Lightweight shaft and methods of making same
Patent 5984804 Issued on November 16, 1999. Estimated Expiration Date: 
March 1, 2016. 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.
March 1, 2016. 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 2282614 2822175 Golf club shaft Golf club shaft for irons Golf shaft and method of making same Composite tubular elements Golf club Golf club shaft and method of manufacture Method for producing a wood-type golf club head Grip for a golf club shaft InventorAssigneeApplicationNo. 613792 filed on 03/01/1996US Classes:473/319Filament (e.g., fiber, etc.) or sheet wrapped about shaft longitudinal axisExaminersPrimary: Chapman, Jeanette E.Assistant: Blau, Stephen Attorney, Agent or FirmInternational ClassA63B 053/10AbstractA lightweight shaft 22 includes a plurality of non-metallic fibers 42, 63, 66 and 70 arranged in prescribed orientations from one end of the shaft to the other and carried by a cured plastic material 103. Additional fibers 82 and 84 are carried by the cured plastic material 103 and are located at a butt end 28 of the shaft 22 to form a strengthening band 104 which precludes splitting and cracking of the shaft at the butt end. A lightweight filler element 106, which is composed of a rigid foam material, is located within a portion 27a of an opening 27 at a tip end 30 of the shaft 22 to strengthen the tip end.Field of SearchMethodFilament (e.g., fiber, etc.) or sheet wrapped about shaft longitudinal axis Including nonmetallic material or vibratory wave modifying feature Having core (e.g., weight, etc.) positioned in head engaging shaft end Vibratory wave (e.g, shock wave, etc.) modifying feature Shaft Including metal | |
