US2762734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for forming and stress relieving metal
Assignee: North American Aviation Corp
•
Filing: 1952-09-29
•
Granted: 1956-09-11
•
Expires: 1972-09-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Corral
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:25
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/673
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A DEVICE FOR FORMING, QUENCHING, AND STRESS-RELIEVING A HEATED WORKPIECE HAVING CUTOUT PORTIONS THEREIN, SAID DEVICE COMPRISING A PAIR OF MATCHING DIE MEMBERS ADAPTED TO RECEIVE SAID WORKPIECE, EACH OF SAID DIE MEMBERS BEING PROVIDED WITH COOLANT DUCTS THEREIN, SAID DUCTS HAVING APERTURES COMMUNICATING WITH THE SURFACE OF SAID DIE MEMBERS AT LOCATIONS CORRESPONDING TO THOSE OF SAID CUTOUT PORTIONS; MEANS FOR EXERTING A FORCE URGING SAID DIE MEMBERS INTO ENGAGEMENT WITH SAID WORKPIECE, WHERE BY SAID WORKPIECE IS FORMED AND RESTRAINED; AND MEANS FOR CIRCULATING FLUID THROUGH SAID DUCTS FOR QUENCHING SAID WORKPIECE WHILE SO ENGAGED, SAID WORKPIECE BEING UNIFORMLY WORKED BY THE RESTRAINING ACTION OF SAID DIES DURING SAID QUENCHING.
Claim 2
Independent Claim
112 words
A DEVICE FOR FORMING, QUENCHING, AND STRESS-RELIEVING A HEATED WORKPIECE HAVING CUTOUT PORTIONS THEREIN, SAID DEVICE COMPRISING A PAIR OF MATCHING DIE MEMBERS ADAPTED TO RECEIVE SAID WORKPIECE, EACH OF SAID DIE MEMBERS BEING PROVIDED WITH COOLANT DUCTS THEREIN, SAID DUCTS HAVING APERTURES COMMUNICATING WITH THE SURFACE OF SAID DIE MEMBERS AT LOCATIONS CORRESPONDING TO THOSE OF SAID CUTOUT PORTIONS; MEANS FOR EXERTING A FORCE URGING SAID DIE MEMBERS INTO ENGAGEMENT WITH SAID WORKPIECE, WHERE BY SAID WORKPIECE IS FORMED AND RESTRAINED; AND MEANS FOR CIRCULATING FLUID THROUGH SAID DUCTS FOR QUENCHING SAID WORKPIECE WHILE SO ENGAGED, SAID WORKPIECE BEING UNIFORMLY WORKED BY THE RESTRAINING ACTION OF SAID DIES DURING SAID QUENCHING.
References Cited (Backward Citations)
US1018676A
Cited
US1204096A
Cited
US1457772A
Cited
US1418985A
Cited
GB553265A
Cited
US2396940A
Cited
US2615411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |