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:
Jul. 13, 1999
Filed:
May. 27, 1997
Robert Thomas Blough, Mineral, VA (US);
Ronie Foy McGraw, Glen Allen, VA (US);
Donald Steven Rahrig, Arlington, TX (US);
Lisco, Inc., Tampa, FL (US);
Abstract
A golf club head set having the club head back side divided into four areas, including the perimeter weighted region A; the sweet spot area B located directly behind the ball striking area, two separated non-striking areas C, and the low central region D. The sweet spot area B is further divided into three distinct weight levels, and the low central region D is divided into four additional weight levels. By adding and dropping weight levels as well as by changing the thickness of the levels, the weight distribution of each club head is changed so as to control center of gravity and polar moment of inertia and provide gradated performance specific to each club head in the set.