US3769753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic car sand blaster
Assignee: Individual
•
Filing: 1972-03-16
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Granted: 1973-11-06
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Expires: 1992-03-16
Abstract
Abstract An apparatus is disclosed in which a mixture of a highly volatile chemical solvent and an abrasive is sprayed onto the surface of an automobile at an obilique angle. The abrasive removes the paint without chipping and roughs up the surface while the chemical solvent removes film and dirt thereby enabling the surface of the automobile to receive a new coat of paint. One embodiment of the apparatus is disclosed in which spraying devices are mounted around a platform upon which an automobile may rest. The platform has a drain for carrying away solvent and abrasive after it runs off the body of the car. Conveyors are employed to recycle the still useable materials to reservoirs from which they initially came.
Inventors
- 👤 H Fleischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:05
CPC Classifications
B; B24; B24C; B24C7/00; B24C7/0084; B24C3/00; B24C3/08; B24C3/10; B24C3/12; B24C5/00; B24C5/02; B24C5/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
138 words
An apparatus for preparing an object having a painted metal surface for repainting including: means for holding said object with said surface in a predetermined position; a source of abrasive; a source of a volatile chemical solvent: mixing means for mixing abrasive from said source of abrasive and volatile chemical solvent from said source of chemical solvent to provide a preparing mixture, said mixing means comprising means for gravity feeding said abrasive along a path and means for spraying said volatile solvent across said paTh; and directing means for directing a stream of said preparing mixture onto said surface at any oblique angle, said directing means comprising a source of compressed air; a nozzle mounted adjacent to said surface; and means for blowing compressed air from said source of compressed air through said preparing mixture at said nozzle.
Claim 2
Independent Claim
138 words
An apparatus for preparing an object having a painted metal surface for repainting including: means for holding said object with said surface in a predetermined position; a source of abrasive; a source of a volatile chemical solvent: mixing means for mixing abrasive from said source of abrasive and volatile chemical solvent from said source of chemical solvent to provide a preparing mixture, said mixing means comprising means for gravity feeding said abrasive along a path and means for spraying said volatile solvent across said paTh; and directing means for directing a stream of said preparing mixture onto said surface at any oblique angle, said directing means comprising a source of compressed air; a nozzle mounted adjacent to said surface; and means for blowing compressed air from said source of compressed air through said preparing mixture at said nozzle.
Claim 3
Dependent Claim
34 words
The apparatus as defined in claim 1 also including: means located below said object for collecting abrasive; and means for returning collected abrasive from said collecting means to said source of abrasive for reuse.
Claim 4
Dependent Claim
31 words
The apparatus as defined in claim 2 also including a plurality of sources of abrasive, sources of volatile chemical solvent, mixing means and directing means located adjacent to said collecting means.
Claim 5
Dependent Claim
48 words
The apparatus as defined in claim 1 in which said directing means includes a plurality of scoops for catching predetermined amounts of said preparing mixture; said scoops being arranged vertically with respect to one another, the higher of said scoops being larger than the lower of said scoops.
Claim 6
Dependent Claim
36 words
The apparatus of claim 1 wherein said means for directing a stream of said preparing mixture onto said surface at an oblique angle includes nozzle means causing said preparing mixture to form a flat V-shaped stream.
Claim 7
Dependent Claim
23 words
The apparatus of claim 5 wherein said nozzle means includes a pair of flat nozzles pivotally connected together to form a variable V-shape.
Claim 8
Dependent Claim
19 words
The apparatus of claim 2 including means for collecting and recycling evaporated solvent to return it to its source.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |