Patent US3229492A successfully refreshed from Google Patents.
US3229492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of obtaining improved machining characteristics of ferrous materials
Assignee: RBS INDUSTRIES Inc A CORP OF
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Filing: 1965-09-02
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Granted: 1966-01-18
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Marshall W Tufts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:14
CPC Classifications
C; C21; C21D; C21D8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN THE METHOD OF IMPARTING ENHANCED MACHINING CHARACTERISTICS TO CARBON CONTAINING STOCK WHICH RESPONDS TO STRAIN OR PRECIPITATION HARDENING, THE STEPS COMPRISING PROVIDING CARBON CONTAINING STOCK HAVING A CROSS SECTIONAL AREA GREATER THAN A FINAL CROSS SECTIONAL AREA, REDUCING THE CROSS SECTIONAL AREA TO A SIZE INTERMEDIATE THE STARTING AND FINAL CROSS SECTIONAL AREAS BY APPLYING A TENSILE STRESS TO THE STOCK UNTIL A PERMANENT SEET IS IMPARTED TO IT, AND COLD SIZING THE STOCK TO THEFINAL DESIRED SIZE, THE AFORESAID STEPS BEING CARRIED OUT IN THE ABSENCE OF ELEVATED TEMPERATURE TREATMENT.
Claim 2
Dependent Claim
92 words
IN THE METHOD OF IMPARTING ENHANCED MACHINING CHARACTERISTICS TO CARBON CONTAINING STOCK WHICH RESPONDS TO STRAIN OR PRECIPITATION HARDENING, THE STEPS COMPRISING PROVIDING CARBON CONTAINING STOCK HAVING A CROSS SECTIONAL AREA GREATER THAN A FINAL CROSS SECTIONAL AREA, REDUCING THE CROSS SECTIONAL AREA TO A SIZE INTERMEDIATE THE STARTING AND FINAL CROSS SECTIONAL AREAS BY APPLYING A TENSILE STRESS TO THE STOCK UNTIL A PERMANENT SEET IS IMPARTED TO IT, AND COLD SIZING THE STOCK TO THEFINAL DESIRED SIZE, THE AFORESAID STEPS BEING CARRIED OUT IN THE ABSENCE OF ELEVATED TEMPERATURE TREATMENT.
References Cited (Backward Citations)
US2764514A
Cited
US3053703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |