Patents Examined by Leo S. Tentoni
  • Method and appparatus for monitoring and controlling thermoplastic extruder output
    Patent number: 5122315
    Abstract: In a gear pump assisted thermoplastic extrusion system, the speed of operation of the gear pump is adjusted in relation to fluctuations in both the rate of product output from the system and the rate of material input to the system to precisely maintain a desired weight per unit length of the extruded product within close tolerances.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: June 16, 1992
    Assignee: Luwa Corporation
    Inventor: Dana G. Darley