Patents by Inventor Dean Ota

Dean Ota 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: 20030224867
    Abstract: The training club has a shaft which is of uniform diameter between a grip end and a head end and is provided with a plurality of spaced holes which extend through the shaft substantially perpendicular to the length of the shaft. A weighted cylinder is slidably mounted onto the shaft between the grip end and a head end. The weighted cylinder height is slightly less than the spacing between the shaft holes so that a pair of retainers each having a pin, may be removably positioned into the holes immediately above and below the weight thereby preventing movement of the weight along the shaft. With the weight secured along the shaft at any one of several locations by the retainers, a golfer may freely swing the training club without any fear of dislocating the weight. The weighted cylinder may be selected from a range of different weighted cylinders so that the actual total weight of the training club may be selected for the size and strength of the golfer.
    Type: Application
    Filed: June 1, 2002
    Publication date: December 4, 2003
    Inventor: Dean Ota
  • Patent number: 6074310
    Abstract: A golf club includes a shaft having at one end a hollow metal wood club head. The club head defines a face, a lower sole portion, an upper portion, and a side wall. The sole portion is generally thicker than the upper portion, and preferably approximately one and one-third to six times as thick. As a result of the thicker construction of the sole portion relative to the upper portion, the center of gravity of the club head is relatively low. The lower center of gravity permits a golfer to more easily swing the face of the club head under a golf ball. In a second embodiment, portions of the side wall are provided with a generally thicker construction relative to the upper portion of the club head. In a third embodiment, the sole portion is made from a material having greater mass per unit area than the upper portion.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: June 13, 2000
    Assignee: Bost Enterprises
    Inventor: R. Dean Ota
  • Patent number: D350800
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: September 20, 1994
    Assignee: Bost Enterprises, Inc.
    Inventor: Dean Ota
  • Patent number: D435075
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: December 12, 2000
    Assignee: Bost Enterprises Inc.
    Inventor: R. Dean Ota