Hose
US5762108A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1995 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Oct 24, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L33/245
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hose has an inner wall 1 of blow moulded tube and an outer wall 2 of continuous, spirally formed, corrugated tube. At each end of the hose, the inner wall extends further than the outer wall. The walls are separated by a rigid spacer 3 inserted into the end of the outer tube. The walls are united to a moulded connection member 4. This arrangement has a relatively long spigot 5 which extends from a cavity 6. The inner wall is slid onto the spigot as far as the bottom 8 of the cavity. A radially parting mould is placed around the connection member at a nose 9, within which the cavity extends. The mould has an aperture for the outer wall. On injection of material into the mould, the moulding 7 is formed in the cavity 6, along the extent of the inner wall on the spigot 5 as far as the spacer 3 and past the end 10 of this along an end portion 11 of the outer wall. The mould forms the outer diameter of the moulding to the dimension of the nose 9 and limits it from extending along the outside of the outer wall. The spacer limits the moulding from extending inside the outer tube and outside the inner wall. Due to its intimate contact with the walls 1,2 and the connection member 4, the mo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.