Abstract: A portable partition wall system which is lightweight, easy to maintain, requires no finishing trim, and can be assembled and disassembled without any tools. Wall panels consisting of a velcro loop fabric bonded to a polyester foam core are joined together by Velcro hook tape. The panel core has a central groove along its edges into which the Velcro loop fabric is inserted and glued to prevent premature separation of the fabric and core.

Abstract: A cover sheet is provided with pairs of back-to-back Velcro strips, one being of the male variety and the other being of a female variety. The pairs are provided symmetrically about the sheet and extend from positions adjacent the periphery thereof towards the center of the sheet. The strips on one side are preferably all of the same type, female say, and the strips on the other are of the opposite type. The strips facilitate securing the sheets about objects or to each other to form enlarged sheets.

Abstract: An elevator cab is constructed of thin, somewhat semirigid skeleton. Panels, made of expanded core plastic, or honeycomb paper, are attached to the skeleton, thereby forming a very light and rigid cab. These panels are attached by means of releasable hook-like fasteners, thus permitting selective removal of the panels from the skeleton. Due to strategic location of the fasteners on the skeleton, the panels, when attached to the skeleton, create a rigid cab.

Abstract: A method of wrapping a cylindrical shape uses an elongated sheet material with a first fastener portion extending along one edge and one face of the material and a second fastener portion extending along the opposite edge and opposite face of the material. The material is helically wrapped about the cylindrical shape with the edges overlapped and the first fastener portion continuously contacting and releasably attached to the second adhesive portion to secure the sheet material to the cylindrical shape.

Abstract: An elevator cab is constructed of a thin, somewhat semirigid skeleton. Expanded core plastic panels are attached to the skeleton, thereby forming a very light and rigid cab. These panels are attached by means of releasable hook-like fasteners, thus permitting selective removal of the panels from the skeleton. Due to strategic location of the fasteners on the skeleton, the panels, when attached to the skeleton, create a rigid cab.

Abstract: A modular panel system for making possible easy transportation in compact dissassembled form of a large single plane display surface structure comprised of at least four plastic foam core type panel sections assembled with their edges abutting the edges of adjacent panel sections so that the front faces of the panel sections form the single plane display surface and the back face of each of the abutting panel sections has fastened thereto at support positions with separable and pressure engageable loop and hook fastener elements a support panel overlapping the abutting edges of the associated panel sections so as to firmly bind the associated panel sections and support panel together, and a periphery support member at each of the peripheral edge junctures of the panel sections and likewise having separable and pressure engageable loop and hook elements binding the peripheral edges of the panel sections and the periphery support members together to thereby provide a unitary single plane display structure which

Abstract: A wall hanging having a variable picture made of a multitude of interchangeable tiles which snap-fit onto a specially configured picture support assembly. A frame decoratively surrounds and contains the tiles. Each of the tiles has an eccentric image or eccentric geometric pattern thereon and can be rotated on a peg to various positions to attain a variety of pictures. Even more pictures can be obtained when different patterned tiles are exchanged with each other. In one embodiment, the tiles and pegs are rectangular and the pegs have a concave corner to facilitate removal of the tiles. In another embodiment, the faces of the tiles are circular and rotate upon cylindrical pegs. The tiles can also be transparent with window-like pockets that receive reversible decorative members.

Abstract: An assembly for forming a partition or screen, especially for display purposes, comprises a plurality of panels and connectors, with the edges of the panels carrying a looped attachment material and with the connectors formed of channel-section material with hooked attachment material within their bases, whereby two or more panels can be readily secured together by two or more connectors and as readily disconnected, the looped attachment material preferably also extending over both faces of the panels so that articles to be displayed and carrying hooked attachment material can be detachably secured to the panels, and likewise shelves with brackets with abutments to embrace the edges of panels can be secured in place by hooked attachment material on the abutments.

Abstract: A partition panel intended for combination with similarly constructed panels in subdividing a room area that obviates prior art difficulties in using cooperating Velcro-identified fasteners. The fastener strip on the panel vulnerable to being inadvertently pulled free thereof upon disengagement of the panels is effectively held thereon by being wrapped about the periphery of the panel; the forces thus are resisted by the longer length of the strip rather than being localized in the smaller portion thereof being separated from the cooperating fastener.

Abstract: An insulation window to be mounted on internal, in situ, window frames of buildings comprises a sheet of 3/16 inch rigid transparent plastic. The plastic sheet has spaced "hook-and-loop" fastening elements adhered directly to the plastic sheet about the margin of an inner face thereof and complementary hook-and-loop fastening elements are attached to the window-casing frames of the building. A weather stripping is adhered directly to the plastic sheet about the margin of the inner face thereof.

Abstract: A joint for use in a partition wall building assembly and method in which abutting edge surfaces forming the joint are provided with rigid self supporting fibres projecting substantially normally from the surfaces and intermeshed to resist shear movement between the surfaces. The top and bottom surfaces of a partition wall panel are provided with the projecting fibres which intermesh with fibres on the ceiling and floor surfaces to hold the panel in position. The ceiling and floor surfaces are relatively movable vertically to clamp the panel and ensure complete intermeshing of the fibres. The length and density of the fibres is such that shear movement is substantially prevented.