Patents by Inventor David L. Felker

David L. Felker 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).

  • Publication number: 20100267472
    Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas, a first group of areas containing a plurality of first dimples and a second group of areas containing a plurality of second dimples, each area of the second group abutting one or more areas of the first group, the first and second groups of areas and dimple shapes and dimensions being configured such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules, and such that the golf ball exhibits a lift coefficient (CL) of less than about 0.282 over a range of Reynolds Number (Re) from about 120,000 to 180,000 and for a range of spin rates from about of about 3,000 rpm to 5,000 rpm.
    Type: Application
    Filed: April 14, 2010
    Publication date: October 21, 2010
    Applicant: AERO-X GOLF INC.
    Inventors: David L. Felker, Douglas C. Winfield, Rocky Lee
  • Publication number: 20100267488
    Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, wherein the first and second dimples are spherical dimples having different diameters and chord depths.
    Type: Application
    Filed: April 22, 2010
    Publication date: October 21, 2010
    Applicant: AERO-X GOLF INC.
    Inventors: David L. Felker, Douglas C. Winfield, Rocky Lee
  • Publication number: 20100261551
    Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, the first dimples comprising spherical dimples having a first, spherical chord depth and the second dimples comprising truncated spherical dimples having a second, truncated chord depth, and the second dimples are of larger radius than the first dimples and have a truncated chord depth which is less than the spherical chord depth of the first dimples.
    Type: Application
    Filed: April 22, 2010
    Publication date: October 14, 2010
    Applicant: AERO-X GOLF INC.
    Inventors: David L. Felker, Douglas C. Winfield, Rocky Lee
  • Publication number: 20100261555
    Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising dimples such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules, the plural areas configured such that the golf ball exhibits a lift coefficient (CL) of less than about 0.195 over a range of Reynolds Number (Re) from about 135,000 to about 180,000 and at a spin rate of about 3000 rpm.
    Type: Application
    Filed: April 9, 2010
    Publication date: October 14, 2010
    Applicant: AERO-X GOLF INC.
    Inventors: David L. Felker, Douglas C. Winfield, Rocky Lee
  • Publication number: 20100261556
    Abstract: A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas with dimples configured such that the golf ball is spherically symmetrical as defined by the United States Golf Association (USGA) Symmetry Rules, and such that the golf ball exhibits a lift coefficient (CL) of less than about 0.255 over a range of Reynolds Number (Re) from about 120,000 to about 180,000 and at a spin rate of about 4,000 rpm.
    Type: Application
    Filed: April 14, 2010
    Publication date: October 14, 2010
    Applicant: Aero-X Golf Inc.
    Inventors: David L. Felker, Douglas C. Winfield, Rocky Lee
  • Patent number: 6786837
    Abstract: A golf ball made by a process that prevents the cover from cracking due to thermal expansion of the core during the cover formation process. The method includes the forming a core. One or more optional boundary layers can be applied to the surface of the core. The core and any boundary layers are pre-heated such that the core and any boundary layer undergo volumetric thermal expansion. After the pre-heating, the cover of the ball is formed over the core and any boundary layer. The method of the present invention also decreases cover molding cycle times for golf balls.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: September 7, 2004
    Assignee: Callaway Golf Company
    Inventors: Pijush K. Dewanjee, David L. Felker, Gary G. Marshall
  • Patent number: 6607451
    Abstract: A golf club head having a face section with a polymer surface can provide a more efficient impact between a golf ball and the golf club head. By utilizing a polymer surface with desired material properties of stress, strain and damping levels, the face section will incur higher strain and strain rate levels than the golf ball. These lower internal stresses within the golf ball yield a more efficient impact with a golf club head.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: August 19, 2003
    Assignee: Callaway Golf Company
    Inventors: John B. Kosmatka, David L. Felker, Pijush Dewanjee
  • Publication number: 20020165040
    Abstract: A golf club head having a face section with a polymer surface can provide a more efficient impact between a golf ball and the golf club head. By utilizing a polymer surface with desired material properties of stress, strain and damping levels, the face section will incur higher strain and strain rate levels than the golf ball. These lower internal stresses within the golf ball yield a more efficient impact with a golf club head.
