Patent US4156793A successfully refreshed from Google Patents.
US4156793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground rod assembly
Assignee: Individual
•
Filing: 1977-06-27
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Granted: 1979-05-29
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Expires: 1997-06-27
Abstract
Abstract An improvement for the assembly of ground rods, comprising a fitting having two threaded portions, the first as a guide portion being adapted to receive an unthreaded ground rod and a threaded gripping portion adapted to grip the end of a rod through deformation of the threads when the rod is forceably inserted in the fitting. Conjointly usable therewith is a similarly threaded terminal fitting adapted to receive an electrical ground line and retain the same permanently in a contact position when the fitting is forceably driven on the rod.
Inventors
- 👤 Fred B. Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:55
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/58; H01R4/66; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945; Y10T403/00; Y10T403/49; Y10T403/4966; Y10T403/57; Y10T403/5733
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A ground rod and fitting, comprising: a conductive rod having a smooth, unthreaded end; a conductive fitting for connection to the smooth, unthreaded end of said rod, said fitting having an internal bore and a bore opening, said fitting internal bore including a threaded guide portion and a threaded gripping portion, the threaded guide portion being closer in proximity to the fitting bore opening than the threaded gripping portion, the diameter between the crests of the threads in the guide portion being greater than the diameter between the crests of said threaded gripping portion, said rod unthreaded end diameter being less than or equal to the diameter between the crests of the guide portion and greater than the diameter between the crests of the gripping portion, whereby when the rod end is driven to the depth of the internal bore of the fitting, the fitting guide portion will guide the smooth, unthreaded end of the rod into coaxial alignment with the axis of the bore of the fitting and the gripping portion will hold the rod in engagement with the fitting.
Claim 2
Dependent Claim
181 words
A ground rod and fitting, comprising: a conductive rod having a smooth, unthreaded end; a conductive fitting for connection to the smooth, unthreaded end of said rod, said fitting having an internal bore and a bore opening, said fitting internal bore including a threaded guide portion and a threaded gripping portion, the threaded guide portion being closer in proximity to the fitting bore opening than the threaded gripping portion, the diameter between the crests of the threads in the guide portion being greater than the diameter between the crests of said threaded gripping portion, said rod unthreaded end diameter being less than or equal to the diameter between the crests of the guide portion and greater than the diameter between the crests of the gripping portion, whereby when the rod end is driven to the depth of the internal bore of the fitting, the fitting guide portion will guide the smooth, unthreaded end of the rod into coaxial alignment with the axis of the bore of the fitting and the gripping portion will hold the rod in engagement with the fitting.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |