Patent ID: 7572190
Filing Date: 2009-08-11
Classification: A63G

Abstract:
1. A play apparatus comprising: a support frame adapted to rest on a floor; a seat; a longitudinal beam member pivotally coupled to the support frame, the seat disposed at a first end of the beam member; a spring coupled at a first end thereof to the beam member; a manually operated adjustment member for adjusting a coupling position of the spring longitudinally with respect to the beam member; an adjustment screw coupled to the frame; a threaded follower disposed on the adjustment screw, wherein the spring is coupled at a second end thereof to the threaded follower; a knob attached to the adjustment screw, whereby manual rotation of the knob moves the follower toward or away from the frame and thereby adjusts a rest height of the seat; wherein the adjustment member is constrained against displacement from the beam member at all times, including during adjustment, whereby the spring remains engaged between the beam member and the support frame at all times; and wherein movement of the follower toward or away from the frame vertically displaces the follower with respect to the floor.