Patent US3237351A successfully refreshed from Google Patents.
US3237351A
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Method for handling grit
Assignee: Ajem Laboratories Inc
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Filing: 1961-06-15
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Granted: 1966-03-01
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Expires: 1981-06-15
Abstract
No abstract record available.
Inventors
- 👤 Robert G Millhiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:40
CPC Classifications
B; B24; B24C; B24C9/00; B24C9/006; B03; B03B; B03B5/00; B03B5/62; B03B5/623; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
THE METHOD OF RECLAIMING USED GRIT FROM A WET BLASTING OPERATION WHICH COMPRISES SETTLING THE GRIT IN A FLUID BODY WITH EXCESS LIQUID, OVERFLOWING THE EXCESS LIQUID WITH THE LIGHTER SOLIDS AND OTHER WASTES BEING CARRIED ALONG IN SUSPENSION THEREIN, ENTRAINING THE SETTLED GRIT BY A JET OF CLEAN LIQUID AND FLOWING THE RESULTING STREAM THROUGH A CONDUIT TO ANOTHER LIQUID BODY, SETTLING THE GRIT THEREIN, AND OVERFLOWING EXCESS LIQUID ALONG WITH FINE SOLIDS AND OTHER WASTES, AGAIN ENTRAINING SETTLED GRIT BY A JET OF CLEAN LIQUID AND FLOWING THROUGH A CONDUIT FOR REUSE, THE EXCESS LIQUID OVERFLOW BEING CLEANED OF SUSPENDED SOLIDS AND PUMPED BACK TO FORM SAID JETS.
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |