Claims
- 1. A method for designing golf clubs with steps including:
- a. mapping first, second, and third vibrational node lines onto a striking face of a first club head on a first club to form a first club node map, wherein said first club is made of a first shaft having a tip end and a butt end, a grip attached to said butt end, and a first club head attached to said tip end and said club;
- b. comparing said first club node map to a desired node map for determining whether said first node map is within acceptable limits of said desired node map; and
- c. replacing said first shaft with a second shaft to form a second club whose resonance properties cause a second node map of said second club to fall within acceptable limits of said desired node map.
- 2. A method as in claim 11 further comprising:
- mapping first, second, and third vibrational node lines of said second club onto a striking face of said first club head on said second club to form a second club node map; and
- comparing said second club node map to either or both of said first club node map and said second node map.
- 3. A method as in claim 2 wherein said second node map of said second club falls completely within a radius of about 20 mm from the geometric center of said first club head.
- 4. A method as in claim 2 wherein the second node map of said second club falls completely within a radius of about 15 mm from the geometric center of said first club head.
- 5. A method as in claim 2 wherein the second node map of said second club falls completely within a radius of about 10 mm from the geometric center of said first club head.
- 6. A method as in claim 2 wherein the second shaft is made of a graphite composite and second node map of said second club falls completely within a radius of about 10 mm from the geometric center of said first club head.
- 7. A method as in claim 2 wherein the second shaft is made of steel and the second node map of said second club falls completely within a radius of about 10 mm from the geometric center of said first club head.
Parent Case Info
This application is a continuation-in-part of U.S. patent application Ser. No. 08/578,167, Dec. 29, 1995, U.S. Pat. No. 5,703,294.
US Referenced Citations (8)
Non-Patent Literature Citations (2)
Entry |
Article--"Using Modal Analysis to Evaluate Golf Club Performance" by Paulo S. Varoto and Kenneth G. McConnell, Iowa State University of Science and Technology, Ames, Iowa, Mar. 1995. |
Article--Modality Synchronization: The Future of Graphite Golf Shafts? Get you clubheads and graphite shafts in harmony, by Tom Dellner, Petersen's Golfing Jan. 1996, pp. 64-65. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
578167 |
Dec 1995 |
|