Abstract: Prostheses for inadequate or diseased heart valves and blood vessels, formed of fabrics comprising multifilament synthetic yarns. For a heart valve the fabric is supported on a three-lobed frame. During manufacture, the fabric is subjected to a plural step compressive shrinking and crimping process to impart nonisotropic elastic compliance approximating the natural mechanical properties. The resulting composite structures are free of thrombogenic complications.

Abstract: A recirculating sewerage system comprising a water closet, a selectively inclined effluent receiving member including filtering media at least at the upper portion thereof, means for directing the effluent flushed from the water closet onto the top surface of the effluent receiving member proximate the uppermost portion thereof whereby the liquid portion of the flushed effluent will pass through the filtering media and the solid portion of the flushed effluent will slide down the effluent receiving member, means for collecting the portion of the flushed effluent which passes through the filtering media, means for selectively recirculating the filtrate collected in the collecting means to flush the water closet, means for selectively draining the filtrate collecting means, means for collecting the portion of the flushed effluent which slides off of the effluent receiving member, a reservoir for receiving grey water discharge from a bathing facility, means for selectively directing grey water contained in the r

Abstract: A toilet comprising a toilet bowl including a flushing manifold, a first discharge opening, and a second opening proximate the discharge opening, means for selectively closing the first discharge opening so that the discharge of the contents of the toilet bowl through the discharge opening will be prevented, means for delivering a predetermined volume of flushing medium under pressure to the toilet bowl when the dicharge opening is closed, a conduit extending between the second opening and the flushing manifold including a pump, and means for operating the pump for a selected period of time after the predetermined volume of flushing medium has been delivered to the toilet bowl.