US4067737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of applying protective coating
Assignee: Individual
•
Filing: 1976-12-02
•
Granted: 1978-01-10
•
Expires: 1996-12-02
Abstract
Abstract A clear resin protective coating is applied to a picture by spreading liquid resin over the picture surface from one edge using a spreader sheet under tension which is carried by a frame hinged parallel to one edge of the picture, so that a `wedge` of resin is advanced over the picture surface as the frame is lowered, forming upon curing a clear protective layer.
Inventors
- 👤 Anthony Vincent Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:57
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/06; B; B05; B05C; B05C3/00; B05D; B05D1/00; B05D1/40; B05D1/42; B41; B41M; B41M7/00; B41M7/0027; B44; B44D; B44D7/00; G03C; G03C11/00; G03C11/08; B05D5/00; B05D5/06; B05D5/061; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
Process for applying a protective coating to the surface of a picture comprising the steps of: applying a clear synthetic resin in liquid state to the surface of the picture adjacent one edge thereof, spreading the liquid resin evenly and without the formation of bubbles or occlusions over the said picture surface from the said edge by pressing a flexible spreader sheet under tension over the surface progressively from the said edge, the surface of the spreader sheet which contacts the resin being such that the resin does not adhere thereto, curing the resin, and removing the sheet to leave a hard, clear protective layer of resin on the picture surface.
Claim 2
Dependent Claim
111 words
Process for applying a protective coating to the surface of a picture comprising the steps of: applying a clear synthetic resin in liquid state to the surface of the picture adjacent one edge thereof, spreading the liquid resin evenly and without the formation of bubbles or occlusions over the said picture surface from the said edge by pressing a flexible spreader sheet under tension over the surface progressively from the said edge, the surface of the spreader sheet which contacts the resin being such that the resin does not adhere thereto, curing the resin, and removing the sheet to leave a hard, clear protective layer of resin on the picture surface.
Claim 3
Dependent Claim
39 words
Process as defined in claim 1, in which the sheet is progressively pressed over the resin coating by advancing a roller over the sheet, the axis of the roller being substantially parallel to the said edge of the picture.
Claim 4
Dependent Claim
18 words
Process as defined in claim 1, in which the synthetic resin is admixed with a chemical hardening agent.
Claim 5
Dependent Claim
17 words
Process as defined in claim 1, in which the spreader sheet comprises a flexible clear plastics film.
Claim 6
Dependent Claim
59 words
Process as defined in claim 1, in which the picture to be coated, prior to the application of the liquid synthetic resin, is mounted upon a rigid backing member and its surface sealed by the application thereto of a coating of clear sealant material which is allowed to harden before the liquid resin is spread on the sealed surface.
Claim 7
Dependent Claim
28 words
Process as defined in claim 1, in which a release agent is applied to the surface of the spreader sheet which comes into contact with the synthetic resin.
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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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |