Abstract: The invention provides golf clubs and methods of making golf clubs with machined perimeter faces. The club faces provide an accurate ball striking surface and improved aerodynamics. In particular, a surface is milled into the club face that expands over an edge of a ball striking surface and onto a portion of the face adjacent to at least one of a crown, a sole, a toe, or a heel. During a swing, the milled surface causes the boundary layer of airflow to separate at a point closer to the rear of the club head, resulting in reduced drag.
Type:
Grant
Filed:
August 2, 2019
Date of Patent:
November 17, 2020
Assignee:
COBRA GOLF CORPORATION
Inventors:
D. Clayton Evans, Cameron J. Day, Michael T. McDonnell, Ryan L. Roach, Douglas E. Roberts, Bryce Hobbs, Yi-ching Liao
Abstract: A golf club head with a multi-material construction in which a portion of the club head is a first material such as engineered stone or concrete and a second portion of the club head is a second material such as a metal, thermoplastic, or a composite.