Mobile chair unit

Claim 1

MOBILE SUPPORTING MEANS COMPRISING A CHAIR BASE HAVING A SUBSTANTIALLY CONTINUOUS BOTTOM PERIPHERAL RIM NORMALLY ENGAGEABLY WITH THE FLOOR, MEANS ON THE UPPER PORTION OF SAID BASE TO RECEIVE AND BE CONNECTED TO A CHAIR SEAT TO BE SUPPORTED THEREBY, A PLURALITY OF CASTERS MOUNTED FOR VERTICAL MOVEMENT WITHIN SAID BASE ADJACENT THE PERIPHERY THEREOF AND NORMALLY POSITIONED WITH THE RIMS THEREOF ABOVE SAID BOTTOM RIM, REVERSIBLE POWER MEANS CARRIED WITHIN SAID BASE AND INTERCONNECTED TO SAID CASTERS, SAID POWER MEANS BEING OPERABLE WHEN MOVED IN ONE DIRECTION TO LOWER SAID CASTERS SIMULTANEOUSLY AND EQUALLY FOR REACTION AGAINST THE FLOOR TO RAISE SAID BASE SLIGHTLY ABOVE SAID FLOOR, THEREBY RENDERING SAID BASE MOBILE WITH RESPECT TO SAID FLOOR, AND OPERABLE IN THE OPPOSITE DIRECTION FOR RETRACTING SAID CASTERS WITHIN SAID BASE, THEREBY PERMITTING SAID BOTTOM RIM AGAIN TO ENGAGE THE FLOOR, CONTROL MEANS FOR SAID REVERSIBLE POWER MEANS FOR RENDERING SAID BASE MOBILE AT WILL, A CARRIER MOUNTED FOR VERTICAL MOVEMENT IN SAID BASE, A PROPELLING WHEEL JOURNALED IN SAID CARRIED, A MOTOR FOR ROTATING SAID WHEEL, AND CONTROL MEANS INCLUDING A HANDLE FOR LOWERING AND RAISING SAID CARRIER TO BRING SAID WHEEL INTO CONTACT WITH THE FLOOR OR FOR LIFTING SAID WHEEL ABOVE THE FLOR AT WILL.