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:
Dec. 26, 1995
Filed:
Sep. 16, 1994
Applicant:
Inventor:
Lloyd E Hackman, Worthington, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ; A63B / ;
U.S. Cl.
CPC ...
273 / ;
Abstract
A method of custom trimming golf club shafts comprising (i) measuring the frequency of oscillation, f.sub.c, of a representative shaft at a plurality of different tipping amounts and effective shaft lengths, (ii) calculating the moment, m.sub.c, of the replica shaft for each effective shaft length, (iii) performing a linear regression on the measured frequencies to obtain the coefficients A and B in the form