Abstract: A ball valve comprising a seat having a first opening thereon, a housing over the seat having a second opening defined by a flap having an inner and outer diameter, and a ball in the housing, the ball having a diameter great than the inner diameter of the flap. The seat may be formed directly onto a metal insert of a bonded piston seal, or directly onto a wall of any chamber needing a ball valve therein. The housing may be formed as an extension of a piece of rubber used to seal the periphery of the insert or chamber wall. Hence, the housing and insert or chamber wall may be molded together as part of a unitarily formed chamber and ball valve combination.

Abstract: An apparatus for incinerating the metal shaft of hypodermic needles which includes a housing having adjustable electrodes mounted therein which when supplied with electric current and contacted with a metal shaft of a needle will instantly disintegrate the needle to a safe residue which is collected in a tray within the housing. Gases generated within the housing from the incineration process are purified by passing through filters and ionizers before being vented to atmosphere.

Abstract: A rotatable and removable bed tray for institutional or private home use. The bed tray is easily adjustable by the bedridden patient or by others. Further, there is provided bed rail adaptor for adopting beds without bed rails to use the bed tray.