Patent US3159765A successfully refreshed from Google Patents.
US3159765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightning arrester spark gap
Assignee: McGraw Edison Co
•
Filing: 1961-03-10
•
Granted: 1964-12-01
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 Fred J Schultz
- 👤 Edward L Sankey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:24
CPC Classifications
H; H01; H01T; H01T2/00; H01T2/02; H01T1/00; H01T1/02; H01T1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
228 words
A LIGHTNING ARRESTER SPARK GAP ASSEMBLY COMPRISING IN COMBINATION, A PAIR OF SPACED APART DIVERGENT ELECTRODES, SAID ELECTRODES DEFINING THEREBETWEEN AT THEIR POINT OF GREATEST CONFLUENCE A SPARK GAP, ONE OF SAID PAIR OF ELECTRODES BEING CONNECTED TO A SOURCE OF HIGHER POTENTIAL THAN THE OTHER OF SAID ELECTRODES, ARC MOVING MEANS CONNECTED TO SAID SOURCE OF HIGHER POTENTIAL, AN AUXILIARY ELECTRODE IN SERIES WITH SAID ARC MOVING MEANS AND HAVING A PORTION THEREOF SPACEDLY JUXTAPOSED BETWEEN PORTIONS OF SAID PAIR OF ELECTRODES, SAID ONE OF SAID PAIR OF ELECTRODES AND SAID AUXILIARY ELECTRODE AND SAID OTHER OF SAID PAIR OF ELECTRODES AND SAID AUXILIARY ELECTRODE DEFINING RESPECTIVELY THEREBETWEEN SPARK GAPS; SAID ARC MOVING MEANS, SAID AUXILIARY ELECTRODE, THE SPARK GAP BETWEEN SAID AUXILIARY ELECTRODE AND SAID OTHER OF SAID PAIR OF ELECTRODES AND SAID OTHER OF SAID PAIR OF ELECTRODES CONJOINTLY DEFINING A FOLLOW CURRENT PATH IN PARALLEL WITH SAID SPARK GAP DEFINED BY SAID PAIR OF ELECTRODES, AND MEANS IN THE VICINITY OF SAID PAIR OF ELECTRODES FOR FACILITATING EXTINCTION OF THE FOLLOW CURRENT ARC, WHEREBY SAID ARC MOVING MEANS IS INSERTED INTO THE POWER FOLLOW CURRENT CIRCUIT SUBSEQUENT TO THE SURGE TO THEREBY PROTECT SAID ARC MOVING MEANS AGAINST THE EFFECTS OF THE SURGE AND TO ALLOW SAID ARC MOVING MEANS TO FORCE THE FOLLOW CURRENT ARC INTO CONTACT WITH SAID ARC EXTINCTION FACILITATING MEANS.
Claim 2
Dependent Claim
228 words
A LIGHTNING ARRESTER SPARK GAP ASSEMBLY COMPRISING IN COMBINATION, A PAIR OF SPACED APART DIVERGENT ELECTRODES, SAID ELECTRODES DEFINING THEREBETWEEN AT THEIR POINT OF GREATEST CONFLUENCE A SPARK GAP, ONE OF SAID PAIR OF ELECTRODES BEING CONNECTED TO A SOURCE OF HIGHER POTENTIAL THAN THE OTHER OF SAID ELECTRODES, ARC MOVING MEANS CONNECTED TO SAID SOURCE OF HIGHER POTENTIAL, AN AUXILIARY ELECTRODE IN SERIES WITH SAID ARC MOVING MEANS AND HAVING A PORTION THEREOF SPACEDLY JUXTAPOSED BETWEEN PORTIONS OF SAID PAIR OF ELECTRODES, SAID ONE OF SAID PAIR OF ELECTRODES AND SAID AUXILIARY ELECTRODE AND SAID OTHER OF SAID PAIR OF ELECTRODES AND SAID AUXILIARY ELECTRODE DEFINING RESPECTIVELY THEREBETWEEN SPARK GAPS; SAID ARC MOVING MEANS, SAID AUXILIARY ELECTRODE, THE SPARK GAP BETWEEN SAID AUXILIARY ELECTRODE AND SAID OTHER OF SAID PAIR OF ELECTRODES AND SAID OTHER OF SAID PAIR OF ELECTRODES CONJOINTLY DEFINING A FOLLOW CURRENT PATH IN PARALLEL WITH SAID SPARK GAP DEFINED BY SAID PAIR OF ELECTRODES, AND MEANS IN THE VICINITY OF SAID PAIR OF ELECTRODES FOR FACILITATING EXTINCTION OF THE FOLLOW CURRENT ARC, WHEREBY SAID ARC MOVING MEANS IS INSERTED INTO THE POWER FOLLOW CURRENT CIRCUIT SUBSEQUENT TO THE SURGE TO THEREBY PROTECT SAID ARC MOVING MEANS AGAINST THE EFFECTS OF THE SURGE AND TO ALLOW SAID ARC MOVING MEANS TO FORCE THE FOLLOW CURRENT ARC INTO CONTACT WITH SAID ARC EXTINCTION FACILITATING MEANS.
References Cited (Backward Citations)
US508632A
Cited
US2825008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |