Wind motors

Claim 1

A WIND MOTOR DESIGNED SO AS TO BE SUITABLE FOR USE IN VEHICLES, SUCH AS AIRCRAFT FOR DRIVING ACCESSORIES, FOR EXAMPLE, HYDRAULIC PUMPS, AND BEING MOVABLE FROM A STOWED INOPERABLE POSITION WITHIN THE VEHICLE TO AN EXTENDED OPERABLE POSITION EXTERNALLY OF AND IN THE SLIPSTREAM OF THE VEHICLE, AND BEING RETRACTABLE FROM THE EXTENDED POSITION TO THE STOWED POSITION, SAID WIND MOTOR COMPRISING IN COMBINATION: (A) A BODY PORTION, HAVING PIVOTAL MOUTING MEANS TO AFFORD THE WIND MOTOR ITS EXTENDABILITY AND RETRACTABILITY, (B) A BLADED ROTOR MOUNTED FOR ROTATION UPON THE BODY PORTION, SUCH ROTATION OCCURING WHEN THE WIND MOTOR IS IN ITS EXTENDED CONDITION, (C) POSITIONING MEANS OPERABLE TO ENSURE THAT THE BLADED ROTOR IS STOPPED IN A PREDETERMINED ROTATIONAL POSITION SO THAT THE WIND MOTOR PRESENTS ITS OVERALL SMALLEST CROSS-SECTIONAL AREA TO AN OPENING IN THE WALL OF THE VEHICLE FOR RETRACTION OF THE WIND MOTOR THROUGH THAT OPENING, AND, (D) SPEED-GOVERNOR-CONTROLLED HYDRAULICALLY-OPERABLE PITCH-CHANGING MECHANISM FOR ADJUSTING THE PITCH OF THE BLADES TO MAINTAIN SUBSTANTIALLY CONSTANT SPEED OPERATION OF THE ROTOR, A PISTON-AND-CYLINDER DEVICE, FORMING PART OF SAID MECHANISM, BEING OPERABLY CONNECTED TO THE BLADES AND HAVING DISPLACEABLE STOP MEANS WHICH, WHEN THE GOVERNOR IS OVERRIDDEN TO INITIATE STOPPING OF THE ROTOR PRIOR TO RETRACTION, PERMITS MOVEMENT OF THE BLADES JUST INTO THE REVERSE PITCH RANGE, BUT WHICH, WHEN THE ROTOR HAS BEEN STOPPED IN SAID PREDETERMINED ROTATIONAL POSITION AND AFTER RETRACTION HAS COMMENCED, IS AUTOMATICALLY DISPLACEABLE THEN TO MOVE THE BLADES JUST BACK INTO THE POSITIVE PITCH RANGE.