US3202791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of butt welding
Assignee: Ohio Crankshaft Co
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Filing: 1962-10-24
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Granted: 1965-08-24
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Expires: 1982-10-24
Abstract
No abstract record available.
Inventors
- 👤 Jack W Gillock
- 👤 George H Ledl
- 👤 George M Mucha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:04
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/04; E; E01; E01B; E01B11/00; E01B11/44; E01B11/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A METHOD OF BUTT WELDING THE AXIALLY FACING ENDS OF TWO ELONGATED WORKPIECES HAVING SUBSTANTIALLY IDENTICAL CROSS SECTIONS, COMPRISING THE FOLLOWING STEPS; TRIMMING THE AXIALLY FACING ENDS OF SAID WORKPIECES TO PRODUCE SURFACES THAT ARE SUBSTANTIALLY PERPENDICULAR TO THE AXES OF WORKPIECES AXIALLY ALIGNED WHILE SAID SURFACES ARE SUBSTANTIALLY FREE FROM CONTAMINANTS; SUPPORTING SAID WORKPIECES AGAINST MOVEMENT TRANSVERSE TO THE AXES OF SAID PIECES AGAINST MOVEMENT TRANSVERSE TO THE AXES OF SID WORKPIECES AT LEAST INE THE IMMEDIATE AREA OF SAID JOINT; CONING SAID AXIALLY FACING SURFACES BY APPLYING AN AXIALLY COINING PRESSURE; RELEASING SAID COINING PRESSURE; INDUCTIVELY HEATING SAID JOINT BY A HIGH FREQUENCY CURRENT UNTIL SAID JOINT REACHES A TEMPERATURE SUFFICIENT TO PRODUCE GRAIN GROWTI ACROSS SAID ABUTTING SURFACES; MAINTAINING AN AXIAL UPSETTING PRESSURE ON SAID JOINE IN A RANGE HAVING A MINIMUM OF APPROXIMATELY 2500 P.S.I. AND A MAXIMUM BELOW SAID COINING PRESSURE WHILE SAID JOINT IS BEING HEATED; AND THEREAFTER APPLYING A HIGHER AXIAL UPSETTING PRESSURE ON SAID WORKPIECES UNTIL THE DESIRED UPSET HAS BEEN OBTAINED.
Claim 2
Independent Claim
170 words
A METHOD OF BUTT WELDING THE AXIALLY FACING ENDS OF TWO ELONGATED WORKPIECES HAVING SUBSTANTIALLY IDENTICAL CROSS SECTIONS, COMPRISING THE FOLLOWING STEPS; TRIMMING THE AXIALLY FACING ENDS OF SAID WORKPIECES TO PRODUCE SURFACES THAT ARE SUBSTANTIALLY PERPENDICULAR TO THE AXES OF WORKPIECES AXIALLY ALIGNED WHILE SAID SURFACES ARE SUBSTANTIALLY FREE FROM CONTAMINANTS; SUPPORTING SAID WORKPIECES AGAINST MOVEMENT TRANSVERSE TO THE AXES OF SAID PIECES AGAINST MOVEMENT TRANSVERSE TO THE AXES OF SID WORKPIECES AT LEAST INE THE IMMEDIATE AREA OF SAID JOINT; CONING SAID AXIALLY FACING SURFACES BY APPLYING AN AXIALLY COINING PRESSURE; RELEASING SAID COINING PRESSURE; INDUCTIVELY HEATING SAID JOINT BY A HIGH FREQUENCY CURRENT UNTIL SAID JOINT REACHES A TEMPERATURE SUFFICIENT TO PRODUCE GRAIN GROWTI ACROSS SAID ABUTTING SURFACES; MAINTAINING AN AXIAL UPSETTING PRESSURE ON SAID JOINE IN A RANGE HAVING A MINIMUM OF APPROXIMATELY 2500 P.S.I. AND A MAXIMUM BELOW SAID COINING PRESSURE WHILE SAID JOINT IS BEING HEATED; AND THEREAFTER APPLYING A HIGHER AXIAL UPSETTING PRESSURE ON SAID WORKPIECES UNTIL THE DESIRED UPSET HAS BEEN OBTAINED.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |