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Retractable battery booster cables adapted to be mounted on an automobile and including a structure for connection to the battery of the automobile in which the booster cables are mounted and a spring wound reel to maintain the battery booster cables in compact, stored condition with the cables bein

Retractable battery booster cables adapted to be mounted on an automobile and including a structure for connection to the battery of the automobile in which the booster cables are mounted and a spring wound reel to maintain the battery booster cables in compact, stored condition with the cables being easily extended for use in boosting either the battery in the automobile in which the booster cables are mounted or a battery in an adjacent automobile. The retractable battery booster cables include a housing for the spring wound reel and a unique structure for electrically connecting the cables connected to the battery to the extendable and retractable booster cable. Additionally, the booster cables are provided with an alternate arrangement for connection to an adjacent vehicle with the alternate arrangement including a battery clamp arrangement or a plug-in type of connector.

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Retractable booster cables for connecting storage batteries of vehicles for boosting the electrical capacity of one of the batteries from the other of the batteries comprising a housing adapted to be mounted under the hood on a vehicle, a reel positioned in the housing, means rotatably supporting th

Retractable booster cables for connecting storage batteries of vehicles for boosting the electrical capacity of one of the batteries from the other of the batteries comprising a housing adapted to be mounted under the hood on a vehicle, a reel positioned in the housing, means rotatably supporting the reel in the housing, spring means interconnecting the reel and housing to spring bias the reel rotatably in one direction, a pair of booster cables wound on the reel with the reel being spring biased to wind the cables on the reel but enabling the cables to be pulled outwardly of the housing by rotating the reel against the spring means, means on the free end of each cable to electrically connect the cables to a battery associated with a vehicle different from the one in which the housing is mounted, means electrically connecting the other end of each cable to the battery in the vehicle in which the housing is mounted, said means connecting the ends of the cables to the battery in which the housing is mounted including means transmitting electrical energy from the terminal posts of the battery to the individual cables while maintaining electrical contact and circuit insulation during rotation of the reel, said means transmitting electrical energy from the battery in the vehicle in which the housing is mounted to the cables including concentric conductive rings mounted on the housing in a non-rotative manner, a pair of concentric conductive rings mounted on the reel in electrical contact with the rings on the housing, said rings on the housing being concentrically and radially spaced and the rings on the reel being concentrically and radially spaced, means mounting the rings on the housing biasing the rings on the housing toward and into engagement with the rings on the reel to maintain good electrical contact, and an insulation ring mounted on the housing between the concentric rings mounted thereon with the insulation ring being thicker than the conductive rings and extending laterally beyond the conductive rings on the housing and extending into the space between the rings on the reel to maintain the rings in alignment and electrically insulate the concentric rings from each other.