초록 ▼

An improved sliding contact for use with a propeller ice protection system is provided. According to an aspect of the invention, a silver graphite brush forms a sliding contact with a hardened copper alloy slip ring. A sliding contact according to the invention demonstrates improved performance in a

An improved sliding contact for use with a propeller ice protection system is provided. According to an aspect of the invention, a silver graphite brush forms a sliding contact with a hardened copper alloy slip ring. A sliding contact according to the invention demonstrates improved performance in an oil contaminated environment.

대표청구항 ▼

A device for transferring electrical power from an electrical power supply mounted on an aircraft to an electrical load mounted on an aircraft propeller, comprising: a slip ring assembly configured for attachment to the aircraft propeller, said slip ring assembly having a plurality of slip rings com

A device for transferring electrical power from an electrical power supply mounted on an aircraft to an electrical load mounted on an aircraft propeller, comprising: a slip ring assembly configured for attachment to the aircraft propeller, said slip ring assembly having a plurality of slip rings comprised of a copper alloy having a surface hardness of at least a Rockwell B60, said plurality of slip rings being adapted to be electrically connected to the electrical load; and, a brush assembly configured for attachment to the aircraft, said brush assembly having a plurality of electrically conductive brushes for conducting electrical power to the slip rings with at least one brush per slip ring, each brush being comprised of a carbonaceous matrix impregnated with silver on the order of 45% to 70% by weight, a plurality of springs with at least one spring per brush for urging each brush against a slip ring, a housing with a plurality of apertures for receiving said plurality of springs and for slidably receiving said plurality of brushes in alignment with said slip rings, a plurality of electrical connectors attached to said housing for connection with the power supply with at least one electrical connector corresponding to each slip ring, and a plurality of flexible shunts with at least one flexible shunt per brush that electrically connects each brush that aligns with a single slip ring to said electrical connector corresponding to that slip ring.