Patent ID: 7219768

Claim:
A kit for retrofitting an in ground lift having an antirotation tube with a load holding device, comprising: an elongated, cylindrical tube; a nut connected to said tube at one end thereof; a plurality of first slots spaced at predetermined locations in one side of said tube; a plurality of second slots spaced generally in alignment with corresponding ones of said first slots and located on a side of said tube opposite said one side; an additional slot in said opposite side and between said nut on the one hand and said second slots on the other hand; a plurality of elongated dogs each having a length greater than said outside diameter, one for each aligned pair of said first and second slots; a plurality of pivot pins, one for each dog, within the interior of said tube and each journaling an associated dog for rotation about an axis mutually transverse to said tube and a corresponding one of said aligned pairs of slots between a first position wholly within said tube and a second position wherein opposite ends of said dogs extend out of both the first and second slots of the associated pair, said axis and/or said dogs further being such that each dog has more mass between said axis and one end of the dog than the other end; a manual actuator pivoted within said tube and movable between a first position within said tube and a second position extending exteriorly of said tube and a linkage connecting said actuator and each of said dogs and movable in response to movement of said actuator to said actuator second position to allow movement of said dogs from said dog second positions toward said dog first positions, and responsive to movement of said actuator toward said actuator first position to allow said dogs to move toward said dog second positions.