Patents by Inventor Doug C. Dombrowski

Doug C. Dombrowski 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: 6964616
    Abstract: A putter comprises a linearly elongated telescopic shaft having a handle or grip at an end. The shaft is coupled to a putter head at an opposing (lower or inferior) end. The head is adjustable for altering the lie angle of the putter. The putter may further comprise an offset elbow disposed between the shaft and the head. The elbow is rotatable through 360° about the lower or inferior end of the shaft, thus allowing the rotation of the head 16 about the shaft for selecting a right-handed or left-handed putting orientation.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: November 15, 2005
    Inventor: Doug C. Dombrowski
  • Patent number: 6723000
    Abstract: An adjustable putter head and club shaft combination golf putter is adjustable in both shaft length and head angle. A main shaft includes a second shaft portion which telescopes inside a first shaft portion for adjusting the length of the main shaft. A gear assembly located between the second shaft portion and the putter head creates pivoting action of the putter head. When the main shaft is telescopically extended to its longest length, the putter head is located at almost a right angle with respect to the main shaft. As the main shaft is shortened, the putter head increases its angle to approximately 15° in a directly proportional manner.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: April 20, 2004
    Inventor: Doug C. Dombrowski