Patents by Inventor Marvin W. Coleman

Marvin W. Coleman 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).

  • Golf club and process for making same
    Patent number: 4195842
    Abstract: The present invention is a golf club having a club head of generally semi-ellipsoidal shape and including a hosel which connects the club head to a shaft. A weight member extends from the striking face of the club head rearwardly and means are provided for varying the total weight of the member. Club heads are made in pairs by machining a block of material until it is of substantially ellipsoidal shape, and then cutting the same in half at a selected predetermined, but variable, angle in order to produce club heads having striking faces of different angularity for effecting differences in loft and distance when a golf ball is struck.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: April 1, 1980
    Inventor: Marvin W. Coleman
  • Golf club
    Patent number: 4067572
    Abstract: A golf club having a shaft and a club head, the club head comprising a stationary, main body portion, and a face portion which is movable with respect to the stationary portion to vary the angular disposition of the face portion with respect to the stationary portion and the shaft of the club.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: January 10, 1978
    Inventor: Marvin W. Coleman