Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1976-06-01
1978-07-11
Gordon, Clarence R.
Machine element or mechanism
Control lever and linkage systems
Hand operated
138138, 138141, 156 53, 156143, 156149, 15624413, 156500, F16C 110
Patent
active
040994252
ABSTRACT:
A pushpull cable conduit is made by continuously moving a tubular mandrel through a crosshead extruding die, forming a tape of micro-porous polytetrafluoroethylene resin into cylindrical form covering the mandrel as it enters the extruding die, extruding an outer layer of fluid polymeric material over the cylindrical covering in the presence of heat, helically wrapping contiguous wires over said outer layer to form a wire layer, extruding an outer covering of thermoplastic material over the wire layer, and removing the tubular mandrel. The porosity of the polytetrafluoroethylene covering insures a good heat bond with the outer layer of fluid polymeric material and also provides a lubricant reservoir in its inner surface, thereby minimizing friction with the cable core and greatly reducing sound transmission.
REFERENCES:
patent: 2564602 (1951-08-01), Hurst
patent: 3063303 (1962-11-01), Cadwallader
patent: 3138511 (1964-06-01), Cadwalader
patent: 3176538 (1965-04-01), Hurlow
patent: 3249666 (1966-05-01), French
patent: 3258031 (1966-06-01), French
patent: 3320665 (1967-05-01), Morse
patent: 3357456 (1967-12-01), Grawey
Gordon Clarence R.
Samuel Moore and Company
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