Joints and connections – Articulated members – Lockable at fixed position
Patent
1992-01-23
1993-10-26
Reese, Randolph A.
Joints and connections
Articulated members
Lockable at fixed position
403 96, 403102, 273 801, 273 81C, 273 813, 2731862, A63B 6936, A63B 5312, A63B 5308
Patent
active
052559947
ABSTRACT:
An adjustably tensioned snap-release joint for use as a golf club swing training device is described which includes an upper shaft insert, a lower shaft insert, a screw inserted into a first bore in the lower shaft insert and inserted into a correspondingly threaded second bore in the upper shaft insert, the screw defining a rotation axis of the lower shaft member in relation to the upper shaft member to a transverse axis from a longitudinal axis defined by a linear alignment of the upper and lower shaft inserts in the golf club, an indentation positioned in a co-linear axis with the longitudinal axis of the golf club on an interior surface of the upper shaft insert, and an adjustable spring-biased hollow screw assembly having a ball positioned at the tip of a threaded shaft, capable of exerting pressure on the indentation.
REFERENCES:
patent: 4854585 (1989-08-01), Koch et al.
patent: 4856782 (1989-08-01), Cannan
Novosad Christopher J.
Reese Randolph A.
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