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. 16, 2007
Filed:
Apr. 10, 2003
Hiroshi Saegusa, Kanagawa Prefecture, JP;
Kazunori Ono, Kanagawa Prefecture, JP;
Hiroshi Saegusa, Kanagawa Prefecture, JP;
Kazunori Ono, Kanagawa Prefecture, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Abstract
Evaluation of the durability or the coefficient of restitution of a golf club headis performed by measuring a response signal of an impact surfaceof a golf club headwhen imparting a vibration to the impact surface, finding a value of the peak frequency of the first resonance frequency or the like located within a predetermined frequency range of the measured response signal, and finding the ratio of this peak frequency value with respect to a reference value. Further, control of the quality of the restitution characteristics in a initial state, or quality of the golf club head that deteriorates over time, is conducted by utilizing the evaluation results. The golf club headis provided with a labelfor displaying the peak frequency measured immediately after manufacture as an initial value. Further, in manufacturing a golf club, the quality of the golf club head immediately after manufacture is controlled by the peak frequency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile