Composite baseball bat
US4032143A · kind A · utility
43Cited by
14References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1975 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Sep 29, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/5227
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite molded baseball bat is provided using a tubular, high yield strength aluminum core surrounded by a foam plastic body having a density of from 30-50 pounds per cubic foot and an integral outer skin. The tubular aluminum core has an outside diameter of from three-quarters to 1 inch and a wall thickness of from 0.062 to 0.125 inch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.