Clevis pin with spring urged detents and means to limit spring movement

Claim 1

A QUICK RELEASE CLEVIS PIN FOR ROTARY MEMBERS HAVING ALIGNED OPENINGS THEREIN, SAID CLEVIS PIN COMPRISING: A CYLINDRICAL BODY RECEIVABLE IN THE ALIGNED OPENINGS AND HAVING A LATERALLY PROJECTING SHOULDER ADJACENT ONE END A COAXIAL BORE IN THE OTHER END; A CAP CLOSING THE OUTER END OF SAID BORE TO DEFINE WITH SAID BORE, A SPRING CHAMBER, SAID BODY ALSO HAVING OPPOSED RADIAL PASSAGES EXTENDING FROM SAID CHAMBER, OUTWRDLY TO THE EXTERIOR OF SAID BODY; A BALL DETENT CARRIED IN EACH OF SAID RADIAL PASSAGES AND MOVABLE INWARDLY AND OUTWARDLY BETWEEN INNER RETRACTED AND OUTER EXTENDED POSITIONS, SAID BALL DETENTS PROJECTING RADIALLY BEYOND THE EXTERIOR OF SAID BODY WHEN IN SAID EXTENDED POSITIONS, THE OUTER ENDS OF SAID RADIAL PASSAGES HAVING MEANS PROVIDING A RESTRICTED PORTION TO LIMIT OUTWARD MOVEMENT OF SAID BALL DETENTS; A U-SHAPED COMPRESSION SPRING HAVING AT LEAST TWO OUTWARDLY BIASED ARMS, SAID SPRING BEING POSITIONED WITHIN SAID CHAMBER WITH SAID ARMS EXTENDING GENERALLY AXIALLY OF SAID BORE AND URGING SAID BALL DETENTS TO SAID OUTER EXTENDED POSITION, SAID ARMS, SAID BALL DETENTS AND SAID BORE BEING RELATIVELY DIMENSIONED SO THAT SAID ARMS ENGAGE THE WALL OF SAID BORE WITH SAID BALL DETENTS SPACED RADIALLY INWARDLY FROM SAID MEANS, WHEREBY THE FORCE WITH WHICH SAID BALL DETENTS ARE URGED OUTEARDLY AGAINST THE OUTER RESTRICTED END OF SAID RADIAL PASSAGES UPON ROTATION OF THE ROTARY MEMBERS IN UNAFFECTED BY SAID SPRING.