The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
Nov. 11, 2009
Applicant:
J. Andrew Galloway, Escondido, CA (US);
Inventor:
J. Andrew Galloway, Escondido, CA (US);
Assignee:
Callaway Golf Company, Carlsbad, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
A63B 53/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention discloses an iron-type golf club head in which the sole portion has a main surface and a stepped surface. Further, the sole portion comprises a chromium coating. The invention creates a unique combination of head shape and surface friction coefficients that minimize the bad effects of turf impact.