Patents by Inventor Jack D. Cherry

Jack D. Cherry 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).

  • Crankshaft and a process for balancing the same
    Patent number: 4779316
    Abstract: A crankshaft and counterweights are balanced by adding additional weight without modifying their outer dimensions. Bores are drilled into the counterweights and then a slug of material which is of a different density than the original counterweight material is inserted into the drilled bore. The slug may be held in place by any suitable mechanism, e.g., press-fitting, upset fitting, welding or threading. Particularly with threading, a slug shorter than the bore may be positioned anywhere within the bore.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: October 25, 1988
    Assignee: Deere & Company
    Inventors: Jack D. Cherry, David V. Trumbauer, Steven L. Hastings