Detachable power unit for a golf bag cart

In combination, a golf cart having a handle and a pair of laterally spaced-apart ground engaging wheels;

• and a detachable power unit for said golf cart comprising:
• an attaching frame;
• first pivotal attachment means at one end of said attaching frame for detachably connecting said attaching frame to said golf cart and to enable relative pivotal movement between said attaching frame and said golf cart about a horizontal axis;
• a driving frame;
• second pivotal attachment means at an opposite end of said attaching frame for detachably connecting said driving frame to said attaching frame and to enable relative pivotal movement between said driving frame and said attaching frame about a vertical axis, said second pivotal attachment means comprising a sleeve and a shaft and electrically non-conductive bearing means between said sleeve and said shaft to electrically insulate said attaching frame from said driving frame;
• an electrical battery rigidly and stationarily mounted on said attaching frame between said ends;
• a ground wheel journalled for rotation on said driving frame rearwardly of said second pivotal attachment means, said driving frame being swingably mounted on said bearing means about said vertical axis to provide a castering effect for said wheel as said golf cart and power unit are steered by said handle;
• an electric motor carried on said driving frame;
• and drive means on said driving frame connecting said motor and said wheels.