contain resin microballoons in an elastomeric material. Preferably the compressible cellular elastomeric layer(s) is deposited from a layer of a cement of the uncured elastomer with which the resin microballoons have been admixed.
Inventors
- 👤 Charles E. Larson
- 👤 Richard T. Nojiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:57
CPC Classifications
B; B41; B41N; B41N10/00; B41N10/02; B41N10/04; B41N2210/00; B41N2210/04; B41N2210/14; Y; Y10; Y10S; Y10S428/00; Y10S428/909; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249972; Y10T428/25; Y10T428/254; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/335
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
70 words
A laminated printers' blanket comprising a layer having a printing surface, at least one strengthening layer, and a compressible layer of a cellular resilient polymer between the layer having the printing surface and the strengthening layer, the cells of the cellular resilient polymer including resinous hollow microspheres in the polymer matrix, each surface of said compressible layer having a substantially planar surface when said blanket is in a flat position.
Claim 2
Dependent Claim
70 words
A laminated printers' blanket comprising a layer having a printing surface, at least one strengthening layer, and a compressible layer of a cellular resilient polymer between the layer having the printing surface and the strengthening layer, the cells of the cellular resilient polymer including resinous hollow microspheres in the polymer matrix, each surface of said compressible layer having a substantially planar surface when said blanket is in a flat position.
Claim 3
Dependent Claim
14 words
A printers' blanket according to claim 1 in which the microspheres are frangible microspheres.
Claim 4
Dependent Claim
22 words
A printers' blanket according to claim 1 in which the polymer is selected from the group consisting of polychloroprene and nitrile rubber.
Claim 5
Dependent Claim
14 words
A printers' blanket according to claim 1 which comprises a plurality of strengthening layers.
Claim 6
Dependent Claim
38 words
A printers' blanket according to claim 1 which additionally comprises a thin layer of textile fabric between the compressible layer and the layer having the printing surface, which thin layer is in the form of an elastomeric veneer.
Claim 7
Dependent Claim
28 words
A printers' blanket according to claim 1 in which the microspheres are of a material selected from the group consisting of an organic thermoplastic material and phenolic resin.
Claim 8
Dependent Claim
22 words
The printers' blanket according to claim 5 wherein said thin layer has a thickness in the range of 0.125 to 0.25 mm.
References Cited (Backward Citations)
US2099024A
Cited
US3046172A
Cited
US3285799A
Cited
US3597297A
Cited
US3676282A
Cited
US3983287A
Cited
US3887750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |