Lightweight tennis racket having high frequency
US6106417A · kind A · utility
16Cited by
19References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Jun 22, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2209/023
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A lightweight, high stiffness tennis racket includes a frame having a handle portion with butt end, head portion, and strings supported by the head portion. The racket is formed from a composite material including carbon fibers, titanium fibers, and epoxy resin and includes a length of at least about 27 inches, weight of less than about 9.2 ounces when strung, and a frequency of vibration of the first mode of bending under free-free constraint of at least about 175 Hz. The racket includes a vibration damping unit located about at the racket handle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.