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:
May. 29, 2007
Filed:
Feb. 12, 2004
Masaya Tsunoda, Hyogo, JP;
Masaya Tsunoda, Hyogo, JP;
SRI Sports Limited, Kobe, JP;
Abstract
A method of designing a golf club head, including the steps of using a golf club head model and a golf ball model both of which are composed of a plurality of finite elements; impacting the head model against the ball model; and measuring a time period Tin which the face of the head model is in contact with the ball model and a time period Tfrom the time of contact between the head model and the ball model until the time when a vertical force acting on the face of the golf club head model takes a peak value; setting the ratio of the time period Tto the time period Thigh and increase a frictional force acting in a direction in which the backspin of a golf ball decreases and a period of time in which the frictional force acts.