Multiple fluid conveying hose assembly and method of making same
US4517404A · kind A · utility
47Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1983 |
| Grant date | May 14, 1985 |
| Priority date | — |
| Expiry date | Feb 2, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49176
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A multiple fluid conveying hose assembly comprising a principal vacuum conveying hose for a vacuum cleaning system, and a smaller diameter liquid conveying hose passing through its interior. A molded end connector on the principal hose provides an outlet for the smaller hose and serves to separate the ends of the two hoses for use. Alternatively, the hose may utilize reinforcing wire coils which also serve as electrical conductors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.