Curved pipe and process and apparatus for producing the same
US5960834A · kind A · utility
13Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1995 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Nov 16, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/08
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An FRP curved pipe, particularly suitable for an FRP racket, good in resin flowability and deaeration at the time of molding, less in surface defects and excellent in strength can be obtained by a structure comprising an inner layer including a reinforcing fiber and an outer layer including a non-woven fabric having a single fiber diameter of not greater than 20 .mu.m and a weight per unit area of not greater than 100 g/m.sup.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.