    Type: Application
    Filed: May 7, 2002
    Publication date: November 7, 2002
    Applicant: Callaway Golf Company
    Inventors: John B. Kosmatka, David L. Felker, Pijush K. Dewanjee
  • Patent number: 6440346
    Abstract: A geometric-shaped core (12) for a golf ball (10) has a plurality of outwardly extending projections (14) formed on a spherical central portion thereof. A layer (22) of a relatively less resilient material is applied in the interstitial space between the projections (14) on the surface of the core (12), and a cover (24) is applied over the core (12) and interstitial layer (22). The geometric-shaped core (12) is manufactured by first providing flexible, resilient, honeycombed inserts (42) to be used in a conventional compression mold (30). The inserts (42) are placed into the upper and lower mold cavities (30), the core material (40) is added, and the geometric-shaped golf ball core (12) is compression molded.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: August 27, 2002
    Assignee: Callaway Golf Company
    Inventors: Martin P. Wai, David L. Felker, William Priest
  • Patent number: 6390932
    Abstract: A golf club head having a face section with a polymer surface can provide a more efficient impact between a golf ball and the golf club head. By utilizing a polymer surface with desired material properties of stress, strain and damping levels, the face section will incur higher strain and strain rate levels than the golf ball. These lower internal stresses within the golf ball yield a more efficient impact with a golf club head.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: May 21, 2002
    Assignee: Callaway Golf Company
    Inventors: John B. Kosmatka, David L. Felker, Pijush Dewanjee
  • Publication number: 20020045496
    Abstract: A method of manufacturing golf balls is disclosed that prevents the cover from cracking due to thermal expansion of the core during the cover formation process. The method includes the forming a core. One or more optional boundary layers can be applied to the surface of the core. The core and any boundary layers are pre-heated such that the core and any boundary layer undergo volumetric thermal expansion. After the pre-heating, the cover of the ball is formed over the core and any boundary layer. The method of the present invention also decreases cover molding cycle times for golf balls.
    Type: Application
    Filed: October 30, 2001
    Publication date: April 18, 2002
    Inventors: Pijush K. Dewanjee, David L. Felker, Gary G. Marshall
  • Patent number: 6245386
    Abstract: A method and system for finishing a golf ball to prevent tip marks is disclosed herein. The present invention includes whitening a portion of a golf ball, then positioning the golf ball in such manner that the tips of a carrier engage the whitened portion. The whitening may be accomplished by inkjet, pad printing or painting.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: June 12, 2001
    Assignee: Callaway Golf Company
    Inventors: David L. Felker, David M. Bartels
  • Patent number: 6213892
    Abstract: A multiple layer golf ball having a high compression core and a soft boundary layer is disclosed herein. The multiple layer golf ball may also have a hard cover. The soft boundary layer allows the multiple layer golf ball to mimic the properties of a lower compression core while providing good distance. The multiple layer golf ball has a low driver spin and a high pitching wedge spin. The boundary layer is composed of a polyurethane formed from a PPDI-based prepolymer while the core is composed of a polybutadiene. The cover may be composed of an ionomer blend.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: April 10, 2001
    Assignee: Callaway Golf Company
    Inventors: David L. Felker, Pijush K. Dewanjee
  • Patent number: 6200512
    Abstract: A method of manufacturing golf balls is disclosed that prevents the cover from cracking due to thermal expansion of the core during the cover formation process. The method includes the forming a core. One or more optional boundary layers can be applied to the surface of the core. The core and any boundary layers are pre-heated such that the core and any boundary layer undergo volumetric thermal expansion. After the pre-heating, the cover of the ball is formed over the core and any boundary layer. The method of the present invention also decreases cover molding cycle times for golf balls.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: March 13, 2001
    Assignee: Callaway Golf Company
    Inventors: Pijush K. Dewanjee, David L. Felker, Gary G. Marshall
  • Patent number: 5984807
    Abstract: A geometric-shaped core for a golf ball has a plurality of outwardly extending projections formed on a spherical central portion thereof. A layer of a relatively less resilient material is applied in the interstitial space between the projections on the surface of the core, and a cover is applied over the core and interstitial layer. The geometric-shaped core is manufactured by first providing flexible, resilient, honeycombed inserts to be used in a conventional compression mold. The inserts are placed into the upper and lower mold cavities, the core material is added, and the geometric-shaped golf ball core is compression molded.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: November 16, 1999
    Assignee: Callaway Golf Company
    Inventors: Martin P. Wai, David L. Felker, William Priest