US3863145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical fault detecting tool with fuse assembly and power line clamp device
Assignee: Cooper Industries LLC
•
Filing: 1973-08-29
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Granted: 1975-01-28
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Expires: 1993-08-29
Abstract
Abstract A fault detecting tool has a metal hook connectable to the end of a switch stick, a coiled connecting cable connected between the metal hook and a current limiting fuse, and a line clamp assembly connected to the fuse. The line clamp assembly has a spring biased arm adapted to clamp the assembly and fuse to a power line.
Inventors
- 👤 Robert W Kelly
- 👤 Stephen P Hassler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:39
CPC Classifications
H; H01; H01H; H01H85/00; G; G01; G01R; G01R31/00; G01R31/50; G01R31/58; H01R; H01R11/00; H01R11/11; H01R11/12; H01R11/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
144 words
An electrical fault detecting tool comprising: a current limiting fuse; a fuse assembly having a lower fitting attached and electrically connected to one end of the fuse and an upper assembly attached and electrically connected to the other end of said fuse, said upper assembly comprising a support section, a lifting and clamping arm having a clamp extension toward one end and a lifting eye toward the other end and rotatable about an axis and positioned to place said clamp extension in a cooperative position with said support section, and a means biasing said arm about said axis to bias set clamp extension against said support section to form a power line clamp device; an electrically conductive hook having a connection section adapted to be connected to a switch stick, and an insulated electrical connection cable connected between the hook and the lower fitting.
Claim 2
Dependent Claim
144 words
An electrical fault detecting tool comprising: a current limiting fuse; a fuse assembly having a lower fitting attached and electrically connected to one end of the fuse and an upper assembly attached and electrically connected to the other end of said fuse, said upper assembly comprising a support section, a lifting and clamping arm having a clamp extension toward one end and a lifting eye toward the other end and rotatable about an axis and positioned to place said clamp extension in a cooperative position with said support section, and a means biasing said arm about said axis to bias set clamp extension against said support section to form a power line clamp device; an electrically conductive hook having a connection section adapted to be connected to a switch stick, and an insulated electrical connection cable connected between the hook and the lower fitting.
Claim 3
Dependent Claim
92 words
An electrical tool according to claim 1 wherein said support section is adapted to hang over a power line, wherein said lifting and clamping arm is adapted to clamp a power line against the support section, wherein said lifting eye is adapted to receive a tool for lifting the fuse assembly, and wherein said means is a spring connected to bias the arm extension against the support section with a biasing strength selected to be opened by weight of the fuse assembly when supported by a tool passed through the lifting eye.
Claim 4
Dependent Claim
24 words
An electrical tool according to claim 1 wherein said hook comprises a brightly colored insulating sleeve extending over the end portion of the hook.
Claim 5
Dependent Claim
34 words
An electrical tool according to claim 3 wherein said fuse comprises a detonating assembly responsive to operation of the fuse to detonate and thereby provide an audible indication of the operation of the fuse.
Claim 6
Dependent Claim
39 words
An electrical tool according to claim 4 wherein said detonating assembly comprises a cover at the lower fitting that separates from the fuse upon operation of the detonating assembly to give a visual indication of operation of the fuse.
Claim 7
Dependent Claim
31 words
An electrical tool according to claim 5 wherein said lower fitting has a base enclosing the detonating assembly cover and said base has an opening for enabling viewing of the cover.
Claim 8
Dependent Claim
24 words
An electrical tool according to claim 1 wherein said hook comprises a brightly colored insulating sleeve extending over the end portion of the hook.
Claim 9
Dependent Claim
40 words
An electrical tool according to claim 1 also comprising a detonating assembly having a cover at the lower fitting that separates from the fuse upon operation of the detonating assembly to give a visual indication of operation of the fuse.
Claim 10
Dependent Claim
31 words
An electrical tool according to claim 8 wherein said lower fitting has a base enclosing the detonating assembly cover and said base has an opening for enabling viewing of the cover.
References Cited (Backward Citations)
US2128019A
Cited
US2234022A
Cited
US2233826A
Cited
US2427916A
Cited
US3026391A
Cited
US3193765A
Cited
US3243552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |