Patents Assigned to A & O Engineering, Inc.
  • Impact crushers
    Patent number: 4573643
    Abstract: In an impact crusher for reducing the size of particulate material, the breaker bars having one or more quasi-circular depressions for engaging a circular back-up bar is secured to a rotor by means of a serrated wedge and C-clamp assembly. A newly designed housing opening permits the breaker bars to be placed in an optimum horizontal positioning and a rotor-locking assembly holds the back-up bars in this optimum positioning and provides support for the breaker bars during replacement thereof.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: March 4, 1986
    Assignee: A & O Engineering, Inc.
    Inventors: Axel W. Orphall, Bernd G. Albers