Callaway Golf Company

Thomas J DiMarco

Joel B Erickson

John G Guard

James F Dooley

M Grace Hohn Pimentel

Patrick Dawson

Alan C Bettencourt

Robert Cruz

Daniel C Fox

James E Stevens

Augustin W Rollinson

Richard C Helmstetter

Luke R Williams

Roger C Cleveland

A screw for use with a golf club head is disclosed herein. The screw comprises a head portion with a compressible feature that more securely retains the screw within a receptacle in the golf club head. The compressible feature preferably is a plurality of tapered extensions that can be compressed inwards by a tapered portion of the receptacle, creating spring tension between the head of the screw and the tapered portion of the receptacle. This helps to prevent the screw from becoming dislodged from the golf club head when it is in use.

Golf club screw

A screw comprising a drive part, a threaded part, and a retaining ring is disclosed herein. Each of the drive part and the threaded part comprises a plurality of interface surfaces that transmit torque from the drive part to the threaded part and prevent the parts from disengaging from one another during use. Each plurality of interface surfaces forms one or more geometric shapes that create additional friction between the drive and threaded parts, and may further include mating pins and holes to prevent the parts from detaching from one another. The retaining ring, which removably connects the screw to a wrench during assembly of the screw with a receptacle, is disposed within a cavity formed when the drive part is assembled with the threaded part.

Weight screw

A C-shaped golf club head is disclosed herein. The body has a striking plate wall, a crown section, a sole section and a rear wall. The golf club head also has a plurality of weight members positioned on the rear wall of the body. Each of the plurality of weight members is movable along the rear wall.

C-shaped golf club head

A golf club head () with an adjustable weight member () is disclosed herein. The weight member () is preferably positioned within a recess () of the golf club head (). The weight member () is attached to a cable () and moved to a desired location and locked in place within a recess (). The weight member () is preferably composed of a material having a greater density than the density of the material of a body () of the golf club head ().

Golf club head with adjustable weighting

A golf club head having a defined internal cavity, and a golf club head containing a bi-material weight having a nonhomogeneous structure is disclosed herein. A method to add the bi-material weight to the golf club entails heating, vibration and cooling to produce the nonhomogeneous structure is also disclosed herein.

Golf club head

A golf club head having a defined internal cavity, and a golf club head containing a bi-material weight having a nonhomogeneous structure. A method to add the bi-material weight to the golf club entails heating, vibration and cooling to produce the nonhomogeneous structure.

Growing community of inventors

Carlsbad, CA, United States of America

Thomas J DiMarco