Patents by Inventor J. Neil Hall

J. Neil Hall 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: 7326126
    Abstract: An iron-type golf club (320) having an iron-type club head (322) with an interchangeable shaft (40) is disclosed herein. The golf club (320) includes a tube (344) mounted in the hosel (331) of the club head (322), and a sleeve (346) mounted on a tip end (50) of the shaft (40). The tube (344) includes a tapered portion (360) and a rotation prevention portion (362). The sleeve (346) has a frustoconical portion (372) and a keyed portion (374) that are respectively received in the tapered portion (360) and the rotation prevention portion (362) of the tube (344). The golf club (320) further includes a mechanical fastener (48) for removably securing the shaft (40) to the club head (322).
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: February 5, 2008
    Assignee: Callaway Golf Company
    Inventors: Denver Holt, Matthew T. Cackett, Alan Hocknell, J. Neil Hall
  • Patent number: 6478690
    Abstract: The present invention is a golf club (30) having a club head main body (34) with a recess (38), an polymer insert (40) in the recess (38), an isolation layer (52) and a weight body (50). The polymer insert (40) is composed of a thermosetting polyurethane material having a Shore D hardness in the range of 42 to 55, and a Bayshore rebound in the range of 51 to 60. The preferred thermosetting polyurethane material is formed from a p-phenylene diisocyanate prepolymer and a curing agent. The golf club (30) is preferably a putter, however, it may be a wood or an iron. The particular thermosetting polyurethane provides a soft striking face for feel and a good rebound for distance. The weight body (50) is preferably composed of a tungsten alloy, and the isolation layer (52) is preferably composed of a thermoplastic polyurethane.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: November 12, 2002
    Assignee: Callaway Golf Company
    Inventors: Richard C. Helmstetter, Ronald K. Hettinger, J. Neil Hall, Augustin W. Rollison, Kamal Sarkar, Joshua G. Breier, John G. Guard, Pijush K. Dewanjee
  • Publication number: 20020065144
    Abstract: The present invention is a golf club (30) having a club head main body (34) with a recess (38), an polymer insert (40) in the recess (38), an isolation layer (52) and a weight body (50). The polymer insert (40) is composed of a thermosetting polyurethane material having a Shore D hardness in the range of 42 to 55, and a Bayshore rebound in the range of 51 to 60. The preferred thermosetting polyurethane material is formed from a p-phenylene diisocyanate prepolymer and a curing agent. The golf club (30) is preferably a putter, however, it may be a wood or an iron. The particular thermosetting polyurethane provides a soft striking face for feel and a good rebound for distance. The weight body (50) is preferably composed of a tungsten alloy, and the isolation layer (52) is preferably composed of a thermoplastic polyurethane.
    Type: Application
    Filed: December 10, 2001
    Publication date: May 30, 2002
    Applicant: Callaway Golf Company
    Inventors: Richard C. Helmstetter, Ronald K. Hettinger, J. Neil Hall, Augustin W. Rollinson, Kamal Sarkar, Joshua G. Breier, John G. Guard, Pijush K. Dewanjee
  • Patent number: 6336869
    Abstract: The present invention is a golf club (30) having a club head main body (34) with a hollow interior (49), a support layer 41 defining a depth of a recess (38), a polymer insert (40) in the recess (38), an isolation layer (52) and a weight body (50). The polymer insert (40) is composed of a thermosetting polyurethane material having a Shore D hardness in the range of 42 to 55, and a Bayshore rebound in the range of 51 to 60. The preferred thermosetting polyurethane material is formed from a p-phenylene diisocyanate prepolymer and a curing agent. The golf club (30) is preferably a putter, however, it may be a wood or an iron. The particular thermosetting polyurethane provides a soft striking face for feel and a good rebound for distance. The weight body (50) is preferably composed of a tungsten alloy, and the isolation layer (52) is preferably composed of a thermoplastic polyurethane.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: January 8, 2002
    Assignee: Callaway Golf Company
    Inventors: Ronald K. Hettinger, Richard C. Helmstetter, J. Neil Hall, Augustin W. Rollinson, Kamal Sarkar, Joshua G. Breier, John G. Guard, Pijush K. Dewanjee
  • Patent number: 6328661
    Abstract: The present invention is a golf club (30) having a club head main body (34) with a recess (38), an polymer insert (40) in the recess (38), an isolation layer (52) and a weight body (50). The polymer insert (40) is composed of a thermosetting polyurethane material having a Shore D hardness in the range of 42 to 55, and a Bayshore rebound in the range of 51 to 60. The preferred thermosetting polyurethane material is formed from a p-phenylene diisocyanate prepolymer and a curing agent. The golf club (30) is preferably a putter, however, it may be a wood or an iron. The particular thermosetting polyurethane provides a soft striking face for feel and a good rebound for distance. The weight body (50) is preferably composed of a tungsten alloy, and the isolation layer (52) is preferably composed of a thermoplastic polyurethane.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: December 11, 2001
    Assignee: Michael A. Catania
    Inventors: Richard C. Helmstetter, Ronald K. Hettinger, J. Neil Hall, Augustin W. Rollison, Kamal Sarkar, Joshua G. Breier, John G. Guard, Pijush K. Dewanjee
  • Patent number: 6260250
    Abstract: A bending plate for use in adjusting a lie and/or loft of a golf club head. The bending plate comprises means for minimizing or reducing mechanical stresses within a face region and face insert plate of the golf club head, when the golf club head is placed in a clamping apparatus. Thus, the bending plate protects the face insert plate of the club head during a lie and/or loft adjustment of the club head. The bending plate also includes means for establishing proper positioning of the bending plate over the face insert plate and/or face region of the golf club head.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: July 17, 2001
    Assignee: Callaway Golf Company
    Inventors: J. Neil Hall, Ronald K. Hettinger
  • Patent number: 6095931
    Abstract: A bimetallic golf club head having a weight body for lowering the center of gravity of the golf club head in order to increase vertical gear effect upon impact with a golf ball, while also providing for an isolation layer between the golf club head's weight body and a main body portion comprising a ball striking front section. One purpose of the isolation layer is to isolate, or reduce the combination of, the impact vibration frequency pattern of the main body and the vibration frequency pattern of the weight body, thereby preserving the desirable feel and playability of a single metal golf club head while enjoying the improved performance of a low center of gravity golf club head. Another purpose of the isolation layer is to minimize or reduce the galvanic/intermetallic reaction between two different metallic materials that are placed in direct contact.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: August 1, 2000
    Assignee: Callaway Golf Company
    Inventors: Ronald K. Hettinger, J. Neil Hall, Augustin W. Rollinson, Kamal Sarkar
  • Patent number: 6093116
    Abstract: A golf club head having a face insert plate. The face insert plate is affixed to a faceplate mounting surface wherein a plurality of channels are formed. The channels preferably have a depth that is increased in a lower region of a face of the club head. An elastomeric binding material and damping agent is provided within the channels to affix the face insert plate to the face plate mounting surface and to provide a vibration damping function. In a preferred form, the faceplate mounting surface comprises a base wall of a face insert receiving cavity or recess that is formed within a main body of the club head.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: July 25, 2000
    Assignee: Callaway Golf Company
    Inventors: Ronald K. Hettinger, J. Neil Hall, Ruben Ruiz
  • Patent number: D537896
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: March 6, 2007
    Assignee: Callaway Golf Company
    Inventors: Denver Holt, Matthew T. Cackett, J. Neil Hall, James C. Wenck
  • Patent number: D583002
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: December 16, 2008
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Matthew T. Cackett, J. Neil Hall, Brandon D. Demille, Alan Hocknell