Patents by Inventor Donald Burk

Donald Burk 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).

  • Publication number: 20050244238
    Abstract: An assembled hole resizing arbor 10, using an existing pilot hole 101 in a work piece 100 to produce an enlarged finished hole 102 in the work piece 100 centered around the pilot hole 101 wherein the assembled arbor 10 includes a larger diameter finish hole saw 30 mounted in a concentric relationship the pilot hole saw 40 wherein both of the hole saws 30 and 40 are mounted on a shaft member 21 connected to a power drill 200 such that the pilot hole saw 40 engages the sides of a pilot hole 101 in a work piece 100 to act as a guide element for the larger diameter finish hole saw 30 to create the desired enlarged finished hole 102 in the work piece.
    Type: Application
    Filed: April 29, 2004
    Publication date: November 3, 2005
    Inventor: Donald Burk
  • Patent number: 5411267
    Abstract: An automatic golf ball teeing apparatus for use either indoors or outdoors which can be installed above ground and requires no electricity, propellant or other remote power source for operation. The apparatus is capable of storing and sequentially dispensing by gravity a large number of golf balls to a tee unit of adjustable height. A unique pneumatic air cylinder arrangement functions as a timer for regulating the operation of a linkage system that sequentially delivers the balls from the storage unit to the tee unit.
    Type: Grant
    Filed: August 4, 1993
    Date of Patent: May 2, 1995
    Inventors: Donald Burks, Walter Flynn