Patent ID: 6182791
Filing Date: 2001-02-06
Classification: B66B,E04G

Abstract:
A support apparatus comprising:an elongated, rigid support member having a base end, an upper end and a longitudinal axis and being supported at said base end, said support member further including first and second spaced support posts and a plurality of support braces extending between said first and second support posts along said longitudinal axis;said support braces defining a plurality of first support surfaces spaced along said support member in the direction of said longitudinal axis;a carriage moveable along said support member in said longitudinal direction, said carriage including;a pair of spaced, rotatable members;an endless band extending between and around said spaced rotatable members, anda plurality of lift members connected with said endless band, said lift members being spaced along said band and each of said lift members project outwardly of said band and have a second support surface engageable with said first support surfaces to support said carriage relative to said support member, the distance between adjacent first support surfaces in the direction of said longitudinal axis defining a first spacing and the distance between the second surfaces of adjacent lift members along said band defining a second spacing and wherein said first spacing is greater than said second spacing.