US3206643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc-welding apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1962-06-15
•
Granted: 1965-09-14
•
Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Adamson
- 👤 Roger R Giler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:25
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A CONTROL UNIT TO BE ENERGIZED EITHER FROM AN ALTERNATING-CURRENT OR FROM A DIRECT-CURRENT SOURCE INCLUDING POWER-SUPPLY CONDUCTORS TO BE CONNECTED TO SAID ALTERNATING OR DIRECT-CURRENT SOURCE AS THE CASE MAY BE, ONE OF SAID POWER-SUPPLY CONDUCTORS BEING GROUNDED WHEN SAID POWER-SUPPLY CONDUCTORS ARE CONNECTED TO SAID SOURCE POWER DERIVING CONDUCTORS THROUGH WHICH POWER FOR SAID UNIT IS DERIVED, A RECTIFIER OF THE BRIDGE TYPE CONNECTED DIRECTLY BETWEEN SAID POWER-SUPPLY CONDUCTORS AND SAID POWER-DERIVING CONDUCTORS SO AS TO SUPPLY RECTIFIED DIRECTCURRENT POWER FROM SAID ALTERNATING-CURRENT SOURCE TO SAID DERIVING CONDUCTORS OR TO PASS DIRECT-CURRENT POWER FROM SAID DIRECT-CURRENT SOURCES TO SAID DERIVING CONDUCTORS, AND MEANS CONNECTED TO SAID DERIVING CONDUCTORS FOR MAINTAINING ALL SAID DERIVING CONDUCTORS DISCONNECTED FROM GROUND.
Claim 2
Dependent Claim
119 words
A CONTROL UNIT TO BE ENERGIZED EITHER FROM AN ALTERNATING-CURRENT OR FROM A DIRECT-CURRENT SOURCE INCLUDING POWER-SUPPLY CONDUCTORS TO BE CONNECTED TO SAID ALTERNATING OR DIRECT-CURRENT SOURCE AS THE CASE MAY BE, ONE OF SAID POWER-SUPPLY CONDUCTORS BEING GROUNDED WHEN SAID POWER-SUPPLY CONDUCTORS ARE CONNECTED TO SAID SOURCE POWER DERIVING CONDUCTORS THROUGH WHICH POWER FOR SAID UNIT IS DERIVED, A RECTIFIER OF THE BRIDGE TYPE CONNECTED DIRECTLY BETWEEN SAID POWER-SUPPLY CONDUCTORS AND SAID POWER-DERIVING CONDUCTORS SO AS TO SUPPLY RECTIFIED DIRECTCURRENT POWER FROM SAID ALTERNATING-CURRENT SOURCE TO SAID DERIVING CONDUCTORS OR TO PASS DIRECT-CURRENT POWER FROM SAID DIRECT-CURRENT SOURCES TO SAID DERIVING CONDUCTORS, AND MEANS CONNECTED TO SAID DERIVING CONDUCTORS FOR MAINTAINING ALL SAID DERIVING CONDUCTORS DISCONNECTED FROM GROUND.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |