Patent US4896590A successfully refreshed from Google Patents.
Patent US2860077A successfully refreshed from Google Patents.
US2860077A
Expired / Lapsed
US
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Quench hardening method and machine
Assignee: Gleason Works
•
Filing: 1955-12-22
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Granted: 1958-11-11
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Expires: 1975-12-22
Abstract
No abstract record available.
Inventors
- 👤 Robert V Adair
- 👤 Earl D Dammert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:03
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE METHOD OF TREATING A SUBSTANTIALLY RING-SHAPED QUENCH-HARDENABLE WORKPIECE COMPRISING CLAMPING IT WHILE HOT BETWEEN DIES, ACTUATING THE DIES TO CAUSE RELATIVE BACK AND FORTH MOTION BETWEEN THE INNER AND THE OUTER PERIPHERAL PORTION OF THE WORKPIECE IN THE DIRECTION OF THE AXIS OF THE WORKPIECE, TO THEREBY FLEX THE WORKPIECE TOROIDALLY BACK AND FORTH ABOUT A NEUTRAL CIRCLE TO OPPOSITE SIDES OF A NEUTRAL POSITION.
Claim 2
Independent Claim
66 words
THE METHOD OF TREATING A SUBSTANTIALLY RING-SHAPED QUENCH-HARDENABLE WORKPIECE COMPRISING CLAMPING IT WHILE HOT BETWEEN DIES, ACTUATING THE DIES TO CAUSE RELATIVE BACK AND FORTH MOTION BETWEEN THE INNER AND THE OUTER PERIPHERAL PORTION OF THE WORKPIECE IN THE DIRECTION OF THE AXIS OF THE WORKPIECE, TO THEREBY FLEX THE WORKPIECE TOROIDALLY BACK AND FORTH ABOUT A NEUTRAL CIRCLE TO OPPOSITE SIDES OF A NEUTRAL POSITION.
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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) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |