Patents Assigned to Holcroft & Co.
  • Roller hearth furnace
    Patent number: 4343395
    Abstract: A high temperature furnace chamber includes a roller hearth for supporting and transporting workpieces to be heated. The rollers are supported at each end by a rotary sleeve having an inner diameter larger than the outer diameter of the rollers. Rotary movement of the sleeves transmits rotational forces to the rollers. Clearance provided between the rollers and the sleeves allows for roller dimensional variation during various furnace operating conditions.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: August 10, 1982
    Assignee: Holcroft & Co.
    Inventors: Charles Lippert, Leonard G. Nowak, Paul K. Shefsiek