Patent ID: 6322031
Filing Date: 2001-11-27
Classification: A47B,Y10S

Abstract:
A computer support arm assembly comprising, in combination:(a) a first bracket member for attachment to a work support;(b) a second bracket member for support of a keyboard;(c) a first linkage arm pivotally connected to the first bracket member at one end and to the second bracket member at its opposite end;(d) a second linkage arm pivotally connected to the first bracket member at one end and to the second bracket member at its opposite end, for pivotal movement about an axis said second linkage member further connectable to the first linkage member along an elongated connection path corresponding to the pivot connection of the second linkage member to the second bracket member; and(e) a locking mechanism including a wedge block on the second bracket member for at least partially frictionally engaging the linkage members and second bracket member simultaneously to retain the second bracket member in a fixed orientation, said locking mechanism comprising a surface of the second bracket member inclined with respect to the axis and an opposed inclined surface of the wedge block supported on the second bracket member, said inclined surfaces slidable with respect to each other to lock or release the locking mechanism.