Centrifugal switching mechanisms for dynamoelectric machines

Claim 1

A CENTRIFUGAL SWITCHING MECHANISM FOR USE IN A MOTOR HAVING A ROTATABLE ASSEMBLY INCLUDING A ROTOR CARRIED ON A SHAFT, AN END SHIELD MEMBER ROTATABLY SUPPORTING ONE END OF SAID SHAFT AND A SWITCHING MEANS MOUNTED EXTERNALLY ON THE END SHIELD MEMBER AND INCLUDING A MOVABLE SWITCH ELEMENT FOR ACTUATING SAID SWITCHING MEANS, SAID CENTRIFUGAL SWITCHING MECHANISM COMPRISING: A SWITCH ACTUATOR PIVOTALLY SUPPORTED ON SAID END SHIELD MEMBER AND FORMED WITH A RADIAL AND AN AXIAL PORTION, SAID RADIAL PORTION BEING DISPOSED INTERNALLY OF THE END SHIELD MEMBER, SAID AXIAL PORTION EXTENDING THROUGH AN OPENING IN THE END SHIELD MEMBER AND BEING DISPOSED IN ENGAGING RELATION TO THE MOVABLE SWITCH ELEMENT OF THE SWITCHING MEANS, AND SAID RADIAL PORTION WHEN URGED IN AN AXIAL DIRECTION CAUSING A PIVOTAL MOVEMENT OF SAID SWITCH ACTUATOR AND EFFECTING A DISPLACEMENT OF THE SWITCH ELEMENT TO ACTUATE THE SWITCHING MEANS; AND A CENTRIFUGAL WEIGHT ASSEMBLY MOUNTED ON THE ROTATABLE ASSEMBLY FOR ROTATION THEREWITH AND INCLUDING A PAIR OF RELATIVELY MOVABLE CENTRIFUGAL WEIGHT MEMBERS, A PUSH COLLAR DISPOSED CONCENTRICALLY ABOUT THE SHAFT AND AXIALLY MOVABLE WITH RESPECT TO THE SHAFT, SAID PUSH COLLAR BEING CARRIED BY SAID CENTRIFUGAL WEIGHT MEMBERS, AND A BIASING MEANS JOINED WITH SAID CENTRIFUGAL WEIGHT MEMBERS TO URGE SAID PUSH COLLAR AGAINST SAID RADIAL PORTION OF THE SWITCH ACTUATOR AND HOLD THE RADIAL PORTION IN AN OUTWARD POSITION DURING THE STARTING CONDITION, AND SAID PUSH COLLAR BEING DISENGAGED FROM SAID RADIAL PORTION OF THE SWITCH ACTUATOR BY THE RETRACTING ACTION OF SAID CENTRIFUGAL WEIGHT MEMBERS WHEN THE MOTOR REACHES A PREDETERMINED SPEED THEREBY TO PERMIT SAID AXIAL PORTION OF THE SWITCH ACTUATOR TO BE MOVED WITH THE PUSH ELEMENT OF SAID SWITCHING MEANS IN NON-ACTUATING RELATION THEREWITH.