US3788010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treatment of vertically disposed surfaces
Assignee: Individual
•
Filing: 1972-02-28
•
Granted: 1974-01-29
•
Expires: 1992-02-28
Abstract
Abstract A portable airless blasting head suitable for treatment of vertically disposed surfaces is described. The blast head comprises in combination an enclosure with an opening in one side adapted to contact the surface to be treated, projecting means within the enclosure for directing a stream of particulate abrasive material through the opening in the enclosure onto the surface to be treated, a resilient sealing means around the boundary of the opening in the opening of the enclosure which contacts the surface to be treated and retains the abrasive material in the apparatus, and a recirculation means to return the particulate abrasive material to the projecting means. Advantageously the apparatus of the present invention is selfpropelled.
Inventors
- 👤 J Goff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:26
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/02; B24C3/06; B24C3/062; B24C3/065
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
243 words
An apparatus for the treatment of surfaces with particulate abrasive material which is projected at high velocity against the surface comprising; a. an enclosure in the form of a housing having an opening in one wall; b. a projecting means within the enclosure for propelling a stream of particulate abrasive material through the opening in the enclosure; c. a resilient sealing means located on the wall of the enclosure having the opening and being adapted to contact the surface to establish a sealing relationship between the surface and the enclosure; d. a storage means for the particulate abrasive material which is adapted to supply the projecting means with the particulate abrasive material, said storage means defining an upper opening within said enclosure; e. a member defining a port in the upper portion of the enclosure for drawing air from the enclosure, said member being located such that the air from the enclosure is drawn across the opening defined by the storage hopper to the port; and f. a recirculation means adapted to collect the propelled particulate abrasive material from a lower portion of the enclosure, to convey the collected particulate abrasive material to the upper portion of the enclosure, and to deliver the particulate abrasive material at a delivery zone into the storage means, wherein the delivery zone is located such that the air from the enclosure which is drawn across the opening defined by storage hopper, is drawn across the delivery zone.
Claim 2
Independent Claim
243 words
An apparatus for the treatment of surfaces with particulate abrasive material which is projected at high velocity against the surface comprising; a. an enclosure in the form of a housing having an opening in one wall; b. a projecting means within the enclosure for propelling a stream of particulate abrasive material through the opening in the enclosure; c. a resilient sealing means located on the wall of the enclosure having the opening and being adapted to contact the surface to establish a sealing relationship between the surface and the enclosure; d. a storage means for the particulate abrasive material which is adapted to supply the projecting means with the particulate abrasive material, said storage means defining an upper opening within said enclosure; e. a member defining a port in the upper portion of the enclosure for drawing air from the enclosure, said member being located such that the air from the enclosure is drawn across the opening defined by the storage hopper to the port; and f. a recirculation means adapted to collect the propelled particulate abrasive material from a lower portion of the enclosure, to convey the collected particulate abrasive material to the upper portion of the enclosure, and to deliver the particulate abrasive material at a delivery zone into the storage means, wherein the delivery zone is located such that the air from the enclosure which is drawn across the opening defined by storage hopper, is drawn across the delivery zone.
Claim 3
Dependent Claim
37 words
The apparatus of claim 1 wherein the projecting means is a centrifugal throWing wheel and wherein the centrifugal throwing wheel is adapted to force circulation of air through the opening in the enclosure and toward the surface.
Claim 4
Dependent Claim
22 words
The apparatus in claim 1 which is self-propelled and includes therein a hoisting means to propel the apparatus in a vertical direction.
Claim 5
Dependent Claim
19 words
The apparatus of claim 3 which includes a horizontal drive means to propel the apparatus in a horizontal direction.
Claim 6
Dependent Claim
35 words
The apparatus of claim 1 wherein the opening in the enclosure in oblong and has a major axis which extends vertically and wherein the apparatus moves in a horizontal direction during treatment of the surface.
