Flanged pipe part made of fiber-reinforced thermosetting synthetic resin with protective layer preventing crack formation in an angular intersection
US4813457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1988 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | May 16, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A flange made of fiber-reinforced thermosetting synthetic resin comprises at least one flange section extending in an axial direction, which is fitted, or can be fitted, on a tubular part to be provided with a flange. The flange section joins the inside face of the flange which, together with an outside face of the flange, defines the flange. The flange has several fibre-reinforcement layers laid around each other and extending in an axial direction, and which are spirally wound up. The flange section extending in the axial direction also consists of fibre-reinforcement layers and thermosetting synthetic resin. In the region of the angular intersection between the inside face of the flange and the flange section extending in the axial direction, there is situated a reinforcement layer which prevents crack formation and which extends from the inside face of the flange to the flange section extending in the axial direction. The reinforcement layer may be formed by a disc-shaped fibre-reinforcement layer having a central opening or may consists of a layer of spun roving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.