Patent US2643545A successfully refreshed from Google Patents.
Patent US404501A successfully refreshed from Google Patents.
Patent US3672292A successfully refreshed from Google Patents.
US3672292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blast-room for abrasive blasting system
Assignee: Vacu Blast Corp
•
Filing: 1970-09-22
•
Granted: 1972-06-27
•
Expires: 1990-09-22
Abstract
Abstract A blast-room for an abrasive blasting system having a floor with closeable scavenging ducts and end or cross draft ventilation. The floor is comprised of a plurality of parallel floor members that form elongated troughs or valleys with sloped sides to trap falling abrasive and waste particles. Between each pair of adjacent floor members and extending below their lower edges is a duct member having an elongated opening which is periodically closeable by a controllable closure means such as an inflatable valve member that provides an air-tight seal. At one end of the floor the ducts have small permanent openings to permit air to enter and their other ends are connected to a suction fan capable of creating a conveying air velocity in the ducts when the closure means has closed. During operation of the blast-room the closure means remains open for a period of time while a quantity of abrasive and waste particles are collected in the conveying ducts, then periodically the duct closure means are closed so that the conveying air can remove the particles from the ducts.
Inventors
- 👤 Ted A Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:25
CPC Classifications
B; B24; B24C; B24C9/00; B24C9/003
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
133 words
In an abrasive blasting system that provides for the surface treatment of articles and the recovery of the abrasive particles used in the blasting operation, the combination comprising: a blast-room having side walls and an access door; a floor for said blast-room including means forming a series of elongated recesses, means extending below said recesses forming a series of air ducts, means forming an elongated opening between each said recess and a said air duct so that spent abrasive trapped in said recesses can flow into the ducts, and controllable closure means for periodically closing said openings between said recesses and their air ducts; and means operable when said closure means have closed said openings for causing air to flow through said ducts at a rate sufficient to convey abrasive material from them.
Claim 2
Dependent Claim
133 words
In an abrasive blasting system that provides for the surface treatment of articles and the recovery of the abrasive particles used in the blasting operation, the combination comprising: a blast-room having side walls and an access door; a floor for said blast-room including means forming a series of elongated recesses, means extending below said recesses forming a series of air ducts, means forming an elongated opening between each said recess and a said air duct so that spent abrasive trapped in said recesses can flow into the ducts, and controllable closure means for periodically closing said openings between said recesses and their air ducts; and means operable when said closure means have closed said openings for causing air to flow through said ducts at a rate sufficient to convey abrasive material from them.
Claim 3
Dependent Claim
22 words
The system as described in claim 1 including means for causing a constant cross draft through said blast-room for removing dust therefrom.
Claim 4
Dependent Claim
63 words
The system as described in claim 2 wherein said latter means for causing a cross draft comprises a series of inlets to ambient air on one side wall of the blast-room, outlet means on the opposite side of the blast-room from said inlets, a dust collector means having a suction fan, and duct means interconnecting said outlet means with said dust collecting means.
Claim 5
Dependent Claim
59 words
The system as described in claim 1 wherein said recesses and said air ducts are elongated and said closure means comprises an elongated inflatable sealing member for each said opening between a recess and an air duct, and controllable air pressure means for inflating said sealing members to close said openings, when said air ducts are to be scavenged.
Claim 6
Dependent Claim
34 words
The system as described in claim 4 including valve means connected to said air pressure means and timer means for operating said valve means and thereby actuating said sealing members at a predetermined rate.
Claim 7
Dependent Claim
38 words
The system as described in claim 1 wherein said means for causing air flow through said ducts comprises a suction fan on a reclaimer means providing a suction sufficient to create a conveying air velocity through said ducts.
Claim 8
Dependent Claim
133 words
A blast-room for an abrasive blasting system including a ducted floor structure for recovering abrasive particles used in the surface treatment or articles in the room, comprising: side and end walls extending upwardly from said floor structure; means on said floor forming trough-like recesses with sloping sides; duct means extending below each trough-like recess with an elongated opening between each recess and its duct means to allow spent abrasive and waste particles to fall into the duct means; and elongated movable sealing means extending along each said opening for periodically closing said opening between each said recess and its duct means; and means connected to one side of said floor structure for conveying air through the duct means lengthwise when said openings are cleared to remove the collected abrasive and waste particles therein.
