US3919956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightning protection installation
Assignee: Individual
•
Filing: 1972-03-14
•
Granted: 1975-11-18
•
Expires: 1992-03-14
Abstract
Abstract A lightning rod is grounded by the inner conducting core of a coaxial cable having a grounded outer conducting sheath separated from said core by an insulating layer.
Inventors
- 👤 Cesare G Invernizzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:54
CPC Classifications
H; H02; H02G; H02G13/00; H02G13/20; H02G13/80
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
In a lightning protection installation including a lighting rod, a ground, and a conductor operatively attached to and extending between said lightning rod and said ground for grounding said lightning rod, the improvement wherein: said conductor comprises a conductor core connected to said lightning rod and to said ground; an outer conducting sheath coaxially surrounding said conductor core and extending along substantially the entire length thereof, said outer conducting sheath being connected to said ground and; insulating means between said conductor core and said outer conducting sheath and extending the entire length of said outer conducting sheath.
Claim 2
Dependent Claim
97 words
In a lightning protection installation including a lighting rod, a ground, and a conductor operatively attached to and extending between said lightning rod and said ground for grounding said lightning rod, the improvement wherein: said conductor comprises a conductor core connected to said lightning rod and to said ground; an outer conducting sheath coaxially surrounding said conductor core and extending along substantially the entire length thereof, said outer conducting sheath being connected to said ground and; insulating means between said conductor core and said outer conducting sheath and extending the entire length of said outer conducting sheath.
Claim 3
Dependent Claim
44 words
The improvement claimed in claim 1, wherein said conductor further comprises a central insulating core located centrally of said conductor core, an intermediate insulating layer separating said conductor core and said outer conducting sheath, and an exterior insulating cover covering said outer conducting sheath.
Claim 4
Dependent Claim
26 words
The improvement claimed in claim 1, wherein said installation further comprises a radioactive ionizing source positioned in the vicinity of the point of said lightning rod.
Claim 5
Dependent Claim
38 words
The improvemenT claimed in claim 1, wherein said installation is positioned on a boat, and said conductor core and said outer conducting sheath are connected to a ground plate formed by the rudder and/or propeller of said boat.
References Cited (Backward Citations)
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Cited
US1290881A
Cited
US2025338A
Cited
US2531183A
Cited
US2909589A
Cited
US3541221A
Cited
US3617805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |