Abstract: Conductive vinyl matting and associated methods of manufacture and use are disclosed. In at least one embodiment, a conductive vinyl matting that is conductive on one side and static dissipative on the opposite side is disclosed. A method of manufacturing a conductive vinyl matting that is conductive on one side and static dissipative on the opposite side is also disclosed.

Abstract: Floor mats and methods for producing such mats having wear resistant phosphorescent borders that emit light after removal of ambient light so that the mat edges are visible in the event of a power failure in the facility where the mat is used. The mat border may also contain a bright pigment in the border regions and a contrasting pigment in other regions to make the border visually distinctive under normal lighting conditions. The mats may be produced from solid or foamed polyvinyl chloride materials.

Abstract: A reamer used in earth boring by the rotary method includes a body having a plurality of sockets in its outer periphery. Upper and lower blocks are disposed in the socket for supporting a shaft. A roller is rotatably mounted on the shaft with the inner periphery of the roller and the outer periphery of the shaft providing bearings for the roller. The shaft has an upper annular shoulder with a downwardly facing sealing surface disposed above the bearings. Upper and lower seals are disposed above and below the bearings with the upper seals having a facing seal sealingly engaging the roller and the downwardly facing sealing surface on the shoulder of the shaft.