Sato Toshio: Artificial skating-rink floor. Allegretti Newitt Witcoff & McAndrews, October 2, 1979: US04169688 (350 worldwide citation)

An artificial ice skating rink floor with a layer of cushion material thereon and a plurality of floor plates formed of ultra-high molecular weight polyethyene laid directly on the layer of cushion material with the floor plates held in position by plate-like and U-shaped insertion members.

Webster John L: Road construction and panel for making same. Reynolds Metal Company, January 7, 1975: US3859000 (251 worldwide citation)

A road construction comprised of a plurality of identical invertible polygonal panels with each panel comprising a plurality of single piece peripheral frame members fixed together to define a polygonal configuration and each of the members having a roughly L-shaped projection extending therefrom wh ...

Pittoni Pierluigi: Floor surface for fencing competitions. Sava Soc Alluminio Veneto, March 21, 1984: GB2126106-A (171 worldwide citation)

A piste for fencing competitions is made up of a number of rectangular parts arranged side-by-side in alignment, and interconnected by snap-interengagement of latch (27) and socket (29) components formed on two profile sections (11, 12) extending along the contact sides of adjacent aligned parts, th ...

Ettlinger Jr Ralph, Beall Glenn L: Modular floor mat. Economics Laboratory, October 7, 1975: US3909996 (151 worldwide citation)

A modular floor mat unit which can be used individually or in combination with adjoining floor mat modules to provide an elevated surface which insulates personnel or materials from the floor surface. The floor mat is a unitary structure comprised of a tread surface integrally attached to the top ed ...

Donald W Schmanski: Mobility guide tile for visually handicapped. Thorpe North & Western, December 29, 1987: US04715743 (142 worldwide citation)

A tile for positioning on walkways, crosswalks and other areas of pedestrian traffic for providing direction and warning to visually handicapped persons. The tile comprises a flat plate having a chamfered edge and including raised bumps coupled to a top surface of the plate and projecting upward the ...

Masatsugu Yonemura: Water cutoff junction member for concrete products to be joined together. Yamax, McDermott Will & Emery, April 25, 2000: US06052960 (111 worldwide citation)

In order to join concrete products to be joined together each having an joining face, an opening formed in the joining face, and an attachment hole communicating with the opening, a junction member body has on its at least one end a swelled protruding portion which is inserted through the opening in ...

Gunter Barth, Fritz VON Langsdorff: Apparatus for placing paving elements. Dr Barth KG, F von Langsdorff Bauverfahren, Spencer & Kaye, September 18, 1979: US04168130 (108 worldwide citation)

Apparatus for taking paving elements from a store of such elements, moving them over a placing position and placing them successively onto the subsoil. In one preferred form the apparatus comprises a fork-lift truck having a mast, a jib carried by that mast, swivel means permitting the jib to be swi ...

Moriot Marc: Floor, wall or roof covering panel made from two layers with projecting edges having tenons and mortises which interlock with adjacent panel. Polystar, January 28, 2000: FR2781513-A1 (107 worldwide citation)

The panel is made in the form of two overlapping layers of material, each with two projecting edges which have their inner surfaces (23, 45) lying in the same plane. The two projecting edges of one layer have trapezoid-section surface tenons (34. 35) and the corresponding surfaces of the other two e ...

Blanding Wendell S, Brothers Jack A: Method of manufacturing particles of uniform size and shape. Corning Glass Works, Turner Burton R, Patty Jr Clarence R, January 7, 1975: US3859407 (106 worldwide citation)

Plastically formable material, which may be formed under pressure into desired shapes, is fed while in a fluid or plastically formable condition to a pair of cooperating surfaces which are relatively movable into compressive relationship with material disposed therebetween. The face of at least one ...

Conner Jesse R: Method of making wastes non-polluting and disposable. Chemfix, Brown Murray Flick & Peckham, September 24, 1974: US3837872 (105 worldwide citation)

An aqueous solution of an alkali metal silicate is mixed with waste material and a silicate setting agent to cause the silicate and setting agent to react with each other. The proportions of the silicate and setting agent are such that the reaction converts the mixture into a consolidated chemically ...