Patents by Inventor Mark E. Mathis

Mark E. Mathis 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).

  • Patent number: 5765652
    Abstract: A motorized implement having a housing containing a motor mounted therein the motor having a rotary shaft with an output end. The motorized implement further has a drive shaft with an input end pivotably supported relative to the housing and co-axially aligned with the rotary shaft. Moreover, the implement has a connector interposed between the motor and the drive shaft, which includes a pair of co-axial apertures, one to cooperate with the input end of the drive shaft to form a first connection. The other of the pair of apertures to cooperate with the output end of the rotary shaft to form a second connection. One of the first and second connections is securely fixed to its associated shaft end, and the other forms a pivotal universal joint. The aperture and associated shaft end which form the universal joint have corresponding non-circular cross-sections for enabling a slip-fit connection. The universal joint facilitates slight misalignment between the rotary shaft and the drive shaft.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: June 16, 1998
    Assignee: Ryobi North America, Inc.
    Inventors: Mark E. Mathis, Robert L. Sauer, Lakhbir S. Suchdev