Self-propelling power unit for golf bag cart

Claim 1

IN A SELF-CONTAINED PORTABLE POWER UNIT FOR A GOLF BAG CART, A U-SHAPED FRAME, AN AXLE FIXEDLY SECURED TO SAID U-SHAPED FRAME AND MOUNTING A PAIR OF TRACTION WHEELS, A MOTOR MOUNT POSITION BETWEEN SAID TRACTION WHEELS AND OVERLYING SAID AXLE, SAID MOTOR MOUNT INCLUDING AN ELECTRIC MOTOR OPERATIVELY CONNECTED TO A DRIVE SHAFT HAVING DRIVE ROLLERS POSITIONED FOR CONTACT WITH SAID TRACTION WHEELS SAID MOTOR MOUNT BEING FREE FOR LIMITED VERTICAL MOVEMENT RELATIVE TO SAID TRACTION WHEELS, WHEREBY THE WEIGHT OF SAID MOTOR MOUNT IS UTILIZED TO BIAS SAID DRIVE ROLLERS INTO DRIVING ENGAGEMENT WITH SAID TRACTION WHEELS, SAID DRIVE ROLLERS CONTACTING THE PERIPHERIES OF SAID TRACTION WHEELS AT AN ANGLE OF SUBSTANTIALLY 45* FROM A VERTICAL PLANE EXTENDING THROUGH THE AXIS OF ROTATION OF SAID TRACTION WHEELS, SAID MOTOR MOUNT BEING SECURED TO A BASE PLATE CONNECTED AT ONE END ONLY TO SAID U-SHAPED FRAME, SAID U-SHAPED FRAME HAVING SPACED APART SETS OF SLOTS THEREIN, SAID BASE PLATE HAVING DEPENDING PINS SELECTIVELY ENGAGEABLE IN SAID SETS OF SLOTS WHEREBY SAID MOTOR MOUNT MAY BE DISPLACED RELATIVE TO SAID TRACTION WHEELS.