US3565401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical grounding device
Assignee: Individual
•
Filing: 1968-08-28
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Granted: 1971-02-23
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Expires: 1988-08-28
Abstract
Abstract An apparatus for grounding electrical conductor during stringing operations. The apparatus comprises a spring loaded grounding roller secured to a stringing block. Spring loading of the grounding roller toward the stringing sheave mounted in the block maintains electrical contact between the grounding roller and the conductor.
Inventors
- 👤 Carlos W Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:47
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/64; H02; H02G; H02G1/00; H02G1/02; H02G1/04; H02G7/00; H02G7/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
An electrical-grounding device for use in stringing electrical conductor comprising, in combination, a stringing block having a stringing sheave rotatably mounted therein on an axle, a grounding roller, said grounding roller supported by a pair of arms and mounted from the top of said stringing block and rotating about an axle parallel to the axle of the sheave in said stringing block, said arms detachably mounted from the top of said stringing block, said grounding roller having a peripheral groove and spring means urging said grounding roller toward said sheave.
Claim 2
Dependent Claim
90 words
An electrical-grounding device for use in stringing electrical conductor comprising, in combination, a stringing block having a stringing sheave rotatably mounted therein on an axle, a grounding roller, said grounding roller supported by a pair of arms and mounted from the top of said stringing block and rotating about an axle parallel to the axle of the sheave in said stringing block, said arms detachably mounted from the top of said stringing block, said grounding roller having a peripheral groove and spring means urging said grounding roller toward said sheave.
Claim 3
Dependent Claim
60 words
The electrical-grOunding device of claim 1 wherein said grounding roller is supported by a pair of arms, said arms having upper cuffs and lower cuffs, said upper cuffs rotatably engaging over fingers extending outwardly from a mounting bracket secured to the top of said stringing block and said lower cuffs engaging over the axle about which said grounding roller rotates.
Claim 4
Dependent Claim
24 words
The electrical-grounding device of claim 2 wherein said stringing block has a side plate openable above the axle about which said stringing sheave rotates.
Claim 5
Dependent Claim
63 words
The electrical-grounding device of claim 3 wherein each of said arms is adjustable in length and comprises an upper cuff, a lower cuff, and turnbuckle means, said lower cuffs secured to the axle about which said grounding roller rotates, said turnbuckle means threadedly engaging a shaft secured to one of said cuffs and said turnbuckle means rigidly secured to the other said cuff.
Claim 6
Dependent Claim
73 words
The electrical-grounding device of claim 4 wherein said spring means engages around said fingers extending outwardly from said mounting bracket between said mounting bracket and said arms, said spring means contacts said mounting bracket and said arms supporting said grounding roller, said openable side plate is openable by hinge means, said hinge means located above the axle about which said stringing sheave rotates and key means securing said openable side plate in position.
Claim 7
Dependent Claim
106 words
The electrical-grounding device of claim 5 wherein the lower cuffs of said arms are secured to said axle about which said grounding roller rotates by set screws, said mounting bracket is adapted to support the entire assembly from insulator means, said mounting bracket has a knob extending downwardly and engaging in a hanging clamp secured to the top of said stringing block, said mounting bracket having a lug associated with said knob to prevent turning of said knob in said hanging clamp, and wherein a grounding clamp is secured to the axle about which said grounding roller rotates, said grounding clamp communicating with a grounding wire.
Claim 8
Dependent Claim
18 words
The electrical-grounding device of claim 6 wherein said peripheral groove in said grounding roller has an arcuate configuration.
Claim 9
Dependent Claim
19 words
The electrical-grounding device of claim 6 wherein said peripheral groove in said grounding roller has a flat-bottomed V-shaped configuration.
Claim 10
Dependent Claim
28 words
The electrical-grounding device of claim 6 wherein said peripheral groove in said grounding roller has a width in excess of the diameter of the conductor to be strung.
Claim 11
Dependent Claim
17 words
The electrical-grounding device of claim 2 wherein said arms supporting said grounding roller are adjustable in length.
References Cited (Backward Citations)
US2786092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |