Patents Represented by Attorney Herbert J. Zeh
  • Patent number: 4344524
    Abstract: Disclosed are an apparatus and method for removing the fines that fall through the load run and accumulate on the return run of a foraminous, endless conveyor. In accordance with the invention, the fines are collected on the return run, conveyed on the load run to the discharge end of the conveyor and then passed through the conveyor at its discharge end.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: August 17, 1982
    Assignee: Koppers Company, Inc.
    Inventors: Glenn H. Falck, James R. Boose
  • Patent number: 4315605
    Abstract: A rotor for a hammer mill and the like comprising a rotor body and a hammer secured to said rotor body, said hammer being comprised essentially of flexible wire rope.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: February 16, 1982
    Assignee: Koppers Company, Inc.
    Inventor: John V. Vargo, Jr.
  • Patent number: 4312265
    Abstract: An extruder screw for use in the processing of a food mash is disclosed, in which, the mash is introduced into an inlet opening in an extruder barrel and conveyed by a substantially coextensive screw to an outlet or discharge opening and then through an extrusion die. The extruder screw comprises a single flight helical screw section initiating at the inlet opening and terminating within the extruder barrel, with a flightless section immediately following thereafter, and, a further helical screw section immediately following the flightless section and extending to the proximity of the outlet opening of the extruder barrel.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: January 26, 1982
    Assignee: Koppers Company, Inc.
    Inventors: William R. Enterline, Dennis G. De Wald, James R. Boose
  • Patent number: 4271285
    Abstract: A linear aryl sulfide/sulfonate polymer having improved thermal stability is provided consisting essentially of units of the formula: ##STR1## wherein n is an integer of from 3 to about 250.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: June 2, 1981
    Assignee: Koppers Company, Inc.
    Inventor: Hans Dressler
  • Patent number: 4264414
    Abstract: A method of reducing the carbonization pressure in the coking of coal is provided which comprises randomly dispersing flakes through the coal, said flakes formed of a material that does not pass through a plastic phase such as pressed sawdust wherein the flakes have a thickness of between about 1/8" and about 3/4" and a length and width of between about 1" and about 5".
    Type: Grant
    Filed: August 10, 1979
    Date of Patent: April 28, 1981
    Assignee: Koppers Company, Inc.
    Inventor: Michael Perch
  • Patent number: 4261459
    Abstract: An apparatus is provided for adjusting pallet wheel track length when the spacing between pallets changes due to temperature changes such as in the sintering of ore. The apparatus comprises pivotable arc segments which can be opened or closed to expand and contract the track length, a wedge-shaped casting positioned between said arc segments and slidable in and out at right angles to said track containing track to mate with said arc segments, drive means for moving said arc segments and wedge and a sensor means for detecting a change in pallet spacing and activating said drive means.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: April 14, 1981
    Assignee: Koppers Company, Inc.
    Inventors: Anthony A. Latowski, Rudolph M. Silvers