US3117041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treated steel article
Assignee: Motors Liquidation Co
•
Filing: 1960-06-21
•
Granted: 1964-01-07
•
Expires: 1980-06-21
Abstract
No abstract record available.
Inventors
- 👤 Donald P Koistinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:23
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/36; Y; Y10; Y10S; Y10S148/00; Y10S148/902; Y10S148/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A FINISHED ROLLING CONTACT BEARING ROLLING ELEMENT HAVING A DIAMETER UP TO ABOUT ONE-HALF INCH, SAID ELEMENT BEING FORMED OF A THROUGH-HARDENING STEEL, SAID ELEMENT BEING HARDENED TO GENERALLY THE SAME HARDNESS SUBSTANTIALLY THROUGHOUT ITS CROSS SECTION, AND A COMPRESSIVELY STRESSED SURFACE ZONE ON SAID ELEMENT EXTENDING TO A DEPTH GREATER THAN ABOUT 0.010 INCH.
Claim 2
Dependent Claim
55 words
A FINISHED ROLLING CONTACT BEARING ROLLING ELEMENT HAVING A DIAMETER UP TO ABOUT ONE-HALF INCH, SAID ELEMENT BEING FORMED OF A THROUGH-HARDENING STEEL, SAID ELEMENT BEING HARDENED TO GENERALLY THE SAME HARDNESS SUBSTANTIALLY THROUGHOUT ITS CROSS SECTION, AND A COMPRESSIVELY STRESSED SURFACE ZONE ON SAID ELEMENT EXTENDING TO A DEPTH GREATER THAN ABOUT 0.010 INCH.
References Cited (Backward Citations)
US1813507A
Cited
US2086801A
Cited
US1987841A
Cited
US2378300A
Cited
US2493951A
Cited
US2470988A
Cited
US2437249A
Cited
US2843374A
Cited
US2875112A
Cited
US2779697A
Cited
US2921877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |