Abstract: An tool for installation of a ball joint into an interference-fit accommodating hole in a control arm of a vehicle is provided, which operates as an integrated unit. A body of the ball joint compressor includes an upper and a lower support, spaced apart and fixedly interconnected by a pair of bilateral supports. A movable compression member is mounted to the body of the ball joint compressor, to allow movement thereof between the upper and lower supports along a central vertical axis. An advancing screw is threaded through the lower support, providing a means by which movement may be imparted to the movable compression member. The upper support includes an upper stop extending downwardly and including a cavity for receiving a portion of a ball joint which protrudes through an accommodating hole in a control arm during compression. This configuration allows the upper stop to contact the control arm from above, adjacent to the accommodating hole for the ball joint.

Abstract: An exercise appliance for conditioning the abdominal muscles of an individual includes a structure presenting a resiliently yieldable contact surface which provides a restoring force against a force applied thereto. The contact surface has a contour suitably sized and shaped to be at least partially fittable in the space formed between a support surface and a static lordotic curve of a lumbar back of an individual positioned with a remaining portion of the back of the individual in contact with the support surface. The structure may provide the resilient yieldability in a form permitting deformation of the contact surface, or may alternately include a rigid member arranged to permit resistive movement thereof in a direction towards a plane of the support surface.