US3007823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for quench hardening
Assignee: Gleason Works
•
Filing: 1958-01-24
•
Granted: 1961-11-07
•
Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Robert V Adair
- 👤 Oliver F Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:50
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/673; C21D9/00; C21D9/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE METHOD OF QUENCH HARDENING A RING GEAR OR LIKE PART, IN WHICH A QUENCHING MEDIUM IS APPLIED TO THE HEATED PART WHILE IT IS HELD BETWEEN CLAMPING DIES, THE IMPROVEMENT COMPRISING PERIODICALLY RELEASING THE CLAMPING PRESSURE EXERTED ON THE PART BY THE DIES AS THE PART IS
Claim 2
Independent Claim
48 words
THE METHOD OF QUENCH HARDENING A RING GEAR OR LIKE PART, IN WHICH A QUENCHING MEDIUM IS APPLIED TO THE HEATED PART WHILE IT IS HELD BETWEEN CLAMPING DIES, THE IMPROVEMENT COMPRISING PERIODICALLY RELEASING THE CLAMPING PRESSURE EXERTED ON THE PART BY THE DIES AS THE PART IS
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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) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |