Patent ID: 7004438

Claim:
An angularly adjustable keyboard support bracket comprising: a mounting rack attached to a desktop; a movable arm coupled with the mounting rack through a first pin; and a bracing rack coupled on another end of the movable arm through a second pin, the bracing rack including a holding section at a top of the bracing rack; a tray; and a rotary mechanism, the rotary mechanism being attached to and held by the holding section, the rotary mechanism being located between the holding section and the tray, the rotary mechanism including an anchor tray, a rotary tray, and a retaining element located between the anchor tray and the rotary tray, the tray being fastened to the anchor tray, the rotary tray being directly fastened to and non-movable relative to the holding section, each of the anchor tray, the rotary tray and the retaining element having an hole aligned along an axis, a bolt being inserted into the hole of the anchor tray, the rotary tray and the retaining element and being engaged with a nut, the rotary mechanism allowing the tray to swivel to a left side and a right side, the tray being rotatable relative to both the holding section of the bracing rack and the rotary tray to provide a user with a desired operating angle.