Other

Origin, Inc.

Park Energy Company

Tech Line Corp.

Frank D Werner

Richard C Greig

Lowell A Kleven

Roger D Bloomfield

Robert W Wiele

James T Case

A golf club head is provided with a center of gravity positioned within a partial ellipsoid defined in an impact reference frame that has its origin at the hit center of the face of the golf club head. The majority of the partial ellipsoid is located toward the golfer from the hit center and all of the partial ellipsoid is below the hit center in the impact reference frame.

Relative position between center of gravity and hit center in a golf club

The present sheet separation technique provides easy means to separate thin sheets of paper. Slight bulges of various forms that do not nest together with adjacent sheets are formed in the sheets so that each sheet stands slightly free from its neighbors at or near such bulges so long as a sheet is not weighted down significantly. When weighted significantly, such as by numerous overlying pages, the sheet becomes flat as in the usual present form not having such features. In a preferred form, parts of at least some of the bulges extend to, or near, one or more edge locations.

Page separators to aid page turning

A method of assembly of construction and assembly of golf club head parts used to manufacture golf club heads primarily composed of strong plastic materials that can be formed by injection plastic molding processes in a minimum of two parts. Draft is practical for both molded parts to simplify mold making. A preferred plastic is polycarbonate. Internal reinforcement elements are designed and arranged to provide structural features to facilitate assembly and improve strength of bonds. Internal reinforcement elements may be molded as separate parts to join with the face and shell structure. A hosel, which is not considered part of the shell and which may be made of plastic or metal, is bonded into the golf club head parts described.

Plastic golf club head

A hose clamp for joining flexible hose or tubing to an internal fitting, or to repair a break, or to join two lengths of such tubing, has a plurality of wraps of a stretched strand of material around the exterior with the end secured to the hose. The clamp is formed by stretching the strand so each wrap is under tension and wrapping the strand over the hose numerous times, and securing the ends of the strand to prevent unwinding. Various types of applications are described.

Elastic hose clamp

Improved golf club heads indicating the location of an optimum hit point on the striking face for maximum shot distance of any hit location on the face ('maximum distance spot', called MD) and an indication of a second optimum hit point giving best distance, with the condition of minimum or no change of torque caused feel as perceived by the golfer at impact ('best feel spot,' called BF) are disclosed. Methods to locate these optimum locations are described. It has been widely assumed and believed that these two points have the same location. The present inventors have found that this is not true. The principal application is to &#x201c;wood&#x201d; type golf clubs designed to hit golf balls from a tee, but can provide useful information for clubs hitting balls from the ground. The indication of MD and BF locations on the club face may take any of various forms.

Face markings for golf clubs

A golf club head, more specifically a driver head, has a shell structure aft of the face that has ample strength but also can deform in the fore-aft direction for off-center hits sufficiently to provide good spring effect for such hits, comparable to hits at the center. Unwanted scatter caused by off-center hits is reduced with the spring design used in the shell structure. The shell structure can be applied to other hollow wood-type club heads. The shell structure can be provided with a coat or cover to close openings in the shell structure, and selected to make little change in stiffness or mass of the shell.

Elastic golf club head

An internal vibration damper for hollow golf club heads is disclosed. Of particular concern is vibration of the club sole and crown when the face of the club impacts a golf ball. At least one column extends from the sole to the crown, approximately perpendicular to the surfaces of the sole and crown. The column construction or its mounting acts to dampen and reduce vibrations of the sole and crown toward and apart from each other upon ball impact on the face of the club head.

Vibration damping for hollow golf club heads

A face wall for the hitting face of a golf club head is supported on a hollow structural shell. The face wall is formed to realize maximum face strength with minimum face mass. This is accomplished by varying the thickness of the face wall so it is thickest in the general vicinity of the face center and becomes thinner toward the edges of the face. This allows the club head to weigh less, incorporate a large face area and adequate strength while maintaining high moments of inertia of the head.

Face structure for golf club

A golf club head for a wood club type that has a thick, light weight, low density face wall supported to its rear by a hollow shell structure. The shell structure supports the face wall around the periphery of the face wall, and a club shaft is attached suitably to the rear of the front face of the face wall. The face wall preferably has a club face area greater than 5.3 square inches, and a weight not exceeding half of the total club head weight.

Large face golf club construction

Golf club heads are disclosed which have face surface shapes which are designed so as to reduce the scatter of the points where the ball stops after a hit, as compared to face surface shapes of prior art. This is accomplished by use of optimum face surface shapes which respect the USGA requirement for no degree of concavity. The face surface shapes disclosed are different in upward directions from the hit center to the face surface shapes in downward directions.

Golf club face surface shape

A patch is placed at one end of a repaired long crack in a windshield to prevent the repaired long crack from being overstressed and separating under load, which may be caused by flexing or differential thermal expansion. The patch spans the crack laterally and is placed adjacent an end of the crack, generally very near the edge of the windshield. The patch is bonded to the glass to reinforce the crack by carrying loads tending to separate the crack. The patch material is preferably at least as rigid as the glass and is bonded to the glass by a strong adhesive such as an epoxy resin.

Crack patch for repair of windshield long cracks

A golf club 'wood' of hollow construction includes a shell or wall which is attached to the back side of the face plates and extends rearwardly to a mass mounted as part of the head. The shell or wall is relatively straight in the load bearing direction and is preferably corrugated to suppress buckling failure. The shell or wall may be cast, or if desired thinner sections may be made of sheet material and assembled to support the face by means of welding, silver brazing, or for certain materials, gluing in place. An outer cover may be added to preserve an approximately traditional external shape or to permit other freedom of design of the external shape. The cover is lightweight construction such as fiber-reinforced plastic, or a very rigid foam plastic material.

Golf club head construction

A golf club, specifically a driver, has a roughly elliptical face shape oriented so that the long axis of the ellipse is tilted upward at the toe at an angle of 20 degrees or more. This causes better agreement between the hit pattern and the perimeter of the club face, with the important result of minimizing the percentage of impacts which are not completely on the face of the club. This arrangement is for drivers since no other clubs are normally used with a tee and a consequence is that tilting the ball strike region of the face is not helpful for such clubs.

Golf club face for drivers

An apparatus for repairing breaks in safety glass, such as that found on automotive windshields, includes a self-contained, small fixture which can be secured to the windshield and centered on the break. The fixture includes connections for applying a vacuum source for evacuating the break, and for connecting a self-contained and self-supported measured quantity of resin to the fixture so the resin will enter the break while the break remains under a vacuum. The introduction of the resin into the break is thus enhanced, because the break is under vacuum. When vacuum is released, pressure may be applied to the resin to force it into the break to completely fill the break and provide for a visually acceptable repair. Curing of resins can then be carried out in a conventional manner.

Growing community of inventors

Teton Village, WY, United States of America

Frank D Werner