Karsten Manufacturing Corporation

Mitchell E Bac

Bradley D Schweigert

John A Solheim

Michael R Nicolette

Eric V Cole

Richard R Sanchez

Richard J Williamson

In one embodiment, a golf club attachment mechanism comprises a hosel adapter with a first slot coupler across a top portion of the hosel adapter, and a shaft adapter with a second slot coupler across a bottom portion of the shaft adapter. The second slot coupler of the shaft adapter is complementary to the first slot coupler of the hosel adapter. The first slot coupler and the second slot coupler couple together to restrict a rotational movement of the hosel adapter relative to the shaft adapter. Other embodiments are disclosed herein.

Golf club attachment mechanisms and methods to attach golf clubs

A swing weight scale is presented that measures the swing weight of a golf club by measuring the torque exerted by the club about fixed balance point. The apparatus comprises an elongated torque arm pivotally mounted to a base. At one end of the torque arm a pair of rollers cradle the shaft of the golf club from underneath. At the other end of the torque arm a vertical stop provides a reference for locating the butt of the golf club shaft and provides the mounting surface for a second pair of rollers that cradle the upper surface of the shaft at the butt end. The rollers allow the golf club shaft to freely rotate about its longitudinal axis so that the golf club head will hang down freely. A torque sensor is mounted at the pivot point of the torque arm to measure the torque produced by the golf club as it is supported by the torque arm. A simple computer program converts the torque produced by the golf club on the torque arm into swing weights based on the known dimensions, weight and other parameters of the apparatus.

Digital swing weight scale

Golf iron head

A gauge for measuring the loft and lie angles of a golf club includes a rod attachable to the golf club with a first pointer mechanism being in alignment with the shaft axis of the golf club. A body is rotatable about the rod into parallel alignment with the sole of the golf club and a first indicator plate is movable with the body and relative to the first pointer mechanism to provide a visual indication of the lie angle of the golf club by showing the angle of rotation of the indicator plate relative to the first pointer mechanism. A face engaging member is pivotally mounted on the body for movement into engagement with the face of the golf club, and a second pointer mechanism is movable with the face engaging member relative to a second indicator plate carried on the body to provide a visual indication of the loft angle of the golf club by showing the angle of rotation of the second pointer mechanism relative to the second indicator plate.

Loft and lie gauge for golf clubs

Golf putter fitting tool

Growing community of inventors

Glendale, AZ, United States of America

Mitchell E Bac