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US3843829A Expired / Lapsed US ⏱️ 0.0 years remaining

Center strength member cable

Assignee: Bendix Corp
•
Filing: 1973-03-02
•
Granted: 1974-10-22
•
Expires: 1993-03-02
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Abstract

Abstract A high strength, lightweight electrical cable having a center strength wire rope member and a plurality of shielded and insulated conducting wires arranged around the center strength member is disclosed, the conducting wires being shielded through the use of a spirally wound layer of conducting material and being cushioned through the use of a soft insulation layer and a plastic filler interposed between the center strength member and the conductors. The conducting wires are formed in bundles and are spirally wound around the center insulator and strength member. A sheath consisting of an open braid of nylon strands secures the conductor bundle, and the entire assembly is jacketed by means of an extruded layer of polyurethane which penetrates into the nylon braid, thereby providing a strong waterproof shield for the conductors. The center strength member is torquebalanced to avoid twisting and imparting rotational movement to a suspended load member.

Inventors

  • 👤 R Bridges
  • 👤 J Jason

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 01:30
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/04

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 104 words
An electrical cable comprising a torque-balanced wire rope member capable of carrying substantially the entire load on said cable, a thick layer of soft insulating material surrounding said wire rope member, a plurality of conductor members of small diameter relative to said cable spirally wound around said layer, each of said members including at least one conducting wire, an insulating layer around said wire, a spirally wound shield of conducting wires in at least some of said conductor members and an insulating layer around said shield, an open braid of fabric material wrapped around said conductor members, and an insulating jacket surrounding said braid.
Claim 2
Dependent Claim 104 words
An electrical cable comprising a torque-balanced wire rope member capable of carrying substantially the entire load on said cable, a thick layer of soft insulating material surrounding said wire rope member, a plurality of conductor members of small diameter relative to said cable spirally wound around said layer, each of said members including at least one conducting wire, an insulating layer around said wire, a spirally wound shield of conducting wires in at least some of said conductor members and an insulating layer around said shield, an open braid of fabric material wrapped around said conductor members, and an insulating jacket surrounding said braid.
Claim 3
Dependent Claim 42 words
An electrical cable as set forth in claim 1 wherein most of said conductor members include a plurality of conducting wires, each of said wires is insulated and said shield surrounds all of the said plurality of wires in each conductor member.
Claim 4
Dependent Claim 28 words
An electrical cable as set forth in claim 1 wherein said conductor members are wound around said soft insulating layer in a spiral angle of approximately twenty degrees.
Claim 5
Dependent Claim 25 words
An electrical cable as set forth in claim 2 wherein said insulating jacket is an extruded layer of polyurethane forced through said braided fabric material.
Claim 6
Dependent Claim 29 words
An electrical cable as set forth in claim 2 wherein a layer of soft plastic filler material is inserted around said soft insulating material and between said conductor members.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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