Patent ID: 8235468

Claim:
A chair comprising a telescoping position adjustment assembly which includes a body supporting surface thereon, said position adjustment assembly comprising: a hollow support post having a post wall with a plurality of longitudinally spaced locking recesses; a support column which is slidably insertable within a hollow interior of said support post, said support column comprising a column body having an exterior surface which is disposed closely adjacent to an interior surface of said post wall, said column body including a chamber extending therethrough which includes an installation window on one side thereof and a latch window on another side thereof wherein said latch window is disposed closely adjacent to and moves over said locking recesses defined in said post wall; and a locking mechanism carried by said column body and releasably engagable with said locking recesses to releasably fix the position of said column body relative to said post wall and define the position of said body supporting surface, said locking mechanism comprising a cassette assembly which snap fits within said chamber through said installation window, said cassette assembly including a cassette housing with snap locking connector parts which snap-fittingly engage said column body to fix said cassette housing within said chamber, said cassette housing including a resiliently-biased slidable latch which is movable sidewardly within said housing and projectable out of said latch window for releasable engagement with a respective one of said locking recesses, said locking mechanism further including a manual actuator which is engagable with said slidable latch to effect releasing of said slidable latch from said locking recesses.