Patent ID: 7225566

Claim:
A male coupler portion adapted to mate with at least two different types of associated female coupler portions, said male coupler portion comprising: a frame comprising: (i) first and second arm pin-on locations adapted for connection to associated first and second arms, respectively; (ii) at least one tilt member pin-on location adapted for connection to an associated tilt member; (iii) first and second coupler halves each comprising: a first hook-engaging mount defined by a first member that is fixedly secured to and extends between first and second vertical ribs, said first hook-engaging mount adapted to be received into a hook of a female rib of a first type of associated female coupler portion; a first rib locking location comprising a first locking channel defined between said first and second vertical ribs so as to be vertically aligned with said first hook-engaging mount; a second hook-engaging mount defined by a second member that is fixedly secured to extends between said second vertical rib and a third vertical rib, said second hook-engaging mount adapted to be received into a hook of a female rib of a second type of associated female coupler portion that is different from the first type of associated female coupler portion; a second rib locking location comprising a second locking channel defined between said second and third vertical ribs so as to be vertically aligned with said second hook-engaging mount; and, a plunger pin slidably connected to the frame and movable between an extended position and a retracted position, said plunger pin, when extended, adapted to engage and retain an associated female coupler portion rib ear located in either one of said first and second rib locking channels.