Composite pipe
US4243075A · kind A · utility
25Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Feb 2, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C53/60
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite reinforced plastic pipe and method of making the same are disclosed wherein a resin impregnated surfacing mat is formed into a tubular inner liner on a mandrel or the like, a plurality of resin impregnated continuous fiberglass strands are helically wound upon the inner liner to form an inner layer, a sand-resin composition is applied onto the inner layer to form a tubular core, and an outer layer of resin impregnated continuous fiberglass strands are helically wound upon the tubular core whereafter the composite pipe is cured to provide a pipe having high resistance to internal and external pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.