# US 8,998,747 B2 · Golf club weight screws > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,998,747 B2 - Document ID: US8998747B2 - Status: Granted - Kind: B2 - Application number: 14/272,797 - Filed: 2014-05-08 - Published: 2014-08-28 - Granted: 2015-04-07 - Earliest claimed: 2011-06-14 - Assignees: Callaway Golf Company - Applicants: Callaway Golf Company - Inventors: Matthew T. Cackett; Patrick Dawson; Philip G. Foster; Brooks Roche; Brandon D. DeMille - Web page: https://patentgrep.com/patent/US8998747B2 ## CPC - A63B 60/42: Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand - A63B 53/06: adjustable - F16B 35/06: Specially-shaped heads (special shape in order to rotate the bolt F16B23/00 {; separate hook adaptors for bolts F16B43/025}) - F16B 37/14: Cap nuts; Nut caps or bolt caps - A63B 2053/0491: {with added weights, e.g. changeable, replaceable} - A63B 2209/00: Characteristics of used materials - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) ## Abstract A weight screw for a golf club head having one or more weight ports is disclosed herein. A set of weight screws is also disclosed herein, the set comprising at least one low-weight screw comprising multiple materials and at least one weight screw comprising a single material. ## Claims ### Claim 1 A screw for a golf club head having at least one opening sized to receive the screw, the screw consisting essentially of: a cap portion comprising a lateral extension region sized to close the at least one opening, a cylindrical lower portion, and through bore, wherein a width (WC) of the cylindrical lower portion is between 0.350 inch and 0.800 inch and a thickness (LB) of the cylindrical lower portion is between 0.010 inch and 0.180 inch; and a support portion comprising a docking portion, a lateral stop, and a threaded extension portion, wherein the cap portion is made of a non-metal material, wherein the support portion is made of a metal material, wherein the through bore is sized to receive the docking portion, wherein the docking portion comprises exterior threads, wherein the through bore comprises interior threads sized to mate with the exterior threads of the docking portion; and wherein the screw has a mass of less than 2 grams and wherein the support portion has a mass of less than 0.8 grams. ### Claim 2 (depends on 1) The screw of claim 1, wherein the docking portion comprises an engagement bore. ### Claim 3 (depends on 1) The screw of claim 1, wherein the non-metal material is selected from the group consisting of plastic and composite. ### Claim 4 (depends on 3) The screw of claim 3, wherein the non-metal material is injection-molded plastic. ### Claim 5 (depends on 1) The screw of claim 1, wherein the metal material is selected from the group consisting of steel, titanium, tungsten alloy, and aluminum alloy. ### Claim 6 (depends on 1) The screw of claim 1, wherein the cylindrical lower portion rests against the lateral stop. ### Claim 7 A screw for a golf club head having at least one at least one opening sized to receive the screw, the screw consisting essentially of: a cap portion comprising a lateral extension region sized to close the at least one opening, a cylindrical lower portion, and through bore, wherein a width (WC) of the cylindrical lower portion is between 0.350 inch and 0.800 inch and a thickness (LB) of the cylindrical lower portion is between 0.010 inch and 0.180 inch; and a support portion comprising a docking portion, a lateral stop, and a threaded extension portion, wherein the cap portion is made of a non-metal material, wherein the support portion is made of a metal material, wherein the through bore is sized to receive the docking portion, wherein the through bore is coated with an adhesive to engage the docking extension, and and wherein the screw has a mass of less than 2 grams and wherein the support portion has a mass of less than 0.8 grams. ### Claim 8 (depends on 7) The screw of claim 7, wherein the docking portion comprises an engagement bore. ### Claim 9 (depends on 7) The screw of claim 7, wherein the non-metal material is selected from the group consisting of plastic and composite. ### Claim 10 (depends on 9) The screw of claim 9, wherein the non-metal material is injection-molded plastic. ### Claim 11 (depends on 7) The screw of claim 7, wherein the metal material is selected from the group consisting of steel, titanium, tungsten alloy, and aluminum alloy. ### Claim 12 (depends on 7) The screw of claim 7, wherein the cylindrical lower portion rests against the lateral stop. ### Claim 13 (depends on 1, 7) A set of screws, the set comprising at least one screw of claim 1 and at least one screw of claim 7. ### Claim 14 A screw for a golf club head having at least one opening sized to receive the screw, the screw consisting essentially of: a cap portion comprising a lateral extension region sized to close the at least one opening, a cylindrical lower portion, and through bore, wherein a width (WC) of the cylindrical lower portion is between 0.350 inch and 0.800 inch and a thickness (LB) of the cylindrical lower portion is between 0.010 inch and 0.180 inch; and a support portion comprising a docking portion, a lateral stop, and a threaded extension portion, wherein the cap portion is made of a non-metal material, wherein the support portion is made of a metal material, wherein the through bore is sized to receive the docking portion, wherein the docking portion comprises exterior threads, wherein the through bore comprises interior threads sized to mate with the exterior threads of the docking portion, and wherein the screw has a mass of less than 2 grams and wherein the support portion has a mass of less than 0.8 grams. ### Claim 15 (depends on 14) The screw of claim 14, wherein the docking portion comprises an engagement bore. ### Claim 16 (depends on 14) The screw of claim 14, wherein the non-metal material is selected from the group consisting of plastic and composite. ### Claim 17 (depends on 16) The screw of claim 16, wherein the non-metal material is injection-molded plastic. ### Claim 18 (depends on 14) The screw of claim 14, wherein the metal material is selected from the group consisting of steel, titanium, tungsten alloy, and aluminum alloy.