Screw Patents (Class 105/234)
  • Patent number: 10603672
    Abstract: A system for processing material has a power supply and a machine having a hopper for receiving and passing material to an auger. The auger has a shaft with an axis about which it rotates, a helical flighting mounted to the shaft, pins mounted to the helical flighting, and paddles mounted to the shaft. The radial outer edge of the helical flighting is crenelated with periodic notches that form rectangular blades on the helical flighting. The pins are rotationally and angularly aligned with leading edges of the rectangular blades. The system may include a vehicle, such as a trailer, having first and second compartments separated by a partition. The power supply is located in the first compartment and has a power supply member extending though the partition. The machine is located in the second compartment and coupled to the power supply member.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: March 31, 2020
    Assignee: CERTAINTEED CORPORATION
    Inventors: Tony S. Piotrowski, Jack D. Coulter, Bruce A. Hartzell
  • Patent number: 4425763
    Abstract: A coal-fired steam locomotive powered by reciprocating steam engines. The locomotive is a two-unit drawbar-coupled locomotive. The units, which are designated as a power unit and a support unit, are arranged back-to-back, with each having a cab-in-front. Operation of the locomotive is equally effective in both directions. The power unit basically contains a furnace and combustion system, an ash storage system, a gas cleanup and exhaust system, a boiler and steam generator, steam engines, a jet condenser, and a control cab. The support unit, on two 6-wheel trucks, contains a modular coal storage area, a stoker motor, a water storage area, heat transfer assemblies and fans for air-cooling circulating water, and a second control cab. The coal-gasification furnace, steam boiler, and steam engines are all in a closed system. Further, the steam engines of the locomotive are in the form of a four cylinder, balanced system for driving the running gear of the locomotive.
    Type: Grant
    Filed: September 9, 1980
    Date of Patent: January 17, 1984
    Assignee: American Coal Enterprises, Inc.
    Inventors: Livio D. Porta, David A. Berkowitz, William L. Withuhn, Carl C. Hamilton