Patents Assigned to Donald A. Anderson
  • Patent number: 5344140
    Abstract: A golf club head, comprising a main body portion formed by an investment casting of a first metallic material; a face plate formed of a second metallic material which is forged and is substantially softer than the first material; joining the periphery of the face plate to the main body portion to form a high strength, forged face plate for the golf club head, and the metallic materials for the face plate and main body portion being of substantially the same composition.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: September 6, 1994
    Assignees: Donald A. Anderson, Donald J. C. Sun
    Inventor: Donald A. Anderson
  • Patent number: 5261663
    Abstract: A golf club head has a main body portion formed by an investment casting of material such as stainless steel, beryllium copper, titanium, and aluminum. The face plate of the head is formed of a forged metal, such as forged carbon steel, this plate being welded to the face portion of the casting to form an integral assembly therewith. The forged metal face plate affords a more solid impact and feel to the club which provides better control. Also, it has very high strength. Preferably, the head consists of cast stainless steel, and the face plate of forged stainless steel, both steels being of the same composition. Face plate metal is preferably re-distributed toward the toe and heel of the head.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: November 16, 1993
    Assignees: Donald A. Anderson, Donald J. C. Sun
    Inventor: Donald A. Anderson
  • Patent number: 5255918
    Abstract: A golf club head comprising a main body portion formed by a steel casting; a face plate formed of forged steel, and having a periphery, a ball striking front face, and a rear side; provisions for joining the periphery of the face plate at the main body portion to form a high strength, forged face plate for the golf club head; and the main body portion forming a first rearwardly re-entrant recess directly communicating with the face plate rear side over the major area of the rear side. The face plate may alternatively consist of consolidated metal powder.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: October 26, 1993
    Assignees: Donald A. Anderson, Donald J. C. Sun
    Inventors: Donald A. Anderson, Donald J. C. Sun
  • Patent number: D326886
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: June 9, 1992
    Assignees: Cipa Manufacturing Corporation, Donald A. Anderson
    Inventors: Donald J. C. Sun, Wen J. Tai