Patent ID: 10170902

Abstract:
An extension and retraction device including a housing and a slip ring mounted within the housing. The slip ring includes a stator and rotor rotatably mounted therein. The rotor includes rotor leads and annular sections defined circumferentially around the rotor. Each rotor lead includes opposite ends with one end electrically connected to one of the annular sections. The stator includes a contact for each annular section in sliding electrical engagement with the annular section. Each contact includes a stator lead having one end electrically connected to the stator and another end extending out of an opening of the housing. A reel is mounted within the housing with the reel and rotor rotatable about a substantially common axis. A cord extending through another opening of the housing is retracted into the housing when the reel rotates in one direction, and the cord is extended from the housing when the cord is pulled and the reel rotates in the opposite direction.