US3850718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal patching plate and method of applying the same to damaged surfaces
Assignee: Individual
•
Filing: 1973-02-20
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Granted: 1974-11-26
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Expires: 1993-02-20
Abstract
Abstract A metal patching plate backed with a thin layer of high density foam which is double coated with pressure sensitive adhesive, one adhesive layer serving to bond the foam layer to the plate, while the other is covered with a protective liner. This patching plate is applied over a damaged area in a metal or other surface by first cleaning and otherwise preparing the latter and then stripping away the protective liner from the patching plate and applying the freshly exposed, adhesive-bearing surface of the foam layer over the damaged area. The resulting path is essentially permanent and permits the item of equipment being repaired to remain in service indefinitely.
Inventors
- 👤 S Trapani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:58
CPC Classifications
B; B29; B29C; B29C63/00; B23; B23P; B23P6/00; B23P6/04; B29C73/00; C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/26; C08; C08L; C08L75/00; C08L75/04; C09J2301/00; C09J2301/10; C09J2301/12; C09J2301/124; Y; Y10; Y10T; Y10T428/00; Y10T428/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A PATCHING STRUCTURE ADAPTED TO PATCH A DAMAGE PANEL MEMBER, SAID STRUCTURE COMPRISING A METAL PLATE HAVING A GUAGE SUCH AS TO RESIST DEFORMATION IN NORMAL USAGE AND BEING BACKED WITH A LAYER OF HIGH DENSITY FOAM, SAID FOAM BEING COATED ON EACH OF ITS TWO PRINCIPAL SIDES WITH A PRESSURE SENSITIVE ADHENSIVE LAYER, ONE OF SAID PRINCIPAL SIDES WITH A PRESSURE THE FOAM TO THE BACK OF THE PLATE AND THE OTHER ADHENSIVE LAYER BEING COVERED WITH A PROTECTIVE LINER CAPABLE OF BEING READILY STRIPPED AWAY FROM THE STRUCTURE.
Claim 2
Dependent Claim
90 words
A PATCHING STRUCTURE ADAPTED TO PATCH A DAMAGE PANEL MEMBER, SAID STRUCTURE COMPRISING A METAL PLATE HAVING A GUAGE SUCH AS TO RESIST DEFORMATION IN NORMAL USAGE AND BEING BACKED WITH A LAYER OF HIGH DENSITY FOAM, SAID FOAM BEING COATED ON EACH OF ITS TWO PRINCIPAL SIDES WITH A PRESSURE SENSITIVE ADHENSIVE LAYER, ONE OF SAID PRINCIPAL SIDES WITH A PRESSURE THE FOAM TO THE BACK OF THE PLATE AND THE OTHER ADHENSIVE LAYER BEING COVERED WITH A PROTECTIVE LINER CAPABLE OF BEING READILY STRIPPED AWAY FROM THE STRUCTURE.
Claim 3
Dependent Claim
31 words
The structure of claim 1 wherein the plate is fabricated of aluminum and the foam is made up of a polyurethane material having a thickness of from about 1/32 to inch.
Claim 4
Dependent Claim
49 words
A patched structure incorporating a damaged panel, a patching plate overlying the area of damage in the panel, and a layer of high density foam interposed between the damaged panel and the patching plate, said foam being adhered to the panel and the plate by a pressure sensiTive adhesive.
Claim 5
Dependent Claim
49 words
A patched structure incorporating a damaged panel, a patching plate overlying the area of damage in the panel, and a layer of high density foam interposed between the damaged panel and the patching plate, said foam being adhered to the panel and the plate by a pressure sensiTive adhesive.
Claim 6
Dependent Claim
67 words
A method of repairing a damaged panel which comprises freeing the areas adjacent to the damage in said panel of dirt and grease and applying over said areas the patching structure of claim 1 from which the protective liner has been stripped away, the adhesive layer exposed by removing said liner being pressed into tight engagement with the cleaned panel to cover the area of damage therein.
Claim 7
Dependent Claim
33 words
The method of claim 4 wherein the damaged panel is comprised of steel or aluminum and the patching structure is comprised of aluminum backed with a thin layer of high density polyurethane foam.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |