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).

  • Patent number: 10835787
    Abstract: The invention provides golf clubs and methods of making golf clubs with machined perimeter faces. The club faces provide an accurate ball striking surface and improved aerodynamics. In particular, a surface is milled into the club face that expands over an edge of a ball striking surface and onto a portion of the face adjacent to at least one of a crown, a sole, a toe, or a heel. During a swing, the milled surface causes the boundary layer of airflow to separate at a point closer to the rear of the club head, resulting in reduced drag.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: November 17, 2020
    Assignee: COBRA GOLF CORPORATION
    Inventors: D. Clayton Evans, Cameron J. Day, Michael T. McDonnell, Ryan L. Roach, Douglas E. Roberts, Bryce Hobbs, Yi-ching Liao
  • Patent number: 10821337
    Abstract: A golf club head includes a heel, a toe, a sole, and a rail. The toe is opposite the heel. The sole is between the toe and the heel. The sole has a forward portion and an aft portion. A forward-aft direction is defined from the forward portion to the aft portion. A heel-toe direction is defined from the heel to the toe. The rail extends outwardly from the sole along the forward-aft direction. The rail and the sole define an open-ended first channel extending along the rail in the forward-aft direction. The rail defines a second channel extending in the heel-toe direction.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 3, 2020
    Assignee: COBRA GOLF INCORPORATED
    Inventors: Bryce Hobbs, D. Clayton Evans, Cameron J. Day, Tim A. Beno, Ryan L. Roach
  • Patent number: 10532254
    Abstract: This disclosure describes golf club heads with optimized aerodynamics, in which a highly-lifted trailing edge minimizes drag, and in which a protruding element optimizes a location of a club head center of gravity. Features of the disclosure reduce drag forces on a club head during a golf swing and consequently reduce the work required to move the club head through the air. Thus, the club heads allow golfers to achieve faster golf swing velocities and increase golf shot distances.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: January 14, 2020
    Assignee: Cobra Golf Incorporated
    Inventors: D. Clayton Evans, Michael S. Yagley, Cameron J. Day
  • Patent number: 10512827
    Abstract: A golf club head with at least one hollow rail disposed on the sole of the club head body, and an insert positioned within at least a portion of the at least one hollow rail. The insert may include a thermoplastic polymer, such as thermoplastic urethane, and may be positioned to beneficially modify a mass distribution of the club head. By providing sole rail(s), a player may benefit from improved ball speed due to the improved interaction between the club head and turf or ground. The golf club head may further include a channel along a length of the sole of the club head, wherein the channel traverses the at least one hollow rail. The channel may extend in a heel-toe direction along the sole and allow greater flexibility in the club head upon impact with a golf ball.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: December 24, 2019
    Assignee: Cobra Golf Incorporated
    Inventors: Bryce Hobbs, D. Clayton Evans, Cameron J. Day, Tim A. Beno, Ryan L. Roach
  • Patent number: 10343031
    Abstract: The invention provides a golf club head with an openwork (e.g., lattice-like or trellis-like) internal structural element that provides strength and stiffening at key points of the club head and/or attenuates sound while adding little to the overall mass due to the defined or irregular patterns of holes, piercings, gaps, or apertures through surfaces of the material. A golf club head may be given an openwork internal rib that reinforces regions of high strain, thereby minimizing material fatigue and preventing early breakage of the club head.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: July 9, 2019
    Assignee: Cobra Golf Incorporated
    Inventors: Cameron J. Day, D. Clayton Evans, Steven M. Mitzel
  • Publication number: 20180200590
    Abstract: The present invention is directed to a weighting system allowing for rapid addition and removal of interchangeable weighted inserts to a golf club. The weighting system includes one or more weight housings strategically positioned on the sole of the club head, wherein each housing includes a receptacle configured to receive one or more weighted inserts within and a corresponding cover assembly configured to be releasably coupled to the receptacle to either retain one or more weighted inserts within the receptacle or simply cover an otherwise empty receptacle. The receptacle is weight-relieved to compensate for the mass of the cover assembly. Due to the conservation of mass achieved as a result of the weight-relief design on the receptacles, the weight system allows for covers to be used to cover both filled and empty receptacles alike, without undermining the intended weight distribution which occurs in current club head designs.
