Patents by Inventor Mark N. Stern

Mark N. Stern 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).

  • Pneumatically actuated tensioning arrangement for conveyor belt cleaner
    Patent number: 4825997
    Abstract: A tensioning arrangement is provided to position belt cleaner blades relative to conveyor belt, which arrangement includes an inflatable bladder which acts to move a pivotally mounted crank, which, in turn, moves a support shaft, which carries the cleaner blades. Pressurization of the bladder causes it to expand thereby engaging the arm which moves the support shaft to a position at which the cleaner blades engage the belt to be cleaned.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: May 2, 1989
    Assignee: Martin Engineering Co.
    Inventors: Michael A. Bowman, Larry J. Goldbeck, Richard P. Stahura, Mark N. Stern