Seat mounting structure

Claim 1

In a seat structure including a seat having a leg with a base and a track along which said base slides for adjustment, the track having upwardly facing openings spaced along the length thereof and interconnected by undercut slots, the improvement comprising a pair of studs affixed to said base and received in said track, said studs being spaced along said base lengthwise of said track and having heads insertable in said openings and engageable with said track at said slots when lifted, a threaded plunger affixed to said base between said studs and screwable into and out of a selected one of said opening for locking and releasing said seat and for lifting and lowering said heads into and out of engagement with said track at said slots, said plunger being mounted at the center of said base and said studs being mounted towards opposite ends of said base, lock nut means threaded on said plunger for locking said plunger at a given position of adjustment, and plastic slide means mounted on each of said studs under said base and engageable with said track for facilitating sliding of said base on said track.