Electricity: conductors and insulators – Conduits – cables or conductors – Insulated
Patent
1984-10-18
1986-06-17
Grimley, A. T.
Electricity: conductors and insulators
Conduits, cables or conductors
Insulated
156 53, 156 56, 174121SR, H01B 702
Patent
active
045957932
ABSTRACT:
A relatively small pair size cable (20) comprising at least one conductor (22) which is insulated with polyvinyl chloride plastic material is provided with a flame retardant, smoke suppressive non-metallic sheath system (30). The sheath system has a relatively low thermal conductivity and provides a predetermined delay prior to the thermal decomposition of the conductor insulation. It includes an inner layer (31) of an aramid fibrous material which has a relatively high compressibility, a relatively low heat absorptivity, and a relatively low air permeability. The inner layer is enclosed by an outer jacket (40) of a fluoropolymer plastic material which is extruded about the inner layer.
REFERENCES:
patent: 2691694 (1954-10-01), Young
patent: 3425865 (1969-02-01), Shelton, Jr.
patent: 3903354 (1975-09-01), Dageforde
patent: 4150249 (1979-04-01), Pedersen
patent: 4151366 (1979-04-01), Betts et al.
patent: 4154976 (1979-05-01), Brorein
patent: 4284842 (1981-08-01), Arroyo et al.
patent: 4327001 (1982-04-01), West et al.
patent: 4401845 (1983-08-01), Odhner et al.
patent: 4510348 (1983-03-01), Arroyo et al.
Brochure; Business Machine Fabrics Technical Mannual; Albany International Precision Components Division.
Technical Data Sheet; Nomex.RTM. Tapes and Cloth Style X-547; W. S. Libbey Co.
Brochure Bulletin NX-17; Properties or Nomery Aramid Filament Yarns; Dec. 1981; DuPont.
Tagt High Temperatures Lead Wire; Radix Wire Co.; 2/72; Cleveland, Ohio 44132.
Brochure; Kynar.RTM. for Electrical/Electronic Applications Now/UL Classified for Plenum Cable Use.
Brochure; Kynar.RTM. A Versatile Engineering Resin with a Unique Balance of Physical and Chemical Properties for a Wide Range of Applications.
Fasig E. W.; Performance of Fluoropolymer Wire and Cable Insulation in Large-Scale Tests for Flammability, Smoke, Corrosive Off-Gases and Circuit Integrity 26th Internat. Wire & Cable Symposium; Cherry Hill, N.J.
Brochure Bulletin K-5; Characteristics and Uses of Kelvar.RTM. 11/16/77, Aramid High Molecular Organic Fiber; DuPont, 9/81.
Arroyo Candido J.
Thomas Palmer D.
AT&T - Technologies, Inc.
AT&T Bell Laboratories
Grimley A. T.
Nimmo Morris H.
Somers E. W.
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