Claim 9
Dependent Claim
133 words
A blast-room for an abrasive blasting system including a ducted floor structure for recovering abrasive particles used in the surface treatment or articles in the room, comprising: side and end walls extending upwardly from said floor structure; means on said floor forming trough-like recesses with sloping sides; duct means extending below each trough-like recess with an elongated opening between each recess and its duct means to allow spent abrasive and waste particles to fall into the duct means; and elongated movable sealing means extending along each said opening for periodically closing said opening between each said recess and its duct means; and means connected to one side of said floor structure for conveying air through the duct means lengthwise when said openings are cleared to remove the collected abrasive and waste particles therein.
Claim 10
Dependent Claim
105 words
The blast-room as described in claim 7 wherein said recesses are formed from a plurality of floor members forming elongated troughs having generally a triangular shaped cross section; means for supporting said floor members in a parallel spaced apart arrangement; means forming an air duct between adjacent, spaced apart floor members including a sloping cover member forming a narrow elongated opening into the air duct below and extending along said recess; an elongated, inflatable sealing member mounted on said cover member and extendable, when inflated, to engage the opposite side of the duct means and thereby seal said elongated opening for substantially its entire length.
Claim 11
Dependent Claim
110 words
The blast-room as described in claim 7 wherein said recesses comprise a plurality of floor members forming elongated troughs having generally a triangular shaped cross section; a perforated flooring means extending over and supported by said floor members; an elongated deflector member mounted in each trough having an inverted V-shaped cross section and, forming a duct below, said deflector member having lower edges spaced from adjacent floor members to form openings to the duct; elongated inflatable sealing members attached to opposite sides of said deflector member, said sealing members each having an outer movable portion that engages and seals against the adjacent floor member when the sealing member is actuated.
Claim 12
Dependent Claim
90 words
The blast-room as described in claim 7 wherein said recesses comprise a plurality of floor members forming elongated troughs having generally a triangular shaped cross section, said duct means being located between adjacent said floor members and including cover means having a central, elongated opening into each said duct; support means in each said trough located directly above said duct opening; and an elongated inflatable sealing member attached to said support means for temporarily closing said opening when abrasive material is to be conveyed by air from the duct below.
Claim 13
Dependent Claim
117 words
In a blast-room for an abrasive blasting system including side walls and a roof, a ducted floor between the side walls for recovering spent abrasive particles from operating within the blast room, said floor comprising: a plurality of floor members forming trough-like recesses with sloping sides and an elongated cavity along the bottom of each recess; a removable duct member within each said cavity with an elongated opening provided a passage from each recess to its duct member for spent abrasive particles that fall into the recess; and elongated movable sealing means for periodically closing each said opening so that conveying air can flow through said duct members lengthwise to remove abrasive and waste particles collected therein.
Claim 14
Dependent Claim
117 words
In a blast-room for an abrasive blasting system including side walls and a roof, a ducted floor between the side walls for recovering spent abrasive particles from operating within the blast room, said floor comprising: a plurality of floor members forming trough-like recesses with sloping sides and an elongated cavity along the bottom of each recess; a removable duct member within each said cavity with an elongated opening provided a passage from each recess to its duct member for spent abrasive particles that fall into the recess; and elongated movable sealing means for periodically closing each said opening so that conveying air can flow through said duct members lengthwise to remove abrasive and waste particles collected therein.
Claim 15
Dependent Claim
66 words
The blast-room floor as described in claim 11 wherein said floor members have vertical walls with pairs of floor members forming the cavity between them, a said duct member within each said cavity being made of sheet metal and bent to form said opening along one side thereof, said sealing means comprising an inflatable, flexible sealing member which is movable upon inflation to close said opening.
Claim 16
Dependent Claim
69 words
The blast-room floor as described in claim 11 wherein said floor members are in pairs and have vertical wall portions of equal height forming a cavity between them, each said duct member within a cavity comprising upper surfaces that slope toward a central opening; support means located about said duct member, and an inflatable, sealing member mounted on said support means and extendable downwardly to close said duct opening.
Claim 17
Dependent Claim
68 words
The blast-room floor as described in claim 11 wherein said floor members have a V-shaped cross section which forms each said recess of the floor, a support means extending upwardly along the center of each recess and deflector means with sloping portions extending toward the opposite sloping sides of its said floor member, and an extendable, elongated sealing member mounted on each sloping portion of said deflector means.
Claim 18
Dependent Claim
60 words
The blast-room floor as described in claim 11 wherein each said duct member has an irregular shaped cross section with said elongated opening into said duct member being located well below its top portion so that abrasive and waste particles flowing into the duct member can never fill it or block the flow of conveying air through the duct member.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |