Abstract: A nonvented gravity fed exponential mixing and delivery system and apparatus for the administration of a drug in a precalculated manner to give constant therapeutic blood plasma levels in the recipient, (patient), which provides an inexpensive, quick and simple exponential mixing procedure to deliver an infusion containing exponentially decreasing concentrations of a drug, which the exponential mixing of a dilute solution of the drug or isotonic solution which flows by gravity from a conventional IV container, through a coupling means, into a vertically aligned nonvented nondeformable mixing chamber, filled to capacity with a concentrated solution of said drug, said mixing container being provided with a verticle inlet conduit means and a vertical outlet conduit means at opposing ends, each conduit means extending into said mixing container at a height to provide a sufficient height differential to induce exponential mixing of the solutions, to effect an exponentially decreasing concentration of said drug dur

Abstract: A nonvented gravity fed exponential mixing and delivery system and apparatus for the administration of a drug in a precalculated manner to give constant therapeutic blood plasma levels in the recipient, (patient), which provides an inexpensive, quick and simple exponential mixing procedure to deliver an infusion containing exponentially decreasing concentrations of a drug.

Abstract: A combination feeding tray and play table adapted to be used with a chair comprising a substantially rigid, unitary tray provided with a U-shaped opening or recess of sufficient size to accomodate the body of a child, said tray comprising a horizontal surface surrounding the front and sides of said opening, integral with an upwardly and outwardly inclined sliding surface, the inner edge of said horizontal surface being provided with an upstanding perpendicular extension or border, the front portion of said horizontal surface being provided with countersunk openings for removably receiving toys and feeding plates mounted on equally sized and shaped ends adapted to frictionally fit into said openings. The back of the tray may be open or enclosed with a perpendicular upstanding backrest.

Abstract: A security lock guard adapted to engage a sliding bolt and to be mounted overlying the recess on the door jamb consisting of a flat plate having an opening corresponding with said recess to receive said bolt, said opening being provided with a plurality of removable tabs so as to accommodate the width of differently sized bolts; and a flange extending outwardly and perpendicularly from the outer edge of said flat plate and in contact with the inner surface of the door stop disposed on the door jamb. This perpendicular flange acts as a barrier against the insertion of a thin blade or other object between the door edge and the jamb even if the door stop is lifted or removed from the door jamb.

Abstract: A combination bumper, feeding tray, toy holder and retriever appliance adapted to be used with a chair comprising a circular or oval tray provided with a solid U-shaped opening situated slightly off-center and of sufficient size to accomodate the body of a child, with the straight edge of the U-shaped opening fitting over the backrest of a chair; a horizontal radially extending support means surrounding said U-shaped opening; said support means being provided with a suitable number of apertures for positioning and supporting toys and feeding plates having a configuration adapted to be received and supported by said apertures; and a circumferentially continuous upwardly inclined member contiguous with said horizontal support means.