Fitting for a sanitary hose
US7380837B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 3, 2005 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Mar 16, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49913
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fitting for a sanitary hose assembly includes a rigid, tubular stem, a cylindrical ferrule, and an annular seal, which coact with the end of the hose to achieve a uniformly leakproof seal for a material flow path through the hose and into the fitting. One end of the ferrule extends over the outer end of the hose, such that the ferrule engages the hose and extends slightly beyond the hose. An inner end of the stem extends through an outer end of the ferrule and into the hose, such that the outer surface of the stem frictionally engages the internal surface of the hose. The stem has an outer end adapted to connect to a similar structure, internal threads which cooperatively engage similar threads on the ferrule, and an outwardly directed land adjacent the threads. The threaded coupling of the stem and the ferrule fixes their relative axial relationship, and also axially compresses the annular seal between. The ferrule is radially crimped to compress the end of the hose between the stem and the ferrule. This combination of components provides a circumferentially uniform and leakproof seal between the hose and the fitting, at relatively low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.