US3275790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding apparatus
Assignee: Texas Instruments Inc
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Filing: 1963-08-14
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Granted: 1966-09-27
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Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 John D Helms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:41
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31; B23K11/318
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A STEP-WELDING MECHANISM COMPRISING A FIRST GUIDE, A CARRIER SLIDABLE ON THE FIRST GUIDE, A PAIR OF GUIDE MEANS ON THE CARRIER PARALLEL TO THE FIRST GUIDE, A PAIR OF ELECTRODES, ARMS OPPOSITELY SLIDABLE ON SAID GUIDE MEANS AND ROTATABLE THEREON, EACH ARM CARRYING AN ELECTRODE, A COMPENSATING LEVER PIVOTED AT SAID CARRIER BETWEEN SAID ARMS, THE ENDS OF SAID LEVER BEING PIVOTED TO THE ARMS RESPECTIVELY TO EFFECT OPPOSITE RELATIVE MOVEMENTS THEREBETWEEN ON THE CARRIER, AN ADJUSTING SCREW CONNECTED TRANSVERSELY TO THE CARRIER FOR ROTARY BUT NONAXIAL MOVEMENTS THEREWITH, SAID SCREW HAVING THREADS OF OPPOSITE PITCHES, NUTS ON SAID THREADS, SAID NUTS HAVING CONNECTIONS WITH SAID ARMS ADAPTED TO PREVENT ROTATION OF THE NUTS RELATIVE TO THE ARMS BUT PERMITTING OPPOSITE SLIDING MOTIONS OF THE ARMS WITH RESPECT TO THE SCREW, AND MEANS FOR TURNING THE SCREW TO MOVE THE ARMS THROUGH THE NUTS.
Claim 2
Dependent Claim
145 words
A STEP-WELDING MECHANISM COMPRISING A FIRST GUIDE, A CARRIER SLIDABLE ON THE FIRST GUIDE, A PAIR OF GUIDE MEANS ON THE CARRIER PARALLEL TO THE FIRST GUIDE, A PAIR OF ELECTRODES, ARMS OPPOSITELY SLIDABLE ON SAID GUIDE MEANS AND ROTATABLE THEREON, EACH ARM CARRYING AN ELECTRODE, A COMPENSATING LEVER PIVOTED AT SAID CARRIER BETWEEN SAID ARMS, THE ENDS OF SAID LEVER BEING PIVOTED TO THE ARMS RESPECTIVELY TO EFFECT OPPOSITE RELATIVE MOVEMENTS THEREBETWEEN ON THE CARRIER, AN ADJUSTING SCREW CONNECTED TRANSVERSELY TO THE CARRIER FOR ROTARY BUT NONAXIAL MOVEMENTS THEREWITH, SAID SCREW HAVING THREADS OF OPPOSITE PITCHES, NUTS ON SAID THREADS, SAID NUTS HAVING CONNECTIONS WITH SAID ARMS ADAPTED TO PREVENT ROTATION OF THE NUTS RELATIVE TO THE ARMS BUT PERMITTING OPPOSITE SLIDING MOTIONS OF THE ARMS WITH RESPECT TO THE SCREW, AND MEANS FOR TURNING THE SCREW TO MOVE THE ARMS THROUGH THE NUTS.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |