Abstract: A separable fastener of the press-on/pull-off types comprises similar first and second fastener members, each member including a base having a plurality of tapered projections extending from one face surface and a plurality of tapered receptacles recessed into the face surface. Projections and receptacles are positioned in identical patterns and spacings, each projection and receptacle being totally surrounded and isolated by a portion of the base material. The projections on each fastener member are contoured to engage in the receptacles of the other fastener member with a releasable friction fit.

Abstract: A tube coupling having a male body, a female body for receiving at least a portion of the male body and at least one peripheral member made from a relatively compressible plastic material molded into a groove within either the relatively rigid male or female body. The peripheral member is disposed to become compresed against a surface of the mating body to form a liquid seal. At least two peripheral members disposed in grooves in a tubular shaped end portion of the male body are made of a compressible plastic and serve as liquid sealing and locking means. The female body comprises a receiving end portion with a tapered interior adapted to receive the male tubular end portion. As the tubular end portion is inserted into the receiving end portion, one of the peripheral members engages the tapered interior surface and becomes compressed there against as the tubular end portion is further inserted.

Abstract: A hull construction especially suited to inhibit marine growth and a method for forming same is provided. The hull construction includes an outer surface having alternating metallic areas and fiber glass areas defining the entire outer hull surface. The metal forming the metallic areas is of the type which inhibits marine growth.

Abstract: An outer shell construction particularly suited for a ski boot and method for forming same is provided. The outer shell construction is formed by the steps of injection molding an outer shell, and securing a collapsible core to the inside of the boot to define a cavity between the boot and the collapsible core. The collapsible core includes a conduit therethrough. The outer shell construction is completed by introducing a cellular polymer in viscous form through the conduit into the space and curing same.

Abstract: An injection molding process by which the characteristics of a product may be controlled by molding the product of two or more dissimilar melts by simultaneous injection of the dissimilar melts into the mold in such a manner that the dissimilar melts intermix at transitional zones to provide a one-piece construction with strong chemical and/or mechanical bonds at the transitional zones.

Abstract: A picture hanging arrangement in which an elongated horizontal member is fastened to the wall surface from which a picture is to be suspended. A vertical elongated member is slidingly arranged along the horizontal member fastened to the wall. The verical member is provided with a plurality of notches into which the picture hanging wire may be inserted. Selection of the notches into which the picture hanging wire is inserted, allows varying the position of the picture along the vertical direction on the wall, whereas sliding of the vertical member along the horizontal member allows varying of the picture position along the horizontal direction on the wall.