US3795129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forging sintered articles of high density
Assignee: Individual
•
Filing: 1972-01-21
•
Granted: 1974-03-05
•
Expires: 1992-01-21
Abstract
Abstract A method of forging sintered articles of high density characterized in that pre-shaped powdery articles are heated to a temperature of 1120*-1200*C and then are forged by a tool, which is pre-warmed to 80*-120*C and maintained at such pre-warming temperature, at a tool speed of 7-10m/second. The articles thus forged are rapidly separated from the tool through the medium of an ejector provided on the forging machine.
Inventors
- 👤 S Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:38
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/12; B22F3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A method as claimed in claim 1, wherein said forging is accomplished by a synchronized lowering of said upper element and raising of said lower element.
Claim 2
Dependent Claim
19 words
A method as claimed in claim 1, wherein said preshaped powdery article is heated to a temperature of 1180*-1200*C.
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |