Method of making a bowling pin
US4104352A · kind A · utility
5Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1977 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Mar 30, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C39/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method of making a hollow bowling pin comprising a base, body and cap wherein at least said body is composed of a thermoset composition, and said base and cap are composed of a thermoset or thermoplastic composition. The body of said pin may be composed of two or more sections of different hardness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.