Abstract: A lightweight and highly dimensionally accurate molded resin concrete product essentially comprises an intermediate layer composed of resin concrete having a resin content of about 10 to 70%, and a thickness which is not greater than 20/1,000 of its maximum length, and a pair of reinforcing layers composed of a fiber reinforced plastic, and between which the resin concrete layer is sandwiched. The product having a very small wall thickness, and high hot water resistance is particularly useful as a bathtub, or the like. Disclosed also is a method of making such a molded resin concrete product.

Abstract: A valve tappet for internal combustion engines with an overhead cam shaft moveably mounted in the sliding guide directly between the cam and valve stem and which is desinged as an automatic play compensating element comprising an outer part and an inner part guided in one another for longitudinal displacement and enclosing between them a pressure chamber connected by a non-return valve to an oil storage chamber charged with oil from the lubricating system of the engine, the outer part cooperates with the sliding guide and the cam and the inner part cooperates with the valve stem, the oil storage chamber being arranged inside the outer part so that it extends exclusively in the radial direction around the inner part and having in its lower portion an oil feed bore and at least one oil transfer bore to the pressure chamber, an oil carrying passage adjoining the oil feed bore inside the oil storage chamber opening freely into the oil storage chamber in the upper portion thereof, the oil carrying passage being fo

Abstract: A share comprising a cutting blade portion and a mounting portion, and interengaging surfaces on the cutting blade and mounting portions including lands on each portion, each land engaging one surface of the other portion so as to retain the portions together as an assembly.

Abstract: A rotary roller bearing connection with a free center comprising two concentric races, one race having a circular slot open towards the other race, the other race having a circular protrusion engaging the said slot with spacing on all sides, cylindrical rollers between the outer surface of the protrusion and the corresponding slot surface to absorb radial forces, a row of rolling elements between the face of the protrusion and the corresponding slot surfaces to absorb axial forces, of which at least the bearing row transmitting the main axial load is cylindrical rollers, and sections of circular arc form whose radii correspond at least to the radius of rolling elements disposed in the retaining row being provided in the area of the retaining row facing the bearing row and absorbing the lifting, tilting movement both at the transition of the protrusion to its associated race and at transition of the track area of the corresponding slot to the slot bottom.

Abstract: A one-piece sheet metal cage for an overrunning roller clutch wherein the cam rollers roll between a smooth inner races and an outer race provided with camming surfaces comprising a U-shaped sheet metal element provided in its longitudinal section with radial ends of different height, the higher end engaging the camming surfaces in a locking manner with a corresponding outer profile and the cage is provided with folding springs on radially directed segments on the cross-bars forming the cage pockets which cause the cam rollers to bear against an inner and outer retaining element of an adjacent cross-bar, each said cross-bar comprising a short segment extending in the circumferential direction at the bottom of the U-profile which forms the inner retaining elements at its axial ends adjoining the end flanges connecting the cross-bars and a flap between the inner retaining elements bent radially outward to which is secured a folding spring engaging an opening of the flap with an elastic projection, said flap bei

Abstract: This invention is based on the discovery by the inventors that, if a preliminary hydration hardening process and a full-scale hydration hardening process are provided after the molding process, and a process for burning a hardened body of cement at a high temperature is provided between the preliminary and full-scale hardening processes, it is possible to obtain a molded product of cement having a higher mechanical strength than any such product according to any known method including no such burning process.

Abstract: A roller bearing for the longitudinally moveable mounting of an element with a straight race comprising a bearing body having two race sections of which at least one is straight, the two race sections being connected at their ends to each other by a curved race section at each end to form a closed race for cylindrical rolling elements being secured by retaining means against falling out, the race being laterally bounded by separate flange plates secured to the bearing body, the flange plates being thin-walled elements having in at least part of the race area chiplessly formed on rims being formed in such a way that the material in the area of the rims is offset by a partial amount of the thickness of the flange plates parallel to the latter and towards the race.

Abstract: A novel plastic cage for rolling bearings split at at least one point of its circumference, the abutting faces of the split ends being provided with mutually corresponding projections and depressions to form-lock the ends relative to each other radially and axially and for tangential fixation of the abutting faces of the split ends, one abutting face having integrally formed therewith at least one resilient tongue with a hook projection and the other abutting face being provided with a cooperating recess and a depression for the hooked projection.

Abstract: An apparatus for producing a cage made of castable or injection moldable material for cylindrical rollers in which the pockets of the cage are defined by webs having projections projecting into the pockets at their longitudinal sides for radially retaining the rollers comprising slide plates radially moveable for forming the roller pockets, each slide plate being formed of several partial slide plates, the end faces of the slide plates having cover plates arranged thereon to cover the connection juncture between the partial slide plates and secured to one of the partial slide plates.

Abstract: Quadruple-layer reinforced plastic products having decorative surface designs resembling marble, onyx or the like. Each product comprises four layers: (a) a gel coat layer of clear thermosetting resin, (b) a printed fabric, woven or nonwoven, made of glass fiber or polyester fiber and impregnated with a clear thermosetting resin, (c) a background layer comprised of a thermosetting resin in which an inorganic pigment has been dispersed and (d) a backup layer of FRP.

Abstract: A thrust bearing characterized by simplicity of construction and improved life and including a pair of bearing races with a cage and rolling elements positioned between the races. Arcuately spaced lugs integrally formed on one bearing race extend in an axial direction and are provided with latching members thereon to engage the other bearing race and thereby hold the bearing races and the cage in assembled relation. An improved one-piece cage is disclosed having portions on each face of the cage which protrude outwardly for centering the cage between the opposing bearing races to facilitate proper guidance of the rolling elements.

Abstract: A baking method and a kiln to bake many tiles rapidly and continuously which comprises providing endless chains, set fire-proof L-shaped supporting parts that tiles are inserted into, which are provided with an inserting apparatus that puts tiles to be baked intermittently and nearly horizontally at the front end and a rotating loop belt, to receive baked tiles, covered by a wall for keeping them hot at the rear end, and, rotating said chains in and beside the kiln and passing tiles to be baked with holding them in a standing position through the kiln.