Patents by Inventor Douglas Boyd Buchanan

Douglas Boyd Buchanan 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: 20030186759
    Abstract: The invention provides a golf club, a putter, wherein a shaft is fixed within a large diameter grip by means of inserts which are in the form of weighting elements. In one embodiment the weighting element is in the form of an end cap at the end of the grip thereby forming a balancing moment to counter the force acting at impact. In another embodiment weighting elements are provided at both ends of the grip to provide a “high-inertia” grip.
    Type: Application
    Filed: March 24, 2003
    Publication date: October 2, 2003
    Inventor: Douglas Boyd Buchanan
  • Patent number: 6540622
    Abstract: A golf putter is provided. The putter is made of a substantially large (between 25 and 45 mm diameter) parallel thin walled shaft wherein part of the bare shaft forms the grip. A protruding curved end cap forms part of the grip to assist in consistency of positioning the hands when taking a grip of the putter. A thin walled end plate closes off the shaft to the putter head all being designed to maximize “feel” when strokiing the ball.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: April 1, 2003
    Inventor: Douglas Boyd Buchanan
  • Publication number: 20030060303
    Abstract: A golf putter is provided. The putter is made of a substantially large (between 25 and 45 mm diameter) parallel thin walled shaft wherein part of the bare shaft forms the grip. A protruding curved end cap forms part of the grip to assist in consistency of positioning the hands when taking a grip of the putter. A thin walled end plate closes off the shaft to the putter head all being designed to maximize “feel” when stroking the ball.
    Type: Application
    Filed: November 6, 2002
    Publication date: March 27, 2003
    Inventor: Douglas Boyd Buchanan
  • Patent number: 6517447
    Abstract: A golf putter is provided. The golf putter includes a head having a cavity. An insert member is supported within the cavity by Neoprene resilient O-rings and a shaft or hosel member is connected to the insert. Because the insert member is insulated from the head by the resilient O-rings, less impact energy is dissipated within the head. The insert member is arranged to be at the sweet spot of the head.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: February 11, 2003
    Inventor: Douglas Boyd Buchanan
  • Publication number: 20010039215
    Abstract: The invention provides a golf club, a putter, wherein a shaft is fixed within a large diameter grip by means of inserts which are in the form of weighting elements. In one embodiment the weighting element is in the form of an end cap at the end of the grip thereby forming a balancing moment to counter the force acting at impact. In another embodiment weighting elements are provided at both ends of the grip to provide a “high-inertia” grip.
    Type: Application
    Filed: May 3, 2001
    Publication date: November 8, 2001
    Inventor: Douglas Boyd Buchanan
  • Publication number: 20010027138
    Abstract: A golf putter is provided. The putter is made of a substantially large (between 25 and 45 mm diameter) parallel thin walled shaft wherein part of the bare shaft forms the grip. A protruding curved end cap forms part of the grip to assist in consistency of positioning the hands when taking a grip of the putter. A thin walled end plate closes off the shaft to the putter head all being designed to maximize “feel” when strokiing the ball.
    Type: Application
    Filed: June 8, 2001
    Publication date: October 4, 2001
    Inventor: Douglas Boyd Buchanan
  • Patent number: 6251027
    Abstract: A golf putter is provided. The putter is made of a substantially large (between 25 and 45 mm diameter) parallel thin walled shaft wherein part of the bare shaft forms the grip. A protruding curved end cap forms part of the grip to assist in consistency of positioning the hands when taking a grip of the putter. A thin walled end plate closes off the shaft to the putter head all being designed to maximize “feel” when stroking the ball.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: June 26, 2001
    Inventor: Douglas Boyd Buchanan