Patent US3257539A successfully refreshed from Google Patents.
US3257539A
Expired / Lapsed
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Apparatus for diffusion joining in a vacuum of metals, alloys and materials different in kind
Assignee: Individual
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Filing: 1964-10-05
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Granted: 1966-06-21
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Kazakov Nicolay Fedotovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:18
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
AN APPARATUS FOR JOINING HETEROGENEOUS METALS AND ALLOYS AND METALS TO NON-METALLIC MATERIALS, COMPRISING FOUR CYLINDERS PROVIDING CHAMBERS FOR RECEIVING ARTICLES TO BE JOINED AND HAVING ACCESS WINDOWS, HYDRAULIC MEANS IN SAID CHAMBER FOR APPLYING A CLAMPING PRESSURE TO SAID ARTICLES, HEATING MEANS IN SAID CHAMBERS FOR HEATING SAID ARTICLES, AN EQUALIZING RECEIVER CONNECTED TO SAID CHAMBERS AND HAVING A VOLUME EQUAL TO TWICE THE TOTAL VOLUME OF SAID CHAMBERS, A FREEZE TYPE MOISTURE TRAP CONNECTED TO SAID RECEIVER, AN OIL ROTARY TYPE VACUUM PUMP CONNECTED TO SAID TRAP FOR PROVIDING A RELATIVELY LOW PRELIMINARY VACUUM, AN OIL JET DIFFUSION VACUUM PUMP CONNECTED TO SAID TRAP FOR PROVIDING A HIGH FINAL VACUUM AND INTERLOCKED SHUT-OFF VALVES ON THE OUTLETS OF SAID DIFFUSION PUMP TO MAINTAIN SAID LAST-NAMED PUMP IN HOT CONDITION SUBSEQUENT TO THE INITIAL HEATING OF THE DIFFUSING OIL.
Claim 2
Independent Claim
140 words
AN APPARATUS FOR JOINING HETEROGENEOUS METALS AND ALLOYS AND METALS TO NON-METALLIC MATERIALS, COMPRISING FOUR CYLINDERS PROVIDING CHAMBERS FOR RECEIVING ARTICLES TO BE JOINED AND HAVING ACCESS WINDOWS, HYDRAULIC MEANS IN SAID CHAMBER FOR APPLYING A CLAMPING PRESSURE TO SAID ARTICLES, HEATING MEANS IN SAID CHAMBERS FOR HEATING SAID ARTICLES, AN EQUALIZING RECEIVER CONNECTED TO SAID CHAMBERS AND HAVING A VOLUME EQUAL TO TWICE THE TOTAL VOLUME OF SAID CHAMBERS, A FREEZE TYPE MOISTURE TRAP CONNECTED TO SAID RECEIVER, AN OIL ROTARY TYPE VACUUM PUMP CONNECTED TO SAID TRAP FOR PROVIDING A RELATIVELY LOW PRELIMINARY VACUUM, AN OIL JET DIFFUSION VACUUM PUMP CONNECTED TO SAID TRAP FOR PROVIDING A HIGH FINAL VACUUM AND INTERLOCKED SHUT-OFF VALVES ON THE OUTLETS OF SAID DIFFUSION PUMP TO MAINTAIN SAID LAST-NAMED PUMP IN HOT CONDITION SUBSEQUENT TO THE INITIAL HEATING OF THE DIFFUSING OIL.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |