High pressure reinforced hydraulic hose
US4262704A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Jul 9, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L11/24
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Hydraulic circuits having flexible hydraulic hoses forming part of the circuits are currently being operated at pressures in excess of 3,000 psi, and such circuits are often limited in their operating pressure by the burst strength of the hydraulic hose. By constructing a hollow core structure that forms the conduit and which serves as the foundation upon which the reinforcing is applied, with a two-layer tape composed of a layer of fabric and a layer of elastomer, which tape is then wound on a mandrel in a helically overlapping relationship with the fabric on the outside, an improved hose can be obtained after the reinforcing is applied. An increase in burst strength can be obtained in such a hose where wire cable is employed as the reinforcing in place of monofilament wire reinforcing, when the cable is formed (twisted) as it is applied, to achieve a more uniform tension on each of the strands forming the cable encircling the core structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.