Patents Examined by Sneh Varma
  • Patent number: 6471604
    Abstract: A golf club (40) having a club head (42) with a face component (60) and an aft body (61) is disclosed herein. The face component (60) has a striking plate portion (72) and a return portion (74). The aft-body (61) is composed of a crown portion (62), a sole portion (64) and optionally a ribbon section (90). The face component (60) is composed of an amorphous metal material, and the aft-body (61) is composed of a non-metal material such as a composite material or a thermoplastic material. The club head (42) has a volume in the range of 290 cubic centimeters to 600 cubic centimeters, a weight in the range of 165 grams to 300 grams, and a striking plate portion (72) surface area in the range of 4.00 square inches to 7.50 square inches.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: October 29, 2002
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, Uday V. Deshmukh, Richard C. Helmstetter, Matthew T. Cackett, Herebert Reyes, James M. Murphy, Peter L. Soracco, J. Andrew Galloway, Augustin W. Rollinson
  • Patent number: 6450896
    Abstract: A golf club head is formed of a metal shell, a metal neck tube, and a metal ball-hitting plate. The shell is provided with a neck seat having a through hole in communication with the hollow interior of the shell. The neck tube is lodged in the through hole of the neck seat such that the outer end of the neck tube forms with the neck seat a neck portion of the golf club head. The shell is further provided on the outer surface with an open space corresponding in shape to the ball-hitting plate. The ball-hitting plate is fused with the shell by brazing such that the ball-hitting plate covers the open space of the shell. The shell is made by casting. The neck tube is made by a mechanical process. The ball-hitting plate is made by forging, or punching and pressing.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: September 17, 2002
    Inventor: Archer C. C. Chen
  • Patent number: 6443856
    Abstract: A golf club head having a face with a plurality of shorelines that have a contour with a continuous curvature is disclosed herein. The face has a thickness that is less than 0.110 inches, and each of the scorelines have a depth that is greater than 0.012 inches. The width of each of the scorelines may be between 0.028 inches and 0.032 inches. Each of the scorelines may have a contour with a first convex section, a concave section and a second convex section. Preferably, the face is composed of a forged titanium material. However, the face and/or club head body may be composed of steel, other metals and composite materials.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: September 3, 2002
    Assignee: Callaway Golf Company
    Inventors: J. Andrew Galloway, Richard C. Helmstetter, Alan Hocknell
  • Patent number: 6443855
    Abstract: A head of golf club having a hollow body with a first semi-phere integrally formed therein and a filling line integrally formed between the first semi-sphere and the bottom of the body portion, a face welded on a front end the body, a float received between the first semi-sphere and a second semi-sphere which is combined with the first semi-sphere by welding, and a casing welded on a back end of the body portion, whereby the center of mass of the golf club is self-optimizing, and the structure of the golf club head is simple and firm.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: September 3, 2002
    Inventor: Wen-Cheng Tseng
  • Patent number: 6443854
    Abstract: An aluminum alloy product of extremely high hardness is conformable for use in the manufacture of various products, such as, golf clubs and pump partshaving a body or first layer of an aluminum alloy treated by successive precipitation hardening and reverse quenching to produce a hardness exceeding 140 HBN, and an outer alumina layer or surface coating is applied by hard-anodizing to a predetermined thickness on the first layer and being of even greater hardness than the first layer.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: September 3, 2002
    Assignee: A. R. Wilfley & Sons, Inc.
