Patents by Inventor Richard W. Jeffries

Richard W. Jeffries 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).

  • Indexing apparatus
    Patent number: 4378707
    Abstract: An indexing apparatus operated by a unidirectionally rotating drive shaft. The drive shaft and a driven member are rotatingly supported by a base in a spaced apart manner. An interconnecting link extends between the drive shaft and the driven member and is pivotally pinned in an offset manner at a first end to the drive shaft. A second end of the interconnecting link is pivotally pinned in an offset manner to the driven member. When the drive shaft rotates it oscillates the driven member in opposite first and second directions through an arc. A releasable engaging device carried by the driven member releasably engages an index member rotatably carried by the base.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: April 5, 1983
    Assignee: Jackson Machine Products
    Inventor: Richard W. Jeffries