Patent ID: 6032914
Filing Date: 2000-03-07
Classification: A47B,A63B,Y10T

Abstract:
An adjustable leg, comprising:a first elongate strut, said first elongate strut having a first strut end wall defining an outer surface, said first strut end wall having a first aperture therein;a second elongate strut, said second elongate strut having a second strut end wall and being telescopically received in said first strut, said first strut end wall being adjacent said second strut end wall, said second strut end wall having a plurality of second apertures therein;a lever journalled for rotational movement about an axis outward of said outer surface on said first strut end wall, said lever having a first portion on one side of said axis of rotation and a second portion on the other side of said axis of rotation, said lever including at least one bearing member defining a circular bearing surface;a shaft journalled in said bearing surface, said shaft being mounted on said first strut outwardly of said outer surface;a coil spring, said spring having at least one spring extension engaging said first strut end wall and a second spring extension engaging said first portion of said lever, said first and second spring extensions acting to urge said first strut end wall and said first portion of said lever away from one another;a latching dog carried by said second portion of said lever and being in register with said first aperture, said spring urging said latching dog into said first aperture whereby when said first aperture is in register with one of said second apertures, said dog extends through said first and second apertures to thereby prevent any substantial telescopic movement between said first and second struts.