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US3755616A Expired / Lapsed US ⏱️ 0.0 years remaining

Thermoplastic sealed-sheath covering upon electrical bus-bar conductors

Assignee: Westinghouse Electric Corp
•
Filing: 1971-09-15
•
Granted: 1973-08-28
•
Expires: 1991-09-15
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Abstract

Abstract An improved and relatively inexpensive electrical conductor, such as a bus-bar, or feeder conductor, of aluminum or copper, for example, is provided with a thermoplastic elongated tubular sheath, or sheath tubing, such as polyvinyl chloride heatreactive tubing of resinous material, having the ends of the sheath, or tubing, sealed, in a water-tight fashion to the busbar by a thermoplastic resinous tape material. In one method of the invention, the resinous tape may be wound adjacent the outer ends of the bus-bar at spaced areas thereon, and the thermoplastic tubing subsequently pulled, as a second operation, upon the bus-bar and heat shrunk into place over the aforesaid spaced taped areas. Another alternate method for sealing the thermoplastic sheath tubing to the bus-bar, is to heat-shrink the thermoplastic insulating tubing, or ''''boot'''' upon the bus-bar after pulling it into place, scalp excess tubing to a specified dimension upon the bus-bar, and then band or tape each of the scalped ends of the tubing, or ''''boot'''' with a suitable thermoplastic resinous tape material, such, for example, as polyvinyl chloride adhesive tape.

Inventors

  • 👤 J Toth
  • 👤 E Ind Walker

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 15:03
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/38; B29C63/42; H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/2825; H02; H02G; H02G15/00; H02G15/08; H02G15/18; H02G15/1806; B29K; B29K2027/00; B29K2027/06; H02G3/00; H02G3/02; H02G3/04; H02G3/0462; H02G3/0487; Y; Y10; Y10S; Y10S174/00; Y10S174/08

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 56 words
An elongated bus bar having an insulating sheath tubing of polyvinyl chloride disposed thereabout, both ends of the insulating tubing being sealed in water-tight manner to the bare bus bar surface of said elongated bus bar by polyvinyl chloride resinous tape, whereby liquid may not penetrate between the inner bus bar and the outer sheath tubing.
Claim 2
Dependent Claim 26 words
The combination according to claim 2, wherein at least one of the taped ends of the sheath tubing is covered with additional tape for handling facility.
Claim 3
Dependent Claim 78 words
An elongated bus bar of appreciable length having an insulating preformed sheath tubing disposed thereabout and in physical contact with the bare bus bar over a substantial portion of the length thereof, adhesive means comprising polyvinyl chloride resinous tape for sealing both ends of the insulating preformed tubing in water-tight manner to the bare bus bar surface, whereby liquid may not penetrate between the inner bus bar surface and the outer preformed sheath tubing in physical contact therewith.
Claim 4
Dependent Claim 21 words
The combination of claim 4, wherein the taped ends of the sheath tubing are covered with additional tape for handling facilities.

References Cited (Backward Citations)

US10344A Cited
US2043796A Cited
US2027962A Cited
GB883155A Cited
US3086888A Cited
US3417176A Cited
US3345455A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-08-27 1977-02-26 1977-08-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-27 1981-02-26 1981-08-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-27 1985-02-26 1985-08-28 $7700.00 Window Closed / Lapsed

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