US2703297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hardening manganese steel
Assignee: KELLY L TAULBEE
•
Filing: 1951-03-26
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Granted: 1955-03-01
•
Expires: 1971-03-26
Abstract
No abstract record available.
Inventors
- 👤 Norman A Macleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:09
CPC Classifications
C; C21; C21D; C21D7/00; C21D7/02; C21D7/04; C21D10/00; Y; Y10; Y10S; Y10S29/00; Y10S29/049; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49806; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD OF HARDENING AT LEAST A PORTION OF AN ARTICLE OF AUSTENITIC MANGANESE STEEL WHICH COMPRISES PLACING CONTIGUOUS TO THE SURFACE OF THE PORTION OF SAID ARTICLE TO BE HARDENED A SHEET OF EXPLOSIVE MATERIAL CONFORMING APPROXIMATELY TO THE CONFIGURATION OF SAID SURFACE, EXPLODING SAID EXPLOSIVE MATERIAL SUCH THAT AT LEAST A PORTION OF THE SHOCK WAVE THEREBY PRODUCED WILL ENTER SAID SURFACE AND EFFECT HARDENING OF SAID STEEL IN SUBSTANTIAL DEPTH, SAID HARDENING DIMINISHING PROGRESSIVELY FROM SAID SURFACE OF SAID STEEL INWARDLY, THE QUANTITY OF SAID EXPLOSIVE MATERIAL BEING SUFFICIENT TO HARDEN SAID STEEL IN SUBSTANTIAL DEPTH BELOW SAID SURFACE BUT LESS THAN THAT WHICH WILL PERMANENTLY DEFORM THE SURFACE CONTOUR OF SAID ARTICLE MORE THAN A NEGLIGIBLE AMOUNT.
Claim 2
Independent Claim
121 words
A METHOD OF HARDENING AT LEAST A PORTION OF AN ARTICLE OF AUSTENITIC MANGANESE STEEL WHICH COMPRISES PLACING CONTIGUOUS TO THE SURFACE OF THE PORTION OF SAID ARTICLE TO BE HARDENED A SHEET OF EXPLOSIVE MATERIAL CONFORMING APPROXIMATELY TO THE CONFIGURATION OF SAID SURFACE, EXPLODING SAID EXPLOSIVE MATERIAL SUCH THAT AT LEAST A PORTION OF THE SHOCK WAVE THEREBY PRODUCED WILL ENTER SAID SURFACE AND EFFECT HARDENING OF SAID STEEL IN SUBSTANTIAL DEPTH, SAID HARDENING DIMINISHING PROGRESSIVELY FROM SAID SURFACE OF SAID STEEL INWARDLY, THE QUANTITY OF SAID EXPLOSIVE MATERIAL BEING SUFFICIENT TO HARDEN SAID STEEL IN SUBSTANTIAL DEPTH BELOW SAID SURFACE BUT LESS THAN THAT WHICH WILL PERMANENTLY DEFORM THE SURFACE CONTOUR OF SAID ARTICLE MORE THAN A NEGLIGIBLE AMOUNT.
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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) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |