Patents by Inventor Michael J. Wierman

Michael J. Wierman 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).

  • Publication number: 20120247929
    Abstract: An improved take-up assembly used on spiral conveyor belt with interconnecting links. The take-up assembly is designed to prevent damage to the belt due to obstructions, excessive tension or excessive buckling. The take-up assembly includes a pivoting swing arm assembly coupled to an obstruction sensor that automatically shuts-off the drive motor used to move the conveyor belt when an obstruction is detected upstream from the take-up assembly. An optional obstruction sensor can be used on the upper portion of the take-up assembly to detect obstructions. Also disclosed is a buckling arm located above and longitudinally aligned with the belt and pivotally attached to the distal end of the lower swing arm assembly. The swing arm is designed to pivot beyond the position where the first obstruction sensor is activated so that the amount of belt that continues to be drawn into the stack as the stack coasts to a stop.
    Type: Application
    Filed: April 2, 2012
    Publication date: October 4, 2012
    Inventors: Gerald J. Heber, Michael J. Wierman
  • Patent number: 6276518
    Abstract: A vibratory conveyor apparatus is described and which includes a conveyor bed, a frame mounted on the conveyor bed and which facilitates the reciprocal motion of the conveyor bed, and a drive assembly borne by the conveyor bed and which imparts reciprocal motion to same. The vibratory drive causes the conveyor bed to reciprocate at different velocities.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: August 21, 2001
    Assignee: Key Technology, Inc.
    Inventor: Michael J. Wierman
  • Patent number: 5868056
    Abstract: An actuator apparatus (10) includes a transverse support structure (14) for guiding a transverse carriage (16) therealong, with the carriage being powered by a remotely located rotational actuator (20) through an endless belt (80) secured to the carriage (16). A second carriage (26) moves along a longitudinal support structure (24) cantilevered transversely from carriage (16). The second carriage is powered by a remotely located second rotational actuator (28) acting through a second endless belt (150). A working tool (30) is mounted on the second carriage (26) for high speed bi-directional movement.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: February 9, 1999
    Assignee: Design Systems, Inc.
    Inventors: Craig E. Pfarr, Michael J. Wierman
  • Patent number: 5831224
    Abstract: A sound reduction system (40) reduces noise generated by a fluid cutting jet (10). The fluid cutting jet moves along a predetermined path of travel to pass the stream across another object (14) for cutting the object. The system includes a tank (42) for collecting the liquid stream from the fluid cutting jet. A plurality of tubes (46) are supported in the tank for directing the liquid stream into the tank. The tubes are arranged side-by-side in the tank along the path of travel of the stream. The tubes are positioned in the tank with their upper collection ends (54) extending above the tank and their lower drainage ends (52), directed towards the bottom of the tank. A cover (64) caps the collection ends of the tubes. A thin aperture (63) is formed in the cover to allow entry of the liquid stream into the tubes.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: November 3, 1998
    Assignee: Design Systems, Inc.
    Inventors: Darren P. Wattles, Norman A. Rudy, Michael J. Wierman
  • Patent number: 5183149
    Abstract: An endless conveyor belt of a belt conveyor system in a plant for air treatment of food products follows a helical path section preceded by a straight path section and followed by another straight path section. In the preceding straight path section, the conveyor belt remains collapsed and in the following straight path section, the conveyor belt remains expanded. At the transition between the preceding straight path section and the helical path section, the conveyor belt is expanded along the outer lateral edge of the belt. At the transition between the helical path section and the following straight path section, the conveyor belt is expanded along the inner lateral edge of the belt.
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: February 2, 1993
    Assignee: Frigoscandia Food Process Systems AB
    Inventors: Michael J. Wierman, Lennart F. Olsson