    Type: Application
    Filed: January 19, 2017
    Publication date: July 19, 2018
    Inventors: D. Clayton Evans, Steven M. Mitzel
  • Patent number: 10004958
    Abstract: The present invention is directed to a golf club head comprising one or more center of gravity and bias adjustment features. In some embodiments, the golf club head comprises an elongated cartridge having one or more sockets or weight ports to receive weight plugs, the arrangement of which can be changed to adjust the mass properties of the golf club head. The orientation of the cartridge itself can also be reversed to adjust the mass properties. In other embodiments, the golf club head comprises at least one semicircular weight ring that extends around the rear portion of the golf club head, and is removable and replaceable to adjust the mass properties of the golf club head. In still other embodiments, these features are combined on one head.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: June 26, 2018
    Assignee: Callaway Golf Company
    Inventors: Larry Tang, James A. Seluga, D. Clayton Evans
  • Publication number: 20170246518
    Abstract: The present invention is directed to a golf club head comprising one or more center of gravity and bias adjustment features. In some embodiments, the golf club head comprises an elongated cartridge having one or more sockets or weight ports to receive weight plugs, the arrangement of which can be changed to adjust the mass properties of the golf club head. The orientation of the cartridge itself can also be reversed to adjust the mass properties. In other embodiments, the golf club head comprises at least one semicircular weight ring that extends around the rear portion of the golf club head, and is removable and replaceable to adjust the mass properties of the golf club head. In still other embodiments, these features are combined on one head.
    Type: Application
    Filed: May 11, 2017
    Publication date: August 31, 2017
    Inventors: Larry Tang, James A. Seluga, D. Clayton Evans
  • Patent number: 9682299
    Abstract: The present invention is directed to a golf club head comprising one or more center of gravity and bias adjustment features. In some embodiments, the golf club head comprises an elongated cartridge having one or more sockets or weight ports to receive weight plugs, the arrangement of which can be changed to adjust the mass properties of the golf club head. The orientation of the cartridge itself can also be reversed to adjust the mass properties. In other embodiments, the golf club head comprises at least one semicircular weight ring that extends around the rear portion of the golf club head, and is removable and replaceable to adjust the mass properties of the golf club head. In still other embodiments, these features are combined on one head.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: June 20, 2017
    Assignee: Callaway Golf Company
    Inventors: Larry Tang, James A. Seluga, D. Clayton Evans
  • Publication number: 20160175668
    Abstract: The present invention is directed to a golf club head comprising one or more center of gravity and bias adjustment features. In some embodiments, the golf club head comprises an elongated cartridge having one or more sockets or weight ports to receive weight plugs, the arrangement of which can be changed to adjust the mass properties of the golf club head. The orientation of the cartridge itself can also be reversed to adjust the mass properties. In other embodiments, the golf club head comprises at least one semicircular weight ring that extends around the rear portion of the golf club head, and is removable and replaceable to adjust the mass properties of the golf club head. In still other embodiments, these features are combined on one head.
    Type: Application
    Filed: March 1, 2016
    Publication date: June 23, 2016
    Inventors: Larry Tang, James A. Seluga, D. Clayton Evans
  • Patent number: 9308423
    Abstract: The present invention is directed to a golf club head comprising one or more center of gravity and bias adjustment features. In some embodiments, the golf club head comprises an elongated cartridge having one or more sockets or weight ports to receive weight plugs, the arrangement of which can be changed to adjust the mass properties of the golf club head. The orientation of the cartridge itself can also be reversed to adjust the mass properties. In other embodiments, the golf club head comprises at least one semicircular weight ring that extends around the rear portion of the golf club head, and is removable and replaceable to adjust the mass properties of the golf club head. In still other embodiments, these features are combined on one head.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: April 12, 2016
    Assignee: Callaway Golf Company
    Inventors: Larry Tang, James A. Seluga, D. Clayton Evans
  • Patent number: 8852019
    Abstract: A variable length shaft assembly comprising at least one upper shaft portion, a lower shaft portion and a threaded fastener, wherein the threaded fastener removably connects the upper shaft portion to the lower shaft portion, is disclosed herein. The variable length shaft assembly may further comprise at least two upper shaft portions having different lengths so a golfer can adjust the total length of the shaft by removing one upper shaft portion and replacing it with another upper shaft portion having a different length. Methods of adjusting the length of a golf club shaft without damaging any portion of the shaft and variable length shaft kits are also disclosed herein.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: October 7, 2014
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Tim Goudarzi, Matthew T. Cackett
  • Patent number: 8708836
    Abstract: A golf club head (40) with a face component (50), an aft body (70), and an aerodynamic hosel (50) is disclosed herein. The hosel (50) has one or more joints (80, 85, 87) around which pieces or segments of the hosel (50) may be rotated or pivoted to modify the way in which a shaft is oriented with respect to the club head (40) when the hosel (50) is rigidly affixed to the club head (40). The present invention may be used to modify the loft, lie, and/or face angle parameters of the golf club head.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: April 29, 2014
    Assignee: Callaway Golf Company
    Inventors: Steven M. Ehlers, D. Clayton Evans, Matthew T. Cackett
  • Patent number: 8702533
    Abstract: A titanium bodied driver that utilizes a lightweight receiving back cap, which is designed to be non-removable from the club head but can be loosened to allow its interior to be accessed to reposition one or more movable weights into alternative receiving locations, is disclosed herein. The back cap may also be designed to be completely removable from the driver body to gain access to the one or more weights that can be re-positioned in alternative receiving areas within the back cap's interior.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: April 22, 2014
    Assignee: Callaway Golf Company
    Inventor: D. Clayton Evans
  • Patent number: 8696493
    Abstract: A driver type golf club head comprising a body having a face, a crown and a sole, wherein the highest point of the crown surface is located within a crown apex zone, and the club head has a depth, the depth being at least twice the length as a height of the club head, wherein the depth is at least 4.600 inches.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: April 15, 2014
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Evan Gibbs, Matthew T. Cackett, Steven M. Ehlers
  • Patent number: 8668596
    Abstract: A golf club comprising an adjustable fitting member semi-permanently attached rearwardly on a sole is disclosed herein. The fitting member can be rotated to adjust the measured and perceived face angle of the golf club head at address without changing the relative relationship of the club with respect to the shaft, which would alter the lie and loft of the golf club head.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: March 11, 2014
    Assignee: Callaway Golf Company
    Inventors: Matthew T. Cackett, D. Clayton Evans, Alan Hocknell
  • Patent number: 8663030
    Abstract: A customizable golf club head is disclosed herein. The customizable golf club head includes a body comprising a crown and a sole and a removable skid plate attached to the sole, wherein the removable skid plate affects the face angle of the golf club head at address. The face angle of the golf club can be further altered by removing the first skid plate and replacing it with a second skid plate having a structure that, when the second skid plate is affixed to the golf club head, causes the golf club head to have a different face angle at address.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: March 4, 2014
    Assignee: Callaway Golf Company
    Inventor: D. Clayton Evans
  • Publication number: 20140045608
    Abstract: A titanium bodied driver that utilizes a lightweight receiving back cap, which is designed to be non-removable from the club head but can be loosened to allow its interior to be accessed to reposition one or more movable weights into alternative receiving locations, is disclosed herein. The back cap may also be designed to be completely removable from the driver body to gain access to the one or more weights that can be re-positioned in alternative receiving areas within the back cap's interior.
    Type: Application
    Filed: October 7, 2013
    Publication date: February 13, 2014
    Applicant: CALLAWAY GOLF COMPANY
    Inventor: D. Clayton Evans
  • Publication number: 20140045610
    Abstract: A driver type golf club head comprising a body having a face, a crown and a sole, wherein the highest point of the crown surface is located within a crown apex zone, and the club head has a depth, the depth being at least twice the length as a height of the club head, wherein the depth is at least 4.600 inches.
    Type: Application
    Filed: October 8, 2013
    Publication date: February 13, 2014
    Applicant: CALLAWAY GOLF COMPANY
    Inventors: D. Clayton Evans, Evan D. Gibbs, Matthew T. Cackett, Steven M. Ehlers
  • Patent number: D884101
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: May 12, 2020
    Assignee: COBRA GOLF INCORPORATED
    Inventors: D. Clayton Evans, Douglas E. Roberts, Ryan L. Roach, Yi-Ching Liao