Claim 7
Dependent Claim
20 words
The apparatus of claim 5 wherein the resilient sealing means in a single resilient member extending outwardly from the enclosure.
Claim 8
Dependent Claim
28 words
The apparatus of claim 1 wherein the vacuum port on the enclosure is in communication with a fan means wherein the fan means is located on the enclosure.
Claim 9
Dependent Claim
13 words
The apparatus of claim 7 wherein the fan means is a centrifugal fan.
Claim 10
Dependent Claim
45 words
The apparatus of claim 1 wherein the recirculation means is a conveyor means comprising an endless belt having attached thereon at intervals scoop or bucket means which are adapted to collect the particulate abrasive material and deliver the particulate abrasive material to the storage means.
Claim 11
Independent Claim
247 words
An apparatus for the treatment of surfaces with particulate abrasive material which is projected at high velocity against the surface comprising: a. an enclosure in the form of a housing having an opening in one wall; b. a projecting means within the enclosure for propelling a stream of particulate abrasive material through the opening in the enclosure; c. a resilient sealing means located on the wall of the enclosure having the opening and being adapted to contact the surface to establish a sealing relationship between the surface and the enclosure; d. a storage means for the particulate abrasive material which is adapted to supply the projecting means with the particulate abrasive material, said storage means defining an upper opening within said enclosure, said upper opening having a portion which is coterminous with a wall of the enclosure; e. a member defining a port above the storage hopper in the wall of the enclosure which is coterminous with the upper opening of the storage hopper for drawing air from the enclosure; f. a recirculation means adapted to collect the propelled particulate abrasive material from a lower portion of the enclosure, to convey the collected particulate abrasive material to the upper portion of the enclosure, and to deliver the particulate abrasive material at a delivery zone into the storage means, wherein the delivery zone is located such that the air from the enclosure which is drawn across the opening defined by storage hopper, is drawn across the delivery zone.
Claim 12
Independent Claim
247 words
An apparatus for the treatment of surfaces with particulate abrasive material which is projected at high velocity against the surface comprising: a. an enclosure in the form of a housing having an opening in one wall; b. a projecting means within the enclosure for propelling a stream of particulate abrasive material through the opening in the enclosure; c. a resilient sealing means located on the wall of the enclosure having the opening and being adapted to contact the surface to establish a sealing relationship between the surface and the enclosure; d. a storage means for the particulate abrasive material which is adapted to supply the projecting means with the particulate abrasive material, said storage means defining an upper opening within said enclosure, said upper opening having a portion which is coterminous with a wall of the enclosure; e. a member defining a port above the storage hopper in the wall of the enclosure which is coterminous with the upper opening of the storage hopper for drawing air from the enclosure; f. a recirculation means adapted to collect the propelled particulate abrasive material from a lower portion of the enclosure, to convey the collected particulate abrasive material to the upper portion of the enclosure, and to deliver the particulate abrasive material at a delivery zone into the storage means, wherein the delivery zone is located such that the air from the enclosure which is drawn across the opening defined by storage hopper, is drawn across the delivery zone.
Claim 13
Dependent Claim
37 words
The apparatus of claim 10 wherein the projecting means is a centrifugal throwing wheel and wherein the centrifugal throwing wheel is adapted to force circulation of air through the opening in the enclosure and toward the surface.
Claim 14
Dependent Claim
30 words
The apparatus of claim 10 which is self-propelled and includes therein a hoisting means and a horizontal drive means to propel the apparatus in a vertical and a horizontal direction.
Claim 15
Dependent Claim
20 words
The apparatus of claim 10 wherein the resilient sealing means is a single resilient member extending outwardly from the enclosure.
Claim 16
Dependent Claim
45 words
The apparatus of claim 10 wherein the recirculation means is a conveyor means comprising an endless belt having attached thereon at intervals scoop or bucket means which are adapted to collect the particulate abrasive material and deliver the particulate abrasive material to the storage means.
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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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |