US3142746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consumable electrode arc welding apparatus
Assignee: AO Smith Corp
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Filing: 1961-07-28
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Granted: 1964-07-28
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Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Donald W Schmerling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:46
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/122; B23K9/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CONSUMABLE ELECTRODE CONTACT UNIT, COMPRISING A TUBULAR CONTACT TUBE HAVING AN AXIAL OPENING GENERALLY CORRESPONDING TO THE DIAMETER OF THE ELECTRODE AND A RADIAL OPENING ADJACENT THE DISCHARGE END OF THE CONTACT TUBE, A PRESSURE TRANSMITTING MEMBER IN SAID RADIAL OPENING HAVING AN INNER SPHERICALLY SHAPED FACE AND SUBSTANTIALLY CLOSING THE AXIAL PASSAGE IN THE INNERMOST POSITION, AND A TUBULAR SPLIT SPRING CLIP ENCIRCLING THE CONTACT TUBE AND OVERLYING THE RADIAL OPENING TO CONTINUOUSLY RESILIENTLY URGE THE MEMBER INTO THE CONTACT TUBE WITH THE SPHERICALLY SHAPED FACE ENGAGING THE ELECTRODE AND FIRMLY HOLDING THE ELECTRODE IN ENGAGEMENT WITH THE OPPOSITE ALIGNED INTERIOR SURFACE OF THE CONTACT TUBE.
Claim 2
Dependent Claim
108 words
A CONSUMABLE ELECTRODE CONTACT UNIT, COMPRISING A TUBULAR CONTACT TUBE HAVING AN AXIAL OPENING GENERALLY CORRESPONDING TO THE DIAMETER OF THE ELECTRODE AND A RADIAL OPENING ADJACENT THE DISCHARGE END OF THE CONTACT TUBE, A PRESSURE TRANSMITTING MEMBER IN SAID RADIAL OPENING HAVING AN INNER SPHERICALLY SHAPED FACE AND SUBSTANTIALLY CLOSING THE AXIAL PASSAGE IN THE INNERMOST POSITION, AND A TUBULAR SPLIT SPRING CLIP ENCIRCLING THE CONTACT TUBE AND OVERLYING THE RADIAL OPENING TO CONTINUOUSLY RESILIENTLY URGE THE MEMBER INTO THE CONTACT TUBE WITH THE SPHERICALLY SHAPED FACE ENGAGING THE ELECTRODE AND FIRMLY HOLDING THE ELECTRODE IN ENGAGEMENT WITH THE OPPOSITE ALIGNED INTERIOR SURFACE OF THE CONTACT TUBE.
References Cited (Backward Citations)
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Cited
US2379470A
Cited
US2402256A
Cited
US3007032A
Cited
US2981825A
Cited
US3038059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |