Multi-material golf club head

Abstract

A multi-material golf club head having an improved performance is disclosed. More specifically, the present invention relates to a multi-material golf club head having a metallic frontal portion and a lightweight aft portion with an addition of an internal ribbon support member. The lightweight aft portion could be formed of a multi-layered sandwich material with at least one layer having low damping properties. The lightweight aft portion may be formed out of a lightweight crown sub-shell and a lightweight sole sub-shell, both of which combine to receive a weighting system.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a Continuation-In-Part (CIP) of U.S. patent application Ser. No. 17 / 675,554, filed on Feb. 18, 2022, which is a CIP of U.S. patent application Ser. No. 17 / 255,862, filed on Apr. 8, 2021, which is a CIP of U.S. patent application Ser. No. 17 / 205,678, filed Mar. 18, 2021, which is a CIP of U.S. patent application Ser. No. 17 / 205,376, filed Mar. 18, 2021, which claims the benefit of U.S. Provisional Application Ser. No. 63 / 106,248 filed on Oct. 27, 2020, U.S. Provisional Application Ser. No. 63 / 112,551, filed Nov. 11, 2020, and U.S. Provisional Application Ser. No. 63 / 119,121, filed Nov. 30, 2020, the disclosure of which are all incorporated by reference in their entirety.FIELD OF THE INVENTION[0002]The present invention relates generally to a multi-material golf club head with improved performance. More specifically, the present invention relates to a multi-material golf club head having a metallic frontal portion...

AI Technical Summary

Benefits of technology

The present invention relates to a golf club head with improved weight distribution and a unique design that creates a sound when the golf club head strikes a golf ball. The golf club head has a frontal striking face portion with one or more threaded receptacles and an aft body attached to the rear of the frontal striking face portion. The aft body has a lightweight shell with one or more weight openings and an internal ribbon support member that attaches to the internal surface of the lightweight shell around a skirt of the lightweight shell. The golf club head also has a frontal volumetric chamber and a rear volumetric chamber separated by a secondary wall. The frontal volumetric chamber is about 82% to 91% of the internal overall volume of the golf club head, and the rear volumetric chamber is about 15% to 20% of the internal overall volume of the golf club head. The internal ribbon support member can have a mass of less than about 5.0 grams. The golf club head produces a sound with a critical time of greater than about 0.01 seconds. The lightweight shell and internal ribbon support member are made from a fiber reinforced polymer. The golf club head has a unique design that creates a sound when it strikes a golf ball.

Problems solved by technology

The issues of adding weights to a golf club head becomes even more complicated when a lightweight composite material is used to form a portion of a golf club head.

Lightweight composite materials, although very strong in an orientation that is perpendicular to their fibers, can often be weak when subjected to forces in alternate orientations.

Hence, adding weighting to a lightweight composite golf club head can often be difficult.

Additionally, the addition of the thickness of the material to strengthen the material around the weight and the addition of support members can create the undesirable effect of adding in weight at locations that is not desirable.

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