Abstract: A child's swing seat having an elliptical strap-like perforated body of molded plastic material. A continuous strand of reinforcing cable is integrally molded in a peripheral flange on the body and has end loops projecting from the ends of the body forming hangers for attachment to suspending chains or strands for the seat. The end loops of the cable are covered with plastic during the molding operation.

Abstract: A heat exchanger is formed by a plurality of parallel spaced plates (33,34,35,36) with the spaces between the plates defining fluid receiving passageways (38,39). Each plate includes protuberances (41,42,44,46,49,51) which are staggered with respect to the protuberances on each adjacent plate so that the protuberances of one plate rest against the adjacent plate between the protuberances thereof. Bars (43,48,52) are positioned on the periphery of each plate to close off the passageways and to permit the ingress and egress of a fluid at one temperature and a fluid at a second temperature through adjacent passageways.

Abstract: The method and apparatus for separating materials includes a feed splitting assembly (27) which evenly divides the materials to be separated into equal parts for inputs to a like plurality of screen assemblies (16, 17, 18). These inputs are evenly distributed across the width of some of the screen assemblies (17, 18) by manifolds (44, 51). One of the screen assemblies (16) can receive the input directly through an aperture (40) in the feed splitting assembly (27). The material not passing through the screen assemblies (16, 17, 18) is collected at one location and the material passing therethrough is transmitted to a common discharge spout (55).

Abstract: An adjustable foot support (10) includes a platform (38) upon which the feet may be placed and a base (14) to support the platform (38). A bracket assembly (26) extends upwardly from the base (14) and has a plurality of stepped channels (28) which selectively cooperate with a downwardly extending leg (41) from the platform (38) so that the platform (38) is selectively inclined with respect to the base (14).

Abstract: An inflatable cholangiocath (10) includes an elongate shaft (11) having a proximal and a distal end (12,14), a second shaft (15) carried at the distal end and having left and right branches (16,18) adapted to be inserted into an incised duct of a patient and a central drainage lumen (24) extending from the proximal end, through the elongate shaft, and out the left and right branches, balloon means (30) encompassing a portion of the distal end and the left and right branches, the balloon means being closed to the central drainage lumen and, means for selectively inflating and deflating (20) the balloon means within the duct for predetermined periods of time.

Abstract: A single-ply roofing system comprising parallel strips of membrane (10) laid on a roof deck (14) with at least one side edge of each strip secured to the deck by mechanical fasteners (16), the side edges of contiguous strips being bonded together, each strip having transverse membrane flaps (11) secured to its undersurface at longitudinal intervals and the flaps being secured to the deck by mechanical fasteners (16).

Abstract: Apparatus and method for unloading bulk material (M) from a rectangular trailer (10') comprising a collapsible rectangular liner (29) having a collapsible funnel-shaped base (31), said liner being hung extended in said container with said base (31) collapsed and its discharge opening (32) inserted in a bottom discharge opening (33) in the trailer (10'), and a cable and winch (44,47) to lift the liner (29) to extend the base (31) for gravity discharge of the bulk material (M) through said bottom discharge opening (33).

Abstract: An ovenware receptacle system for popping grain in a microwave oven comprising a storage receptacle (14), a conical popper receptacle (12) and a perforated receptacle (13) all having upper rims adapted to fit one upon another with the popper receptacle and the perforated receptacle selectively in upright or inverted position for confining popped kernels within said perforated receptacle when inverted and transferring said popped kernels to said storage receptacle (14) by removing said popper receptacle (12) and bodily re-inverting said storage receptacle (14) and perforated receptacle (13).