Patent US4035962A successfully refreshed from Google Patents.
US4035962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zircon sand impacting material
Assignee: Individual
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Filing: 1975-12-03
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Granted: 1977-07-19
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Expires: 1995-12-03
Abstract
Abstract The treatment of hard surfaces by impacts of fine hard granules continually bombarded against them, as for peening, brightening, texturizing, compacting, reforming and/or cleaning adhesions from plates and other articles of steel, aluminum, or hard plastics, is accomplished with extraordinary effectiveness, yet with minimal loss of the blasting material due to breakdown, by providing and utilizing for the treatments selectively sized fractions having grain sizes limited to the ranges of -100/+200 mesh, -100/+140 mesh, -140/+200 mesh and -200/+325 mesh grain sizes, of the rounded oblong grains, having a specific gravity of about 4.7, of a mass of refined zircon sand.
Inventors
- 👤 Joseph W. Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:48
CPC Classifications
B; B24; B24C; B24C1/00; B24C1/08; B24C1/083; B24C1/086; B24C11/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
77 words
A material for treating hard surfaces by being continually hurled at high velocity against such surfaces, consisting essentially of a selectively sized fraction of the fine grains of a mass of refined zircon sand, said grains having rounded oblong configurations and having a specific gravity of about 4.7 and their sizes being in a range selected from the group consisting of -100 to +200, -100 to +140, -140 to +200 and -200 to +325 mesh size ranges.
Claim 2
Dependent Claim
77 words
A material for treating hard surfaces by being continually hurled at high velocity against such surfaces, consisting essentially of a selectively sized fraction of the fine grains of a mass of refined zircon sand, said grains having rounded oblong configurations and having a specific gravity of about 4.7 and their sizes being in a range selected from the group consisting of -100 to +200, -100 to +140, -140 to +200 and -200 to +325 mesh size ranges.
Claim 3
Dependent Claim
24 words
A material according to claim 1, the sizes of said grains being in the range of from -100 mesh to +200 mesh sieve sizes.
Claim 4
Dependent Claim
24 words
A material according to claim 1, the sizes of said grains being in the range of from -100 mesh to +140 mesh sieve sizes.
Claim 5
Dependent Claim
23 words
A material according to claim 1, the sizes of said grains being in the range from -140 mesh to +200 mesh sieve sizes.
Claim 6
Dependent Claim
24 words
A material according to claim 1, the sizes of said grains being in the range of from -200 mesh to +325 mesh sieve sizes.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |