US3700389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spraying booth
Assignee: Aerocoat SA
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Filing: 1970-05-26
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Granted: 1972-10-24
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Expires: 1990-05-26
Abstract
Abstract A spraying booth for facilitating the recovery of the surplus of pulverulent material used to coat an object includes at the rear means for enabling it to communicate with an air extraction installation. The booth is open at the front to give access to the gun, and is provided with a plurality of rotatable blades which when rotated into a first transverse plane move air uniformly through the rear of the booth and when rotated into a second perpendicular position may be returned to the interior of the booth without disturbing the air in the booth.
Inventors
- 👤 Maurice Paul Wanner
- 👤 Neil Rudolph Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:06
CPC Classifications
B; B05; B05B; B05B16/00; B05B16/60; Y; Y10; Y10S; Y10S55/00; Y10S55/46
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
In a spraying booth of the type which includes an open front end by which spray material from a spray gun may enter said booth and have access to the interior of the booth and a rear end having means for communication with booth air extraction means, the improvement of a plurality of parallel blade elements mounted within said booth transverse to the direction of air flow from said open front through said rear end, and means for alternately translating said elements uniformly in a plane from the interior of said booth in a direction toward said rear end and thence back to the interior to substantially uniformly transport air within said booth from said booth through the rear end.
Claim 2
Dependent Claim
120 words
In a spraying booth of the type which includes an open front end by which spray material from a spray gun may enter said booth and have access to the interior of the booth and a rear end having means for communication with booth air extraction means, the improvement of a plurality of parallel blade elements mounted within said booth transverse to the direction of air flow from said open front through said rear end, and means for alternately translating said elements uniformly in a plane from the interior of said booth in a direction toward said rear end and thence back to the interior to substantially uniformly transport air within said booth from said booth through the rear end.
Claim 3
Dependent Claim
57 words
The improvement of claim 1 including means for rotating said blades from a substantially transverse plane whenever said blades are moved toward said rear end, said blades then being operative to uniformly transport air from said booth, to a position of less air transport when said blades are being moved from said rear end to the interior.
Claim 4
Dependent Claim
40 words
The improvement of claim 2 wherein the blades are suspended by spindles attached to a cross bar, said cross bar being connected to a rod which extends and is supported through a slot formed in the ceiling of the booth.
Claim 5
Dependent Claim
46 words
The improvement of claim 3 wherein the rod extending through the slot in the ceiling of the booth is connected to a trolley mounted on the ceiling and wherein the means for alternately translating the blades comprises a piston and cylinder device acting on the trolley.
Claim 6
Dependent Claim
89 words
The improvement of claim 3 wherein the means for rotating the blades includes a sliding rod mounted on the cross-bar and co-operating with each of the spindles to cause them to rotate through 90* with each sliding motion of the rod, said rod co-operating with two cams against which said rod abuts through the intermediary of an abutment, one of said cams being engaged at the end of each operative stroke of the blades, the other of said cams being engaged at the end of each return stroke thereof.
Claim 7
Dependent Claim
42 words
The improvement of claim 1 including a rear transverse wall for said booth, said wall including holes having a greater diameter towards the top of said rear transverse wall than the diameter of holes towards the bottom of the rear transverse wall.
Claim 8
Dependent Claim
22 words
The improvement of claim 1 wherein said booth includes a base made at least partially of conductive material which may be grounded.
Claim 9
Dependent Claim
37 words
The improvement of claim 1 wherein said means for alternately translating said blade elements includes means for moving said blade elements from the rear end to the interior faster than from said interior to said rear end.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |