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: 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: 8646163
    Abstract: Methods of forming a golf club head having improved aerodynamic characteristics are disclosed herein. A preferred method is the largest tangent circle method, which utilizes a Cartesian coordinate system. The method results in identification of the highest point of the crown surface located within a crown apex zone, and this location aids in the design of improved aerodynamic properties of the golf club head.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: February 11, 2014
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Evan D. Gibbs, Matthew T. Cackett, Steven M. Ehlers
  • Patent number: 8641554
    Abstract: A golf club having removable components is disclosed herein. The golf club having removable components includes a club head, a shaft, and a connection assembly. The connection assembly includes a sleeve mounted on the tip end of the shaft and a screw-cap. The sleeve has an offset aperture for receiving the tip end of the shaft in order to adjust the face angle of the golf club. The screw-cap is mounted over the sleeve and includes a body having an upper area and a threaded area, the latter of which is capable of engaging the upper threaded portion of the hosel to removably secure the shaft to the club head.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: February 4, 2014
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, Matthew T. Cackett, D. Clayton Evans
  • Patent number: 8622849
    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 a portion of the crown contour exists above a radius arc of approximately 5.25 inches.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: January 7, 2014
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Evan Gibbs, Matthew T. Cackett, Steven M. Ehlers
  • Publication number: 20130337935
    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: Application
    Filed: August 26, 2013
    Publication date: December 19, 2013
    Applicant: CALLAWAY GOLF COMPANY
    Inventor: D. Clayton Evans
  • Patent number: 8591350
    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: April 29, 2013
    Date of Patent: November 26, 2013
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Tim Goudarzi, Matthew T. Cackett