Folding mechanism

• US 3,153,455 A
• Filed: 10/15/1962
• Issued: 10/20/1964
• Est. Priority Date: 10/15/1962
• Status: Expired due to Term

• Current Assignee: Victor S. Mosinskis
• Original Assignee: Victor S. Mosinskis
• Inventors: Mosinskis, Victor S.
• Application Number:
  US04/230,460
• Time in Patent Office: 736 Days
• US Class Current: 416/105
• CPC Class Codes: B64C 27/50 Blades foldable to facilitate stowage of aircraft

Claims

1. A MECHANISM FOR FOLDING AND UNFOLDING ROTOR BLADE MEANS OF A ROTARY WING AIRCRAFT ABOUT HINGE PINS IN THE ROTOR SYSTEM COMPRISING ACTUATING MEANS HAVING TORQUE OUTPUTS IN OPPOSITE DIRECTIONS, CONTROL MEANS OPERATIVELY CONNECTED TO SAID ACTUATING MEANS TO CAUSE A FIRST OF SAID TORQUE OUTPUTS TO BE OPERATIVE AND A SECOND OF SAID TORQUE OUTPUTS TO BE INOPERATIVE DURING UNFOLDED CONDITION OF SAID ROTOR BLADE MEANS, LOCK MEANS IN SAID MECHANISM RESPONSIVE TO SAID ACTUATING MEANS, SAID ACTUATING MEANS MOVING SAID LOCK MEANS TO ITS LOCKING POSITION THROUGH SAID FIRST TORQUE OUTPUT, AND MEANS RESPONSIVE TO THE FIRST OF THE TORQUE OUTPUTS OF SAID ACTUATING MEANS FOR ADVANCING SAID ROTOR BLADE MEANS ABOUT A LEAD-LAG AXIS IN THE ROTOR SYSTEM TO A FOLDING POSITION AFTER SAID LOCK MEANS IS IN LOCKING POSITION, SAID CONTROL MEANS BEING RESPONSIVE TO SAID ACTUATING MEANS TO CAUSE SAID FIRST TORQUE OUTPUT TO BECOME INOPERATIVE AND SAID SECOND TORQUE OUTPUT TO BECOME OPERATIVE WHEN THE MEASN RESPONSVE TO THE FIRST OF THE TORQUE OUTPUTS OF SAID ACTUATING MEANS HAS ADVANCED A ROTOR BLADE TO ITS FOLDING POSITION WHEREBY SAID ACTUATING MEANS CAN MOVE THE ROTOR BLADE MEANS TO ITS FOLDED POSITION.