Patent ID: 8651576

Claim:
An adjustable seat for a water vessel comprising: a seat member; a back support; a seat frame for the seat member, the seat frame being coupled to the back support, wherein the seat frame includes outward-projecting bearings extending from the seat frame, the bearings including a vertical through-hole; an elevator mechanism engaging the seat frame and configured to permit vertical adjustment of the position of the seat member, wherein the elevator mechanism includes: an elevator frame, an elevator traveler housed within the elevator frame, a vertically-oriented, threaded shaft engaging the elevator frame, and an adjuster rotationally engaging the threaded shaft and engaging the traveler so that rotation of the adjuster causes vertical movement of the elevator traveler up or down with respect to the threaded shaft; wherein the vertical through-hole permits passage therethrough of the threaded shaft, wherein the through-hole has a flared top and a flared bottom with a pinched central waist, thereby permitting angular movement of the bearings relative to the threaded shaft, and a strap connecting the back support to the seat frame.