Patent US3281570A successfully refreshed from Google Patents.
US3281570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrogas welding
Assignee: Hoskins Manufacturing Co
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Filing: 1964-05-12
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Granted: 1966-10-25
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Expires: 1984-05-12
Abstract
No abstract record available.
Inventors
- 👤 Walter H Wooding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:56
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/038
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A VERTICAL WELDING MECHANISM, A PAIR OF COOPERATING SHOES ADAPTED TO ENGAGE OPPOSITE SIDES OF THE WORK AT A VERTICAL WELD TO BE FORMED AND HAVING GAS PORT MEANS IN THE SHOES FOR PROJECTING A PROTECTING GAS DOWNWARDLY ONTO THE WELD COMPRISING AN ELONGATED GAS ORIFICE IN EACH SHOE HAVING ITS MAJOR DIMENSION HORIZONTALLY IN THE DIRECTION OF THE PLATES TO BE WELDED, SAID ORIFICE BEING DOWNWARDLY DIRECTED TOWARD THE WELD AND AN INTERIOR GAS CONNECTION IN THE SHOE TO THE ORIFICE ON THE SIDE REMOTE FROM THE WELD EXTENDING LONGITUDINALLY WITH RESPECT TO THE MAJOR DIMENSION OF THE ORIFICE AND AT RIGHT ANGLES TO THE LENGTH OF THE ORIFICE, SAID GAS CONNECTION HAVING A CROSS SECTIONAL AREA WHICH IS LESS THAN HALF THE CROSS SECTIONAL AREA OF THE ELONGATED ORIFICE WHEREBY GAS FLOWING THROUGH THE CONNECTION ABRUPTLY CHANGES DIRECTION AT RIGHT ANGLES AND SIMULTANEOUSLY EXPANDS ON ENTERING AND FLOWING THROUGH THE ELONGATED ORIFICE.
Claim 2
Dependent Claim
155 words
IN A VERTICAL WELDING MECHANISM, A PAIR OF COOPERATING SHOES ADAPTED TO ENGAGE OPPOSITE SIDES OF THE WORK AT A VERTICAL WELD TO BE FORMED AND HAVING GAS PORT MEANS IN THE SHOES FOR PROJECTING A PROTECTING GAS DOWNWARDLY ONTO THE WELD COMPRISING AN ELONGATED GAS ORIFICE IN EACH SHOE HAVING ITS MAJOR DIMENSION HORIZONTALLY IN THE DIRECTION OF THE PLATES TO BE WELDED, SAID ORIFICE BEING DOWNWARDLY DIRECTED TOWARD THE WELD AND AN INTERIOR GAS CONNECTION IN THE SHOE TO THE ORIFICE ON THE SIDE REMOTE FROM THE WELD EXTENDING LONGITUDINALLY WITH RESPECT TO THE MAJOR DIMENSION OF THE ORIFICE AND AT RIGHT ANGLES TO THE LENGTH OF THE ORIFICE, SAID GAS CONNECTION HAVING A CROSS SECTIONAL AREA WHICH IS LESS THAN HALF THE CROSS SECTIONAL AREA OF THE ELONGATED ORIFICE WHEREBY GAS FLOWING THROUGH THE CONNECTION ABRUPTLY CHANGES DIRECTION AT RIGHT ANGLES AND SIMULTANEOUSLY EXPANDS ON ENTERING AND FLOWING THROUGH THE ELONGATED ORIFICE.
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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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |