Patent ID: 6781275
Filing Date: 2004-08-24
Classification: H01R

Abstract:
A carbon brush spring system within a housing comprising:a rotatable collector; a carbon brush in electrical contact with and located at a terminal surface of said collector; mechanical stabilizing means for maintaining a stable position of said brush with respect to said collector, said stabilizing means acting in both radial and tangential directions with respect to said collector; a spring functionally associated with said brush and positioned away from said terminal surface, said spring comprising: i. means for electrical contact with an external electrical element; ii. a carbon brush part affixed to said spring part; iii. a single body spring part having a substantially symmetrical structure tangential to rotational direction of said collector, said structure comprising a rectangular cross-section; and iv. a first and second section cooperating to form said spring, each of said first and second section comprising an intermediate portion positioned between said carbon brush and said housing and located further apart than other first and second section portions, said other first and second section portions being located at said carbon brush or said housing, and wherein each of said first and second section has at least two bends and is disposed in a plane that is substantially perpendicular to an axis of collector rotation; and attachment facilities effecting a fixed connection between said spring and said housing such that said first and second sections form a substantially symmetrical arrangement between said carbon brush part and said attachment facilities.