    Inventor: George A. Calboreanu
  • Patent number: 6440011
    Abstract: A method for producing a forged striking plate for a golf club is disclosed herein. The forging process involves multiple heating and pressing of a metal bar to obtain a final face member configuration. The heating of the metal bar is performed at temperatures below 1000° C. for less than twenty minutes. The final face member configuration has a striking plate with regions of variable thickness. The metal bar is preferably composed of a forged titanium material.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: August 27, 2002
    Assignee: Callaway Golf Company
    Inventors: Alan Hocknell, J. Andrew Galloway, Richard C. Helmstetter, Ronald C. Boyce
  • Patent number: 6435982
    Abstract: A golf club having a club head with a striking plate having a thickness in the range of 0.010 to 0.250 inch is disclosed herein. The club head may be composed of three pieces, a face, a sole and a crown. Each of the pieces may be composed of a titanium material. The striking plate of the club head may have an aspect ratio less than 1.7. The striking plate may also have concentric regions of thickness with the thickness portion in the center. The club head may be composed of a titanium material, have a volume in the range of 175 cubic centimeters to 400 cubic centimeters, a weight in the range of 165 grams to 300 grams, and a striking plate surface area in the range of 4.00 square inches to 7.50 square inches. The golf club head may also have a coefficient of restitution greater than 0.8 under test conditions such as the USGA test conditions specified pursuant to Rule 4-1e, Appendix 11, of the Rules of Golf for 1998-1999.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: August 20, 2002
    Assignee: Callaway Golf Company
    Inventors: J. Andrew Galloway, Richard C. Helmstetter, Alan Hocknell, Ronald C. Boyce, Homer E. Aguinaldo, Curtis S. Woolley
  • Patent number: 6434811
    Abstract: A golf club head has a weight compartment within a hollow interior, and a weight member that is injected into the weight compartment subsequent to formation of the body of the golf club head. The preferred weight member is bismuth. The golf club head has a body that has a volume between 140 cubic centimeters and 350 cubic centimeters. The body of the golf club head weighs between 140 grams and 215 grams.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: August 20, 2002
    Assignee: Callaway Golf Company
    Inventors: Richard C. Helmstetter, Roger C. Cleveland, D. Clayton Evans, J. Andrew Galloway
  • Patent number: 6435978
    Abstract: A golf club having an interior hosel that is disposed inward from a striking plate to allow for compliance of the striking plate during impact with a golf ball. The present invention also includes a method for producing the golf club in which the interior hosel is attached to a lateral extension of a face member. The lateral extension is connected to the striking plate. The striking plate is preferably composed of a forged titanium material.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: August 20, 2002
    Assignee: Callaway Golf Company
    Inventors: J. Andrew Galloway, Richard C. Helmstetter, Homer E. Aguinaldo, Alan Hocknell
  • Patent number: 6431997
    Abstract: Golf shots lose both distance and directional accuracy when the ball is struck at a clubface location not aligned with (i.e. directly in front of) the clubhead center of gravity (a “mishit”). High moment of inertia clubhead designs (i.e., extreme toe heel weighting) only partially reduce mishit distance loss and are limited by practical clubhead size and weight. The subject invention reduces, or totally eliminates mishit distance loss regardless of clubhead moment of inertia via designs which absorb more ball impact energy for on-center hits versus mishits thus equalizing distance. The invention allows for the use of integral or attached metal or plastic faceplates without impeding the function of such variable energy absorbing mishit corrective devices, thereby greatly improving clubhead durability, feel, and practicality, especially for irons and putters.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: August 13, 2002
    Inventor: John W. Rohrer
  • Patent number: 6428427
    Abstract: A golf club head (20) having a thin striking plate (30) with a smooth exterior surface and a thin layer (35) disposed on the exterior surface (53). The thin layer (35) has a plurality of scorelines (75) that absorb the shock during impact with a golf ball. The striking plate (30) has a thickness in the range of 0.010 inch to 0.200 inch, and the thin layer (35) has a thickness in the range of 0.003 inch to 0.050 inch. The striking plate (30) may have a uniform thickness or a variable thickness.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: August 6, 2002
    Assignee: Callaway Golf Company
    Inventor: John B. Kosmatka
  • Patent number: 6413167
    Abstract: A golf overswing alerting mechanism is provided which produces a visual and/or audible indicator for the purpose of alerting a golfer to an improper swinging movement of a golf club. The overswing alerting mechanism is housed entirely within the hollow opening of the golf club shaft or is accommodated in a housing that is detachably affixed to the golf club. In a preferred configuration, the alerting mechanism includes a sound generation assembly for generating an audible sound upon occurrence of the overswing condition; an energy generation member to provide electrical energy to the sound generation assembly, and a circuit closing member or accelerometer(s) detecting the occurrence of an overswing condition. The preferred mechanism further includes an LCD readout provided in the grip butt of the golf club grip which indicates to the golfer the speed of the golf club shaft.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: July 2, 2002
    Inventor: Thomas J. Burke
  • Patent number: 6409612
    Abstract: A weighting device for a golf club head is disclosed herein. The weighting device has a polymer body with a plurality of ports for holding a plurality of high density members. The high density members are preferably tungsten spheres. The weight of the weighting device may be adjusted by increasing or decreasing the number of high density members. The weighting device is preferably removable from a golf club head to allow for adjustment in the golf club head's center of gravity, moment of inertia and swingweight.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: June 25, 2002
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, Donald A. Bistline, Victor S. Dennis
  • Patent number: 6406382
    Abstract: The use of liquid phase sintering for weighting of a golf club head is disclosed herein. The preferred weighting material is a multiple component material that includes a high-density component, a binding component and an anti-oxidizing component. A preferred multiple component material includes tungsten, copper and chromium. The liquid phase sintering process is performed in an open air environment at standard atmospheric conditions.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: June 18, 2002
    Assignee: Callaway Golf Company
    Inventors: Uday V. Deshmukh, Kenneth S. Vecchio, Joel B. Erickson
  • Patent number: 6406380
    Abstract: A unique golf putter clubhead, when attached to a shaft, assures better directional control of a golf ball travel when use for its primary purpose of putting a golf ball. The putter clubhead is formed along a longitudinal axis generally transverse to the plane defined by the ball-striking face. The ball-striking face may be formed in a radial surface defining either a spherical or cylindrical arc.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: June 18, 2002
    Inventor: Robert E. Jackson
  • Patent number: 6402638
    Abstract: A practice putter head includes a substantially flat centrally located sweet spot, and a pair of surfaces that will deflect the golf ball when various flaws occur in a putter's stroke. In one embodiment, the putter head has a putting surface that includes a centrally located sweet spot, a proximal end, and an opposing distal end. A distal claw defines an inner distal claw surface that extends forward from the distal end of the putting surface and extends proximally, and a proximal claw defines an inner proximal claw surface that extends forward from the proximal end of the putting surface and extends distally. The putter head may also include a distal surface inclining from the distal edge of the sweet spot and a proximal surface inclining from the proximal edge of the sweet spot.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: June 11, 2002
    Inventor: Donald J. Kelley
  • Patent number: 6402632
    Abstract: A golf swing training apparatus is disclosed, the apparatus comprising a support structure for supporting the golf swing training apparatus in a support plane, and a telescopic swing training arm connected to the support structure and further connectable to a golf club shaft. The telescopic swing training arm is biased toward a predetermined length, whereby the swing training arm is urged toward the predetermined length in response to axial movement thereof in either first or second directions away from the predetermined length. The predetermined length is such as to accommodate a preferred path of travel for a golf club through a portion of a golf swing.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: June 11, 2002
    Assignee: Swing Shaper, Inc.
    Inventors: Lee A. Hope, Charles E. Rhodes
  • Patent number: 6398666
    Abstract: A golf club head having a striking plate with regions of varying thickness is disclosed herein. A central region has a first thickness range that is thicker than the thickness range of any of the other regions. The thickness of the regions decreases outward from the center. The striking plate may be used on a fairway wood-type golf club head or a driver-type golf club head. The striking plate is preferably composed of steel or titanium.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: June 4, 2002
    Assignee: Callaway Golf Company
    Inventors: D. Clayton Evans, J. Andrew Galloway
  • Patent number: 6390933
    Abstract: A golf club having a club head having with a coefficient of restitution greater than 0.845 and a durability to withstand 2000 impacts with a golf ball at 110 mile per hour is disclosed herein. The club head may be composed of three pieces, a face, a sole and a crown. Each of the pieces may be composed of a titanium material. The club head may be composed of a titanium material, have a volume in the range of 175 cubic centimeters to 400 cubic centimeters, a weight in the range of 165 grams to 300 grams, and a striking plate surface area in the range of 4.00 square inches to 7.50 square inches.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: May 21, 2002
    Assignee: Callaway Golf Company
    Inventors: J. Andrew Galloway, Richard C. Helmstetter, Alan Hocknell, Ronald C. Boyce, Homer E. Aguinaldo
  • Patent number: 6386989
    Abstract: A grip assembly for the handle of a golf club where the grip assembly includes a resilient underlisting sleeve over which is spirally wrapped a resilient strip. The lower end of the underlisting sleeve includes a nipple formed with an upward facing circumferential groove. The lower end of the strip is urged into the confines of the groove to secure the lower end of the strip to the underlisting sleeve.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: May 14, 2002
    Inventor: Ben Huang