US4420511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coating an object
Assignee: Atlas Copco AB
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Filing: 1979-06-13
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Granted: 1983-12-13
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Expires: 1999-06-13
Abstract
Abstract A novel method for coating an object with a thixotropic material, comprising application of the material on the object to be coated and exposing the object and thereby the thixotropic material applied thereon to vibrational or repeated impact forces so as to temporarily liquidize the coating material. By the disclosed method it is possible to obtain an improved thixotropic material coverage of an object, particularly as regards narrow, difficult-to-reach areas such as gaps and crevices of closed cavities. A suitable field of use for this method is anti-corrosion treatment of car bodies.
Inventors
- 👤 Kurt H. Liedberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:36
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/22; B05D3/00; B05D3/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
A method for coating at least one surface of an object with a liquid coating material having thixotropic properties comprising spraying said coating material on a major portion of said at least one surface to partially coat said at least one surface, applying mechanical vibrations or repeated impact forces to said at least one surface which is partially coated with said coating material to decrease the viscosity of said material coated on said major portion of said at least one surface so that said material flows over the uncoated portions of said at least one surface, and then stopping said application of mechanical vibrations or repeated impact forces to cause said coating material to gel and cease to flow.
Claim 2
Independent Claim
119 words
A method for coating at least one surface of an object with a liquid coating material having thixotropic properties comprising spraying said coating material on a major portion of said at least one surface to partially coat said at least one surface, applying mechanical vibrations or repeated impact forces to said at least one surface which is partially coated with said coating material to decrease the viscosity of said material coated on said major portion of said at least one surface so that said material flows over the uncoated portions of said at least one surface, and then stopping said application of mechanical vibrations or repeated impact forces to cause said coating material to gel and cease to flow.
Claim 3
Dependent Claim
83 words
The method of claim 1 wherein said at least one surface of said object which is being coated comprises the interior walls of a hollow body on which the coating material is applied by spraying through one or more injection openings in said hollow body, and wherein said mechanical vibrations or repeated impact forces are applied to the outside of said hollow body and wherein said hollow body transmits said mechanical vibrations or repeated impact forces to the said at least one surface.
Claim 4
Dependent Claim
25 words
The method of claim 1 or claim 2 wherein said mechanical vibrations or repeated impact forces are applied while said coating material is being applied.
Claim 5
Dependent Claim
31 words
The method of claim 1 or claim 2 wherein said mechanical vibrations or repeated impact forces are applied after said coating material has been applied to said at least one surface.
Claim 6
Dependent Claim
29 words
The method of claim 3 wherein said mechanical vibrations or repeated impact forces are also applied after said coating material has been applied to said at least one surface.
References Cited (Backward Citations)
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Cited
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Cited
US3227575A
Cited
US3513016A
Cited
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Cited
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Cited
US4025664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |