Patents by Inventor John Kelsey Burr

John Kelsey Burr 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).

  • Recirculating ball slide
    Patent number: 3934946
    Abstract: A recirculating ball slide for supporting heavy loads. The slide includes an oval ball race having a special concave ball track. The balls are retained in the race by means of a housing having a cut-away lower portion to expose the balls for mating engagement with a slide rail which also has a concave ball track.
    Type: Grant
    Filed: October 5, 1973
    Date of Patent: January 27, 1976
    Assignee: Motion Systems, Inc.
    Inventors: John Kelsey Burr, William Wolf