Self-operable detachable power unit attachment for wheel chairs and power control unit therefor

Claim 1

IN THE COMBINATION OF A WHEEL CHAIR AND AN ELECTRICAL DRIVING APPARATUS THEREFOR, SAID WHEEL CHAIR BEING OF THE TYPE HAVING A FRAME STRUCTURE FOR SUPPORTING A PERSON, A PLURALITY OF WHEELS AT LEAST TWO OF WHICH ARE DISPOSED ON OPPOSITE SIDES OF THE FRAME STRUCTURE TO CONSTITUTE DRIVE WHEELS, AND A PAIR OF TILTING LEVERS EXTENDING REARWARDLY FROM THE FRAME STRUCTURE AND BETWEEN THE DRIVE WHEELS, SAID ELECTRICAL DRIVING APPARATUS BEING OF THE TYPE HAVING A PAIR OF REVERSIBLE ELECTRIC MOTORS EACH HAVING A DRIVE MEANS ROTATABLE THEREBY AND INDIVIDUALLY ASSOCIATED WITH THE DRIVE WHEELS, BATTERY MEANS FOR SUPPLYING CURRENT TO THE MOTORS, CONTROL MEANS CONNECTED BETWEEN THE MOTORS AND THE BATTERY MEANS TO SELECTIVELY ENERGIZE THE MOTORS TO BOTH DRIVE AND STEER THE WHEEL CHAIR BY THE RELATIVE ROTATION OF THE DRIVE MEANS, AND A FRAME MEANS FOR SUPPORTING THE MOTORS AND BATTERY MEANS ON THE REAR OF THE WHEEL CHAIR AND BETWEEN THE DRIVE WHEELS, APPARATUS FOR REMOVABLY MOUNTING AND RELEASABLY CONNECTING THE FRAME MEANS TO THE WHEEL CHAIR COMPRISING: A PAIR OF HORIZONTALLY SPACED PARALLEL SUPPORT MEANS SECURED TO SAID FRAME MEANS FOR RECEIVING SAID TILTING LEVERS IN TELESCOPED ENGAGEMENT THEREWITH; AND A PAIR OF CONNECTING ARM MEANS INDIVIDUALLY CONNECTED TO SAID FRAME MEANS AND ADAPTED FOR RELEASABLY RETAINED ENGAGEMENT WITH THE FRAME STRUCTURE OF THE WHEEL CHAIR.