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. 04, 1994
Filed:
Dec. 30, 1992
Applicant:
Inventor:
Lloyd E Hackman, Worthington, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
273 / ; 273 / ;
Abstract
A method for measuring the swing time of a golfer's swing and selecting a golf club having the inverse of four times its natural frequency which is approximately equal to the swing time. The golfer's swing time is defined as the time elapsed between maximum acceleration of a club head during downswing until ball impact. In the preferred embodiment, an accelerometer is mounted within the club head and is connected to an electronic data processor. A graph of club head acceleration versus time is plotted and the swing time is measured from the graph, between peak acceleration and ball impact.