Abstract: A seat tilting device includes: a bottom plate secured to a seat base; a top plate secured to a seat; a pivot connecting the top plate to the bottom plate; a compression spring surrounding the pivot; and a compression ring surrounding the compression spring, wherein a height of the compression ring is less than a distance between the bottom plate and the top plate, and wherein the compression spring biases the top plate away from the bottom plate.

Abstract: A seat tilting device includes: a bottom plate secured to a seat base; a top plate secured to a seat; a pivot connecting the top plate to the bottom plate; a compression spring surrounding the pivot; and a compression ring surrounding the compression spring, wherein a height of the compression ring is less than a distance between the bottom plate and the top plate, and wherein the compression spring biases the top plate away from the bottom plate.

Abstract: A seat tilting device includes: a bottom plate secured to a seat base; a top plate secured to a seat; a pivot connecting the top plate to the bottom plate; a compression spring surrounding the pivot; and a compression ring surrounding the compression spring, wherein there is space between a bottom surface of the top plate and a top surface of the compression ring such that the top plate may tilt on the pivot until it contacts the top surface of the compression ring and the movement of the top plate is resisted by the compression spring.

Abstract: A seat tilting device includes: a bottom plate secured to a seat base; a top plate secured to a seat; a pivot connecting the top plate to the bottom plate; a compression spring surrounding the pivot; and a compression ring surrounding the compression spring, wherein there is space between a bottom surface of the top plate and a top surface of the compression ring such that the top plate may tilt on the pivot until it contacts the top surface of the compression ring and the movement of the top plate is resisted by the compression spring.

Abstract: A shelving system and components thereof is disclosed. Preferably, the shelving system is a reverse cantilever shelf mounting system, wherein one or more shelves are supported by and extend rearwardly from an inner face of upright vertical standards. The vertical standards are of two piece construction having a triangular cross-sectional shape and an inner face having vertically oriented slots along its length for mounting shelf brackets. Tensioned cross braces lock together welded side frames of the shelving system. A base facia or “kick plate” panel may be mounted to the base of the shelving system frame, and optional open-sided rod bookstops mate with punched out mounts that are integral with the shelf top surface to securely mount the bookstop to the shelf.