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:
Aug. 20, 1991
Filed:
Oct. 19, 1988
Warren K Braly, Torrington, CT (US);
Brunswick Corporation, Skokie, IL (US);
Abstract
In the production of a matched set of golf clubs, the most accurate method for matching the flex of each shaft in the set is through the use of an electronic frequency analyzer which measures the vibrational frequencies of the shafts or clubs. With most high quality steel shafts, such frequency measurements are generally reproducible and serve as a reliable index of shaft flexibility. It has been found for some shafts, particularly for composite shafts, that frequency measurements taken along different cross-sectional diameters may vary. For such shafts, it has been found that frequency measurements will be reproducible, if the frequency measurement is made on the same diameter. The diameters used for such measurements are marked on the shaft and then employed in the construction of the golf club, such that the diameter is substantially perpendicular to the striking face of the club head.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile