Patents by Inventor John A. Krznarich

John A. Krznarich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sliding belt turn conveyor
    Patent number: 5860512
    Abstract: A belt turn conveyor includes a sliding belt frame having first and second generally stationary vertical bearing surfaces and first and second generally stationary horizontal bearing surfaces. An endless belt is rotationally supported by the sliding belt frame and includes means for engaging the vertical bearing surfaces for retaining the endless belt on said sliding belt frame. Endless belt includes a strip of or a plurality of segments of low friction flexible material which is secured to the endless belt for engaging the horizontal surfaces of the sliding belt frame to restrain vertical movement of said endless belt.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: January 19, 1999
    Assignee: Mannesmann Dematic Rapistan Corp.
    Inventors: Rodolfo Gianvito, John A. Krznarich, Allan D. Ewing
  • Sliding belt turn conveyor
    Patent number: 5857559
    Abstract: A belt turn conveyor includes a conveyor support having first and second generally stationary vertical bearing surfaces and first and second generally stationary horizontal bearing surfaces. An endless belt is rotationally supported by the conveyor support and includes bearing assemblies for engaging the vertical bearing surfaces for retaining the endless belt on the conveyor support. An elongated strip of low friction flexible material is secured to the endless belt for engaging the horizontal surfaces of the conveyor support to restrain vertical movement of the endless belt.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: January 12, 1999
    Assignee: Mannesmann Dematic Rapistan Corp.
    Inventors: Rodolfo Gianvito, John A. Krznarich, Allan Ewing
  • Belt turn conveyor
    Patent number: 5722531
    Abstract: A belt turn conveyor includes a vertical support member extending to the ground and a lateral support which is cantilevered from the vertical support. An endless belt can be removed and installed by slipping the endless belt over an end of the lateral support opposite the vertical support. In this manner, the belt can be removed without disassembling the vertical support.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: March 3, 1998
    Assignee: Mannesmann Dematic Rapistan Corp.
    Inventors: Mariusz Zimny, John Krznarich, Allan Ewing