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J Andrew Galloway, Richard C Helmstetter, Alan Hocknell, Ronald C Boyce, Homer E Aguinaldo, Curtis S Woolley: Golf club head with a face composed of a forged material. Callaway Golf Company, Michael A Catania, March 12, 2002: US06354962 (243 worldwide citation)

A golf club having a club head with a striking plate having a thickness in the range of 0.010 to 0.250 inches 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 ...


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Evan D Gibbs, Ronald K Hettinger, Luke R Williams, Alan Hocknell, Matthew T Cackett: Golf club head. Callaway Golf Company, Michael A Catania, Elaine H Lo, January 16, 2007: US07163468 (231 worldwide citation)

A golf club head (42) having a standard deviation of coefficient of restitution of less than 0.226 is disclosed herein. The golf club head (42) also preferably has a delta of the coefficient of restitution between a geometric face center of the face (72) and a location (806) 0.5 inch sole-ward from ...


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J Andrew Galloway, Richard C Helmstetter, Alan Hocknell, Ronald C Boyce, Homer E Aguinaldo: High cofficient of restitution golf club head. Callaway Golf Company, Michael A Catania, May 21, 2002: US06390933 (230 worldwide citation)

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 compos ...


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Matthew T Cackett, Alan Hocknell, Steven S Ogg, Konrad Lenhof, Jerry V Blanke, Joel B Erickson: Golf club with interchangeable head-shaft connections. Callaway Golf Company, Michael A Catania, Elaine H Lo, August 1, 2006: US07083529 (220 worldwide citation)

A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and ...


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D Clayton Evans, Donald A Bistline, Victor S Dennis: Weighting member for a golf club head. Callaway Golf Company, Michael A Catania, June 25, 2002: US06409612 (204 worldwide citation)

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 o ...


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Luke R Williams, Larry G Tang, Daniel M Stevens, Ronald K Hettinger, Michael Hallack, Evan D Gibbs, Alan Hocknell, Matthew T Cackett: Golf club head. Callaway Golf Company, Michael A Catania, Elaine H Lo, January 23, 2007: US07166038 (195 worldwide citation)

A golf club head (42) having a substantially square or rectangular body is disclosed herein. The golf club head (42) preferably has a volume ranging from 420 cubic centimeters to 470 cubic centimeters. The golf club head (42) preferably has a moment of inertia about the Izz axis through the center o ...


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James M Murphy, Herbert Reyes, D Clayton Evans, J Andrew Galloway, Richard C Helmstetter, Daniel R Jacobson: Composite golf club head and method of manufacturing. Callaway Golf Company, Michael A Catania, June 19, 2001: US06248025 (191 worldwide citation)

A golf club having a club head with a striking plate composed of a composite material and having a thickness in the range of 0.010 to 0.250 inches is disclosed herein. The golf club head also has a coefficient of restitution greater than 0.8 under test conditions such as the USGA test conditions spe ...