Golf club head
Patent 5447309 Issued on September 5, 1995. Estimated Expiration Date: 
June 9, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 9, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2056335 2214356 3692306 Heel and toe weighted golf club head Polyurethane golf club Golf club head Golf club with bulge radius and increased moment of inertia about an inclined axis Construction of a club-head for a golf club Golf club head Golf club InventorApplicationNo. 073522 filed on 06/09/1993US Classes:473/345, Hollow body473/335, Embedded in head473/339In vertical bore access through topExaminersPrimary: Passaniti, SebastianoAttorney, Agent or FirmForeign Patent References
International ClassesA63B 053/04DIG. 23 77 R 78 Foreign Application Priority Data1992-06-12 FRAbstractThe head of a golf club, preferably of the "wood" type, wherein the orthogonal reference passing through the center of gravity of the club head and formed by three axes about which the inertia is maximum, is such that the first two axes are located in a plane inclined with respect to the plane of the ground when the head rests on the ground, forming with the plane of the ground, a dihedron having an internal angle comprised between 20 and 60 degrees and/or wherein the axis forms with the vertical plane of the shot, an angle of between 20 and 60 degrees. | |
