Hose coupling
US4817997A · kind A · utility
Inventor
Key dates
| Filing date | Jun 25, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Jun 25, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L33/2076
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A coupling for connecting a flexible hose to a fluid source, such as a gasoline fuel pump, comprised of a stem member on one end of the coupling for being inserted into the inlet end of the hose, an annular collar member for limiting the depth of insertion of the stem member into the hose and a male threaded member on the opposite end of the coupling for engaging complementary female threads to attach the hose and coupling to the fluid source. A recessed portion is defined between the collar member and male threaded member. The recessed portion has a plurality of relatively flat outer surfaces around the perimeter thereof, which are interconnected to define a square with rounded corners. A cylindrical sleeve member is concentrically disposed on the hose adjacent to the inlet end thereof so that the sleeve member slightly overlaps the inlet end. When the stem member of the coupling is inserted into the hose, the sleeve member is also concentrically disposed with respect to the collar member and the recessed portion. The sleeve member is preferably comprised of a soft, malleable metal material, which is deformable around the flat surfaces of the recessed portion when the sleeve membe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.