Abstract: A flap for an asphalt hopper of an asphalt paver includes a sheet of a first material arranged to, in a non-deformed configuration, extend upwards from a base of the asphalt hopper and at least partially enclose one end of the asphalt hopper. The flap further includes a support member of a memory metal material coupled to the sheet. The support member has a deformed configuration and a non-deformed configuration. The support member experiences shape memory effect above a transition temperature that causes the support member in the deformed configuration to transition to the non-deformed configuration in response to heating at or above a transition temperature and also urges the sheet to return to the non-deformed configuration from a deformed configuration.

Abstract: The present invention relates to a generator control system that includes a generator, a variable displacement pump, a generator speed sensor, and a generator speed controller. The generator speed sensor generates a measurement output signal that corresponds to the speed of the generator. The generator speed controller generates a control signal that controls the displacement of the displacement pump to limit generator speed surging. The generator speed controller applying default commanded event control gain values to the control signal when a commanded change in the load or speed of the engine or generator occurs, applying uncommantled event control gain values to the control signal in the absence of a commanded change in load or speed of the engine or gen erator, and reducing the uncommanded event control gain values as needed until the magnitude of generator speed surging is less than a threshold value or until a minimum uncommanded event control gain value threshold is reached.

Abstract: A method and apparatus for forming wet concrete employing a slip form having a radially expandable elastic outer shell comprising pouring concrete around the exterior surface of the outer shell and applying a fluid under pressure to the interior surface of the outer shell. The pressure of the fluid is pulsated so that the outer shell expands and contracts to reduce the friction between the outer shell and the concrete. The reduction in friction allows the form to be moved longitudinally along the concrete with reduced tearing of the surface of the concrete.

Abstract: This invention relates to formation of strip or other small sections by casting of metal and passing it through a sizing die. More particularly, the invention relates to production of metal strip by casting, by extruding the strip through a die and by rolling the extruded strip to a thinner gauge.

Abstract: An apparatus for the continuous production of strip steel from ferrous ore includes a separate ore reducing furnace, a refining furnace, a degassing chamber and continuous casting means. The refining furnace includes inert gas injecting means connected to a porous floor and an enclosed deep settle bath section beyond the porous floor.

Abstract: The specification discloses fully continuous production of steel strip from ore. Ore is continuously charged in particulate form to a reactor where it is adhered to hot metal in a continuous flash smelting process. The hot metal is continuously refined, is continuously clarified by bubbling an inert gas through it, is continuously alloyed, and is then continuously degassed. The degassed metal is then continuously cast and continuously rolled to steel strip.

Abstract: Apparatus for removing volatile components from a liquid includes three distinct sections of a confined passageway for the liquid. The first section is for heating the liquid to a predetermined temperature at a preselected pressure such that vaporization of the volatile components is prevented. The second section of the confined passageway is a restrictive orifice forming flow path. The third section is a volatile component evaporation section. The volatile component evaporation section and the restrictive orifice forming flow path are dimensioned relative to one another and in respect of the preselected pressure and temperature of the liquid product such that the volatile components of the liquid substantially instantaneously vaporize in a flashing action as the liquid passes from the restrictive orifice forming flow path to the volatile component evaporization section.

Abstract: The apparatus and method make possible the semicontinuous rolling of an extensive range of product widths from no more than three widths of slabs. The leading end of a slab is forged or upset laterally between dies tapered to reduce its width at said end gradually to a value less than the desired width at the end of the pass. The slab is then passed through grooved vertical edging rolls to reduce its width and into the rolls of a roughing stand. The edge rolling tends to move the overfilled metal into the void created by the dies. As the trailing end of the slab approaches the roughing stand the edging rolls are backed off, allowing that end of the slab to fan out laterally. As the slab leaves the roughing stand it is rolled between grooved vertical edging rolls to reduce spread and bring the fanned-out trailing end to size. That operation causes the trailing end to bulge rearwardly at its center, so compensating for fishtailing.