Abstract: A keyboard support assembly for a computer work stand is disclosed comprising a subplate (74) having a profiled opening (98, 100) along each side, and a keyboard support plate (78) residing on top of the subplate. A pair of pivotal locking devices (138) are attached to the underside of the keyboard support plate to depend into the subplate profiled openings, and to selectively engage against an underside of the subplate as the keyboard support plate is slideably re-positioned thereon. The locking devices (138) include gear teeth 140 which engage with a gear rack segment 102 along the subplate underside.

Abstract: A sign extension attachment for a self-standing floor sign having two panels (28) and (29) connected at their upper ends by hinge means (30) including a transverse handle (31), the attachment comprising a panel (10) having spreadable sleeve portions (18) and (22) for wrapping around the handle (31).

Abstract: A foldable utility cart is disclosed having first and second pairs of support legs (4, 6) at opposite sides thereof. The support legs (4, 6) are pivotal coupled at mid-sections (14, 16) so as to selectively diverge and converge into free standing and storage positions. The mid-sections (14, 16) have incut channels (24, 38) transversely disposed to each other and which interfit to being the pivotally connected legs (4, 6) into a common plane. Internal side walls (26, 28, or 40, 42) defining the incut channel of one leg mid-section brace against the top and bottom surfaces of the opposite leg mid-section. The side walls (26, 28 or 40, 42) are angularly profiled to limit and lock the pivotal rotation of the opposite leg at the free standing and storage angular positions. A shelf (12) is further provided which breaks upward at its mid-section into half sections (56, 58) which overlap along the break to lock the shelf (12) in a horizontal configuration.

Abstract: An adjustable work table is disclosed comprising a frame having spaced apart sides (6), a horizontal shaft (60) supported between the sides of the frame, and a table surface assembly (10) rotatively mounted to the shaft. Camming angular adjustment means (98, 110) is provided for rotating the table surface assembly into selective angular positions about the shaft. Vertically actuating scissor arms (44, 46) are further provided for moving the support shaft upward and downward whereby providing a vertical adjustment.