Metal bat for use in baseball
US5104123A · kind A · utility
58Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Nov 1, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2102/18
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A metal bat for use in baseball is disclosed which includes a tubular metal body having an impact portion for hitting a ball, and a layer of a resin foam provided on and bonded to the inside wall of the impact portion and having a density of 0.05-0.5 g/cm.sup.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.