Karsten Manufacturing Corporation

David S Kultala

Eric V Cole

Ryan M Stokke

Evan R Greer

Martin R Jertson

Travis D Milleman

David L Petersen

Eric Joel Morales

Jacob T Clarke

Anthony D Serrano

John A Solheim

Les J Bryant

Richard D MacMillan

Rick Solesbee

Tony Serrano

Tom Morris

Toby Stapleton

Cory S Bacon

Murphy R Alexander

Matthew W Simone

Alex G Woodward

Matthew T Schier

John E Oldenburg

Embodiments of golf coupling mechanisms for joining golf club heads and shafts are described herein. The golf coupling mechanism allows for adjustment of a club head loft angle, a club head lie angle, and a golf club shaft length while utilizing one club head and one shaft. In a fully extended configuration, the golf coupling mechanism includes a shaft sleeve, a removable spacer, and a removable extender, wherein a fastening assembly secures the golf coupling mechanism to the golf club head. In a contracted configuration, the golf coupling mechanism includes the shaft sleeve. The golf coupling mechanism further includes a shaft cap to soften the interaction between the shaft and the golf coupling mechanism. The golf coupling mechanism further comprises one or more arcuate coupler sets to frictionally lock the shaft relative to the golf club head.

Golf club heads with golf coupling mechanisms

A golf club has a first shaft coupled to a club head, a second shaft configured to slidably engage a portion of the first shaft, a grip coupled to the second shaft, and an adjustable length shaft assembly received by the second shaft and configured to allow a portion of the first shaft to slide in relation to the second shaft in a first configuration, and to restrict a portion of the first shaft from sliding in relation to the second shaft in a second configuration. The grip is restricted from rotation about the first shaft or the second shaft as the first shaft slides in relation to the second shaft.

Adjustable length shaft and an adjustable mass for a golf club

A golf club head includes a hosel and a shaft sleeve insertable into the hosel, A shaft sleeve body of the shaft sleeve, the shaft sleeve body includes an outer wall and a first coupler protruding from the sleeve outer wall and having a first coupler surface area, a second coupler protruding from the sleeve outer wall and having a second coupler surface area, a third coupler protruding from the sleeve outer wall and having a third coupler surface area, and a fourth coupler protruding from the sleeve outer wall and having a fourth coupler surface area. Each of the first second, third and fourth couplers has an arcuate surface continuously curved throughout its respective surface area.

Golf club heads with hosel inserts and related methods

Golf club grip

A golf club includes a golf club head, a shaft adapter secured within a hosel of the golf club head, and a shaft secured within the shaft adapter. The golf club shaft is formed from a fiber reinforced polymer and extends along a longitudinal axis between a tip end and a grip end. The golf club shaft includes a tip end section, a grip end section, and a tapered section between the tip end section and the grip end section. The tapered section of the shaft includes a reference portion within the upper half that has a frustoconical shape with a near-constant taper rate, and a narrowed portion within the lower half. The narrowed portion is recessed relative to a reference surface extrapolated from the frustoconical shape.

Diameter profiled golf club shaft to reduce drag

A golf club shaft used with putter type club heads for making a putting stroke on the green of a golf course is made from high-modulus fibers which results in an ultra-high stiffness putter shaft with high frequency, low tip deflection, and high torsional and bending rigidity. The ultra-high stiffness putter shaft prevents unwanted face twisting during the impact of a golf ball during a putting stroke, allowing for greater putt accuracy.

Ultra high stiffness putter shaft

Adjustable putter shaft stiffener

Embodiments of golf coupling mechanisms are presented herein. Other examples and related methods are also disclosed herein.

Growing community of inventors

Phoenix, AZ, United States of America

David S Kultala