Accession Number : ADD003521

Title :   Ball Bearing Electrically-Conductive Pulleys.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Weber,W R

Report Date : 02 Feb 1977

Pagination or Media Count : 12

Abstract : Two aluminum pulleys are mounted on berylium copper bearings and electrically bonded through a rotating joint to a pulley bracket. The pulleys are spring loaded against each other to provide proper pressure and peripheral ground to a control cable passing therebetween. High voltage short time duration currents or low voltage static currents in the control cables located outside the pressure hull are directed from the cables through the pulleys and bearings to the aircraft hull for grounding thereby preventing passage of the dangerous electrical pulses along the control cables to the inside of the aircraft. (Author)

Descriptors :   *Patent applications, *Hoists, Ball bearings, Electrical conductivity, Cables, Electrical grounding

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE