Patent ID: 6053579
Filing Date: 2000-04-25
Classification: A47C

Abstract:
A height-adjustable arm assembly for a chair, comprising:an arm upright including an elongate support segment, said support segment defining therein a guide bore which is open at one end thereof, said support segment having a series of latching notches formed therein;an armrest having a slide tube and an arm element, said slide tube having a first end which is supported within said guide bore and a second end which is attached to said arm element, said slide tube having a window defined in a vertical wall thereof;a latch arrangement for permitting said slide tube to be positioned relative to said support segment at any one of a plurality of height positions, said latch arrangement including a latch member being movable between a latching position and a release position, said latch member being engaged with one of the series of latching notches when in said latching position, said latch arrangement further including a cartridge assembly which includes a box-like housing which is received within said window of said slide tube, said latch member being slidably positioned within said box-like housing; anda latch-activating mechanism for moving said latch member between said latching position and said release position, said latch-activating mechanism including an activating lever supported on said arm element, and an activating rod extending into said support segment, said activating rod having an upper end cooperating with said activating lever and a lower end engaging a roller which cooperates with a cam surface of said latch member.