Patent US3242305A successfully refreshed from Google Patents.
US3242305A
Expired / Lapsed
US
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Pressure retract arc torch
Assignee: Union Carbide Corp
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Filing: 1963-07-03
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Granted: 1966-03-22
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Expires: 1983-07-03
Abstract
No abstract record available.
Inventors
- 👤 John S Kane
- 👤 Peter R Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:33
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; H05H1/3442; H05H1/28; H05H1/3436
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
RETRACT STARTING ARC TORCH COMPRISING A BODY HAVING A CHAMBER THEREIN, A MEMBER EXTENDING TRANSVERSELY TO SAID BODY IN SAID CHAMBER AND RESPONSIVE TO PRESSURE THEREIN, AN ELECTRODE CARRIED BY SAID MEMBER FOR MOVEMENT LONGITUDINALLY OF SAID BODY, MEANS FOR SUPPLYING ELECTRIC CURRENT TO SAID ELECTRODE, MEANS IN SAID BODY FOR URGING SAID ELECTRODE DOWNWARDLY, MEANS FOR SUPPLYING FLUID UNDER PRESSURE TO SAID CHAMBER, AND MEANS FOR CONSTRICTING FLUID FLOW AWAY FROM SAID CHAMBER TO RETAIN PRESSURE UNDER SAID RESPONSIVE MEMBER TO RETRACT SAID ELECTRODE AGAINST SAID URGING MEANS.
Claim 2
Dependent Claim
89 words
RETRACT STARTING ARC TORCH COMPRISING A BODY HAVING A CHAMBER THEREIN, A MEMBER EXTENDING TRANSVERSELY TO SAID BODY IN SAID CHAMBER AND RESPONSIVE TO PRESSURE THEREIN, AN ELECTRODE CARRIED BY SAID MEMBER FOR MOVEMENT LONGITUDINALLY OF SAID BODY, MEANS FOR SUPPLYING ELECTRIC CURRENT TO SAID ELECTRODE, MEANS IN SAID BODY FOR URGING SAID ELECTRODE DOWNWARDLY, MEANS FOR SUPPLYING FLUID UNDER PRESSURE TO SAID CHAMBER, AND MEANS FOR CONSTRICTING FLUID FLOW AWAY FROM SAID CHAMBER TO RETAIN PRESSURE UNDER SAID RESPONSIVE MEMBER TO RETRACT SAID ELECTRODE AGAINST SAID URGING MEANS.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |