Break-away concentric hose coupling
US5365973A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1993 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Oct 25, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87965
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A break away hose coupling for use in conjunction with a vapor recovery nozzle and for application within a fuel line, that prevents untimely decoupling, that only decouples upon the exertion of a pre-determined amount of tension, while preventing unnecessary leakage of fuel and vapors, while being fully reconnectable. The coupling includes a pair of fittings, for connecting to the fuel line, a sleeve for housing the fittings, and each fitting incorporating a check valve to provide for closure of the fluid flow passage and closure of the vapor flow passage when decoupling occurs, a fluid chamber providing for flow of fluid and a vapor return passage, internal of the fluid flow passage, allowing vapor recovery in a concentric line. The device is pressure compensated to eliminate the effects of line shock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.