Method of winding a fiber-resin composite pressure fluid cylinder
US5435868A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1993 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Aug 26, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2001/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Hydraulic cylinders made of fiber-resin composite materials have a central piston chamber section and bell-shaped internally threaded end sections. Cylinders are made by winding resin coated fibers over a mandril over which externally threaded sleeves are slipped and spaced apart so as to define the end sections. After curing the resin, the winding is cut in the areas of the sleeves to separate the cylinders. An expendable strip is wound onto the sleeves and in the cutting operation is cut into. A bearing, a seal cavity and an enlarged inside diameter at a piston rod end of the cylinder may also be provided using a method of the invention, with the cylinders being cut apart between the ends of sleeves and between the other ends of the cylinders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.