US3659406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stranded cable open strand detector
Assignee: WILSON KING AND CO
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Filing: 1970-07-27
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Granted: 1972-05-02
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Expires: 1990-07-27
Abstract
Abstract Cable inspection means comprise a probe arranged to move along the periphery of the cable and, upon encountering a gap in the strands, to move inwardly and thus provide an indication of a fault in the cable. The inward movement of the probe can be used to stop the operation of an associated cable winding machine, and/or to illuminate a relevant point on a mimic diagram of an installation including the inspection means.
Inventors
- 👤 Palmer Kipperberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:04
CPC Classifications
D; D07; D07B; D07B3/00; D07B3/02; D07B3/06; D07B7/00; D07B7/02; D07B7/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
171 words
Stranded-cable inspection means comprising: a. a probe arranged to engage and move lengthwise over the surface of a helically stranded cable to be inspected; b. a cable-engaging end of the probe of such size that the probe can move inwardly of the said cable should any outside strand of the cable be missing; c. a member carrying the probe; d. an electrically conductive surface on the said member; e. electrical insulation electrically isolating the said cableengaging end of the probe from the said conductive surface; f. biasing means by which the cable-engaging end of the probe is biased to move inwardly of the said cable surface; the arrangement being such that when the said probe end moves inwardly of the cable as the cable-engaging end of the probe enters a cavity resulting from a missing outside strand, the said electrically conductive surface engages the said cable surface to complete an electrical circuit including the cable; and g. indicating means arranged to provide an indication when the said electrical circuit is completed.
Claim 2
Dependent Claim
171 words
Stranded-cable inspection means comprising: a. a probe arranged to engage and move lengthwise over the surface of a helically stranded cable to be inspected; b. a cable-engaging end of the probe of such size that the probe can move inwardly of the said cable should any outside strand of the cable be missing; c. a member carrying the probe; d. an electrically conductive surface on the said member; e. electrical insulation electrically isolating the said cableengaging end of the probe from the said conductive surface; f. biasing means by which the cable-engaging end of the probe is biased to move inwardly of the said cable surface; the arrangement being such that when the said probe end moves inwardly of the cable as the cable-engaging end of the probe enters a cavity resulting from a missing outside strand, the said electrically conductive surface engages the said cable surface to complete an electrical circuit including the cable; and g. indicating means arranged to provide an indication when the said electrical circuit is completed.
Claim 3
Dependent Claim
79 words
Cable inspection means according to claim 1, in which: a. the probe is formed of electrically insulating material; b. a pivoted metal arm carries the probe; c. the biasing means tend to bring the metal arm into contact with the cable; d. the probe normally holds the metal arm out of contact with the cable; and e. when the probe encounters a cavity in the cable surface, the biasing means bring the metal arm into contact with the cable.
Claim 4
Dependent Claim
46 words
Cable inspection means according to claim 2, in which a. the pivoted metal arm is mounted in an adjustable manner permitting adjustment of the probe relative to the cable; b. the probe can by this adjustment readily be set to serve with different diameters of cable.
Claim 5
Dependent Claim
67 words
Cable inspection means according to claim 1, in which a. the indicating means includes a warning lamp; b. a controlled rectifier is arranged when conductive to energize the said lamp; energized c. the controlled rectifier includes a trigger electrode; d. the said electrical circuit is arranged to provide an electrical trigger pulse to said trigger electrode upon the probe encountering a cavity in the said cable surface.
Claim 6
Dependent Claim
66 words
Cable inspection means according to claim 4, in which: a. a plurality of warning lamps is provided; b. a display panel pictorially represents a cable winding machine to which the cable inspection means is applied; and c. the said warning lamps are positioned on the display panel and are energised to indicate the occurrence of cable faults at different locations in the said cable winding machine.
Claim 7
Dependent Claim
76 words
Cable inspection means according to claim 4, in which: a. the inspection means are applied to a cable winding machine; b. a main driving motor is arranged to drive the said cable winding machine; c. the said controlled rectifier is arranged to control the energization of the said main driving motor; d. the said controlled rectifier is arranged to de-energize the said main driving motor when the probe encounters a cavity in the said cable surface.
References Cited (Backward Citations)
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US2770091A
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US2944378A
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US3035395A
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US3287887A
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US3460334A
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |