US3298096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming distortion resistant tubular elements
Assignee: Varian Medical Systems Inc
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Filing: 1963-12-30
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Granted: 1967-01-17
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 William R Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:54
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/10; B; B21; B21C; B21C37/00; B21C37/06; B21C37/30; C21; C21D; C21D7/00; C21D7/02; C21D7/10; C21D7/12; H; H01; H01J; H01J9/00; H01J9/02; H01J9/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF MAKING A HOLLOW, CYLINDRICAL, HARDENED, DISTORTION RESISTANT, THIN WALLED STRUCTURE OF HASTELLOY B METAL COMPRISING THE STEPS OF FORMING A STRIP OF HASTELLOY B METAL INTO A CYLINDRICAL CONFIGURATION ABOUT A CYLINDRICAL MANDREL MADE OF 300 SERIES STAINLESS STEEL AND SECURING THE ENDS OF SAID STRIP TOGETHER, HEATING THE ASSEMBLY OF SAID HASTELLOY B METAL CYLINDER AND SAID 300 SERIES STAINLESS STEEL MANDREL IN A FURNACE IN A REDUCING ATMOSPHERE AT A TEMPERATURE OF ABOUT 850*C. FOR A PERIOD OF ABOUT 30 MINUTES AND THEN COOLING SAID ASSEMBLY.
Claim 2
Independent Claim
91 words
THE METHOD OF MAKING A HOLLOW, CYLINDRICAL, HARDENED, DISTORTION RESISTANT, THIN WALLED STRUCTURE OF HASTELLOY B METAL COMPRISING THE STEPS OF FORMING A STRIP OF HASTELLOY B METAL INTO A CYLINDRICAL CONFIGURATION ABOUT A CYLINDRICAL MANDREL MADE OF 300 SERIES STAINLESS STEEL AND SECURING THE ENDS OF SAID STRIP TOGETHER, HEATING THE ASSEMBLY OF SAID HASTELLOY B METAL CYLINDER AND SAID 300 SERIES STAINLESS STEEL MANDREL IN A FURNACE IN A REDUCING ATMOSPHERE AT A TEMPERATURE OF ABOUT 850*C. FOR A PERIOD OF ABOUT 30 MINUTES AND THEN COOLING SAID ASSEMBLY.
References Cited (Backward Citations)
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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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |