Patents by Inventor D. Clayton Evans

D. Clayton Evans 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 Head with Metal Injection Molded Sole
    Publication number: 20080268981
    Abstract: A wood-type golf club head (20) with a main body (22) and a metal injection molded sole portion (26) is disclosed herein. The main body (26) has a face portion (30), a crown portion (24) a ribbon portion (28) and a bottom opening (31). The metal injection molded sole portion (26) is preferably brazed to the main body (22). The metal injection molded sole portion (26) preferably has a mass ranging from 45 grams to 110 grams. The metal injection molded sole portion (26) is preferably from 50 weight percent to 35 weight percent of the total mass of the wood-type golf club head (20).
    Type: Application
    Filed: June 30, 2008
    Publication date: October 30, 2008
    Inventor: D. Clayton Evans
  • Multiple material golf club head
    Patent number: 7399237
    Abstract: A wood-type golf club head (40) preferably having a major body (50), a striking plate insert (55) and a minor body (60) is disclosed herein. The major body (50) is preferably composed of a metal material and has a front wall section (72), a return section (74), a sole section (76), a ribbon section (78) and a ledge portion (80). The minor body (50) is preferably composed of a low density material and has a crown section (62) and a ribbon section (64). The striking plate insert (55) is preferably composed of a metal material. The wood-type golf club head (40) preferably has a sole section 76 with a first keel (400) and a second keel (405).
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: July 15, 2008
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Evan D. Gibbs, Matthew J. Erickson
  • Golf club head with metal injection molded sole
    Patent number: 7396296
    Abstract: A wood-type golf club head (20) with a main body (22) and a metal injection molded sole portion (26) is disclosed herein. The main body (26) has a face portion (30), a crown portion (24) a ribbon portion (28) and a bottom opening (31). The metal injection molded sole portion (26) is preferably brazed to the main body (22). The metal injection molded sole portion (26) preferably has a mass ranging from 45 grams to 110 grams. The metal injection molded sole portion (26) is preferably from 50 weight percent to 35 weight percent of the total mass of the wood-type golf club head (20).
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: July 8, 2008
    Assignee: Callaway Golf Company
    Inventor: D. Clayton Evans
  • Method for fitting golf clubs to a golfer
    Patent number: 7354353
    Abstract: A method (500) for fitting a golf club to a golfer is disclosed herein. The method includes having a golfer hit a test golf club. If the test golf club is preferred, a final golf club is formed that matches the test golf club. Preferably, the final golf club matches the following parameters of the test golf club: volume, mass, mass location, inertial values, center of gravity location, club frequency, orientation, material composition and shape. In a preferred embodiment, a test golf club with an interchangeable shaft is utilized with the method.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: April 8, 2008
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, Matthew T. Cackett, Denver Holt, D. Clayton Evans, Daniel M. Stevens, James C. Wenck, Steven S. Ogg, Konrad Lenhof, Jerry V. Blanke, Joel B. Erickson
  • Golf club with interchangeable head-shaft connection
    Patent number: 7344449
    Abstract: A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: March 18, 2008
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, Matthew T. Cackett, Denver Holt, D. Clayton Evans, Daniel M. Stevens, James C. Wenck
  • Golf club with interchangeable head-shaft connection
    Patent number: 7335113
    Abstract: A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: February 26, 2008
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, Matthew T. Cackett, Denver Holt, D. Clayton Evans, Daniel M. Stevens, James C. Wenck
  • Golf club with interchangeable head-shaft connection
    Patent number: 7300359
    Abstract: A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: November 27, 2007
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, Matthew T. Cackett, Denver Holt, D. Clayton Evans, Daniel M. Stevens, James C. Wenck
  • Multiple material golf club head
    Patent number: 7273419
    Abstract: A wood-type golf club head (40) preferably having a major body (50), a striking plate insert (55) and a minor body (60) is disclosed herein. The major body (50) is preferably composed of a metal material and has a front wall section (72), a return section (74), a sole section (76), a ribbon section (78) and a ledge portion (80). The minor body (50) is preferably composed of a low density material and has a crown section (62) and a ribbon section (64). The striking plate insert (55) is preferably composed of a metal material. The wood-type golf club head (40) preferably has a sole section 76 with a first keel (400) and a second keel (405).
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: September 25, 2007
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Evan D. Gibbs, Matthew J. Erickson
  • Multiple material golf club head
    Patent number: 7258630
    Abstract: A wood-type golf club head (40) having a major body (50), a striking plate insert (55) and a minor body (60) is disclosed herein. The major body (50) is composed of a metal material and has a front wall section (72), a return section (74), a sole section (76), a ribbon section (78) and a ledge portion (80). The minor body (50) is preferably composed of a low density material and has a crown section (62) and a ribbon section (64). The striking plate insert (55) is composed of a metal material. An epoxy-based composition (200) is placed at a face-sole junction (205) to lower the amplitude of the sound of the golf club head (40) during impact with a golf ball.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: August 21, 2007
    Assignee: Callaway Golf Company
    Inventors: Matthew J. Erickson, Bradley C. Rice, D. Clayton Evans, Evan D. Gibbs
  • Golf clubhead with adjustable weighting
    Patent number: 7166041
    Abstract: A golf club head (20) with an adjustable weight member (50) is disclosed herein. The weight member (50) is preferably positioned within a recess (40) of the golf club head (20). The weight member (50) is moved to a desired location and locked in place using a locking mechanism. The weight member (50) is preferably composed of a material having a greater density than the density of the material of a body (22) of the golf club head (20).
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: January 23, 2007
    Assignee: Callaway Golf Company
    Inventor: D. Clayton Evans
  • Golf club head
    Patent number: D532068
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: November 14, 2006
    Assignee: Callaway Golf Company
    Inventors: Larry G. Tang, D. Clayton Evans
  • Golf club head
    Patent number: D532069
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: November 14, 2006
    Assignee: Callaway Golf Company
    Inventors: Larry G. Tang, D. Clayton Evans
  • Golf club head
    Patent number: D532852
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: November 28, 2006
    Assignee: Callaway Golf Company
    Inventors: Larry G. Tang, D. Clayton Evans
  • Golf club head
    Patent number: D533912
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: December 19, 2006
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Larry G. Tang
  • Scoreline pattern for a golf club head
    Patent number: D534977
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: January 9, 2007
    Assignee: Callaway Golf Company
    Inventor: D. Clayton Evans
  • Golf club head
    Patent number: D535342
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: January 16, 2007
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Larry G. Tang
  • Sole design for a golf club head
    Patent number: D536049
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: January 30, 2007
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Larry G. Tang
  • Golf club head
    Patent number: D544933
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: June 19, 2007
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Larry G. Tang
  • Golf club head
    Patent number: D566214
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: April 8, 2008
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Garth W. Smith, Larry G. Tang, Kevin Kim, Luke R. Williams
  • Golf club sole
    Patent number: D569941
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: May 27, 2008
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Larry G. Tang