US3790007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive recovery system
Assignee: Fruehauf Corp
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Filing: 1971-11-09
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Granted: 1974-02-05
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Expires: 1991-11-09
Abstract
Abstract An abrasive recovery system comprising a perforated floor above a solid floor having a channel therein. Scraper assemblies are mounted above the solid floor for reciprocating movement across the floor toward and away from the channel. The scraper assemblies may be provided with pivoting blades adapted to pivot away from the floor when the scraper assemblies move away from the channel. A power source is connected to the scraper assemblies for reciprocation thereof. A conveyor may be located in the channel to convey collected abrasives away from the floor.
Inventors
- 👤 B Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:47
CPC Classifications
B; B24; B24C; B24C9/00; B24C9/003; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
193 words
An abrasive recovery system comprising: a. a floor above which blasting work is performed; b. a collection channel in said floor; c. rail means disposed above said floor; d. a frame member comprising lateral members connected by at least one longitudinal member, said frame member adapted for longitudinal movement on said rail means; 3. at least one scraper means for moving spent abrasive away from said floor to said channel, saId scraper means including mounting means for pivotally connecting said scraper means to one of said lateral members, said frame member further having stop means thereon for limiting the pivoting movement of said scraper means; f. cable means attached to said scraper means for effecting said pivoting movement, said cable means having means thereon engageable with said scraper means for maintaining the scraping edge of said scraper means adjacent said floor when said scraper means is moving toward said channel and for maintaining the scraping edge of said scraper means away from said floor when said scraper means is moving away from said channel; g. conveyor means in said channel for moving said spent abrasive collected in said channel away from said floor.
Claim 2
Dependent Claim
193 words
An abrasive recovery system comprising: a. a floor above which blasting work is performed; b. a collection channel in said floor; c. rail means disposed above said floor; d. a frame member comprising lateral members connected by at least one longitudinal member, said frame member adapted for longitudinal movement on said rail means; 3. at least one scraper means for moving spent abrasive away from said floor to said channel, saId scraper means including mounting means for pivotally connecting said scraper means to one of said lateral members, said frame member further having stop means thereon for limiting the pivoting movement of said scraper means; f. cable means attached to said scraper means for effecting said pivoting movement, said cable means having means thereon engageable with said scraper means for maintaining the scraping edge of said scraper means adjacent said floor when said scraper means is moving toward said channel and for maintaining the scraping edge of said scraper means away from said floor when said scraper means is moving away from said channel; g. conveyor means in said channel for moving said spent abrasive collected in said channel away from said floor.
Claim 3
Independent Claim
30 words
The system of clain 1 wherein said mounting means comprises a bearing member and a shaft member, said shaft member having its axis parallel to the surface of said floor.
Claim 4
Independent Claim
30 words
The system of clain 1 wherein said mounting means comprises a bearing member and a shaft member, said shaft member having its axis parallel to the surface of said floor.
Claim 5
Dependent Claim
139 words
at least one scraper means for moving spent abrasive away from said floor to said channel, saId scraper means including mounting means for pivotally connecting said scraper means to one of said lateral members, said frame member further having stop means thereon for limiting the pivoting movement of said scraper means; f. cable means attached to said scraper means for effecting said pivoting movement, said cable means having means thereon engageable with said scraper means for maintaining the scraping edge of said scraper means adjacent said floor when said scraper means is moving toward said channel and for maintaining the scraping edge of said scraper means away from said floor when said scraper means is moving away from said channel; g. conveyor means in said channel for moving said spent abrasive collected in said channel away from said floor.
Claim 6
Dependent Claim
139 words
at least one scraper means for moving spent abrasive away from said floor to said channel, saId scraper means including mounting means for pivotally connecting said scraper means to one of said lateral members, said frame member further having stop means thereon for limiting the pivoting movement of said scraper means; f. cable means attached to said scraper means for effecting said pivoting movement, said cable means having means thereon engageable with said scraper means for maintaining the scraping edge of said scraper means adjacent said floor when said scraper means is moving toward said channel and for maintaining the scraping edge of said scraper means away from said floor when said scraper means is moving away from said channel; g. conveyor means in said channel for moving said spent abrasive collected in said channel away from said floor.
Claim 7
Dependent Claim
18 words
The system of claim 1 wherein said frame member is adapted for sliding movement on said rail means.
Claim 8
Dependent Claim
28 words
The system of claim 1 wherein said channel lies substantially across the center of said floor and there are scraper means disposed on each side of said channel.
Claim 9
Dependent Claim
217 words
An abrasive recovery system comprising: a. a perforated first floor above which blasting work is performed; b. a second floor below said first floor for catching spent abrasives falling from said blasting work; c. a collection channel in said second floor; d. rail means disposed above said second floor; e. a frame member comprising lateral members connected by at least one longitudinal member, said frame member adapted for longitudinal movement on said rail means; f. at least one scraper means for moving spent abrasive away from said second floor to said channel, said scraper means including mounting means for pivotally connecting said scraper means to one of said lateral members, said frame member further having stop means thereon for limiting the pivoting movement of said scraper means; g. cable means attached to said scraper means for effecting said pivoting movement, said cable means having means thereon engageable with said scraper means for maintaining the scraping edge of said scraper means adjacent said floor when said scraper means is moving towards said channel and for maintaining the scraping edge of said scraper means away from said floor when said scraper means is moving away from said channel; h. power means connected to said cable means for effecting said pivoting movement and said longitudinal movement of said frame member.
Claim 10
Dependent Claim
217 words
An abrasive recovery system comprising: a. a perforated first floor above which blasting work is performed; b. a second floor below said first floor for catching spent abrasives falling from said blasting work; c. a collection channel in said second floor; d. rail means disposed above said second floor; e. a frame member comprising lateral members connected by at least one longitudinal member, said frame member adapted for longitudinal movement on said rail means; f. at least one scraper means for moving spent abrasive away from said second floor to said channel, said scraper means including mounting means for pivotally connecting said scraper means to one of said lateral members, said frame member further having stop means thereon for limiting the pivoting movement of said scraper means; g. cable means attached to said scraper means for effecting said pivoting movement, said cable means having means thereon engageable with said scraper means for maintaining the scraping edge of said scraper means adjacent said floor when said scraper means is moving towards said channel and for maintaining the scraping edge of said scraper means away from said floor when said scraper means is moving away from said channel; h. power means connected to said cable means for effecting said pivoting movement and said longitudinal movement of said frame member.
Claim 11
Dependent Claim
49 words
The system of claim 5 wherein said cable means passes through an aperture in said scraper means and wherein said means on said cable means engageable with said scraper means comprises a pair of axially spaced collar members attached to said cable on opposite sides of said scraper means.
Claim 12
Dependent Claim
29 words
The system of claim 5 wherein said lateral members are adapted for engagement with said rail means to maintain substantially parallel alignment of said scraper means with said channel.
Claim 13
Dependent Claim
30 words
The system of claim 5 wherein said mounting means comprises a bearing member and a shaft member, said shaft member having its axis parallel to the surface of said floor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |