Patent 5588921 Issued on December 31, 1996. Estimated Expiration Date: September 27, 2015. 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.
473/299, Reattachable473/295, Rotatable handle473/303, Having longitudinal recess or projection473/306, Threaded shaft473/314, Particular relationship between shaft longitudinal axis and head orientation473/316Shaft
A golf club including a golf club shaft having a cylindrical shaft portion with a first end and a second end. The first end of the cylindrical shaft portion may be attached to a golf club head. The golf club shaft also includes a flattened handle portion in the vicinity of the second end of the cylindrical shaft portion and integral with the cylindrical shaft portion. The flattened handle portion is flattened in a plane extending in a direction parallel to a direction faced by a golfer addressing a golf ball to be hit by the golf club. The flattened handle portion has a thickness in a direction parallel to the plane at least three times the thickness of the flattened handle portion in a direction perpendicular to the plane. A golf club head is attached to the golf club shaft in the vicinity of the first end of the cylindrical shaft portion.