Patent US3188776A successfully refreshed from Google Patents.
US3188776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of steel
Assignee: Wheelabrator Corp
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Filing: 1962-08-20
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Granted: 1965-06-15
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Expires: 1982-08-20
Abstract
No abstract record available.
Inventors
- 👤 Gilbert D Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
C; C21; C21D; C21D7/00; C21D7/02; C21D7/04; C21D7/06; B; B21; B21B; B21B45/00; B21B45/04; B24; B24C; B24C1/00; B24C1/08; B24C1/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A PROCESS FOR TREATING HOT WORKED STEEL IN PREPARATION FOR COLD WORKING COMPRISING PROJECTING HARDENED STEEL SHOT, HAVING SMOOTH SURFACES, AT HIGH VELOCITY ONTO THE SURFACE OF THE STEEL TO DISINTEGRATE SCALE AND REMOVE SURFACE SCALE, AND THEN PROJECTING HARDENED STEEL GRIT, HAVING SHARP EDGES, ONTO THE PREVIOUSLY TREATED SURFACE OF THE STEEL TO REMOVE SUBSTANTIALLY ALL OF THE REMAINING SCALE AND OTHER SMUT FORMING CONDITIONS REMAINING IN THE SURFACE OF THE STEEL, AND IN WHICH THE STEEL GRIT IS OF VARIABLE DIMENSION WITH THE AVERAGE DIAMETER OF THE STEEL SHOT EXCEEDING THE AVERAGE OF THE LARGE DIMENSIONS OF THE STEEL GRIT, AND MOVING ONE OF THE ELEMENTS INCLUDING THE SURFACE OF THE HOT WORKED STEEL AND THE SOURCE OF THE PROJECTION OF THE STEEL SHOT AND GRIT IN RELATIVE LINEAR MOVEMENT DURING PROJECTION OF THE STEEL SHOT AND GRIT ONTO THE SURFACE.
Claim 2
Dependent Claim
143 words
A PROCESS FOR TREATING HOT WORKED STEEL IN PREPARATION FOR COLD WORKING COMPRISING PROJECTING HARDENED STEEL SHOT, HAVING SMOOTH SURFACES, AT HIGH VELOCITY ONTO THE SURFACE OF THE STEEL TO DISINTEGRATE SCALE AND REMOVE SURFACE SCALE, AND THEN PROJECTING HARDENED STEEL GRIT, HAVING SHARP EDGES, ONTO THE PREVIOUSLY TREATED SURFACE OF THE STEEL TO REMOVE SUBSTANTIALLY ALL OF THE REMAINING SCALE AND OTHER SMUT FORMING CONDITIONS REMAINING IN THE SURFACE OF THE STEEL, AND IN WHICH THE STEEL GRIT IS OF VARIABLE DIMENSION WITH THE AVERAGE DIAMETER OF THE STEEL SHOT EXCEEDING THE AVERAGE OF THE LARGE DIMENSIONS OF THE STEEL GRIT, AND MOVING ONE OF THE ELEMENTS INCLUDING THE SURFACE OF THE HOT WORKED STEEL AND THE SOURCE OF THE PROJECTION OF THE STEEL SHOT AND GRIT IN RELATIVE LINEAR MOVEMENT DURING PROJECTION OF THE STEEL SHOT AND GRIT ONTO THE SURFACE.
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |