Quick coupling device
US4375297A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 25, 1980 |
| Grant date | Mar 1, 1983 |
| Priority date | — |
| Expiry date | Dec 25, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L41/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A quick coupling device for fluid tight, especially temporary connection to a threaded pipe nipple (2) or the like, e.g. for use in tightness tests or leak detection. The device comprises two portions which are axially movable relative to each other, namely a cylindrical casing (3) and a piston (4) displaceably mounted therein. The casing and/or the piston are adapted (5) for permanent connection to a pressurized fluid conduit, and the piston has a through opening (9) permitting the flow of pressurized fluid to the pipe nipple (2). According to the invention, one (e.g. the piston (4) of the axially movable portions is provided with a thread dimensioned to be screwed into engagement with the thread of the pipe nipple (2), whereas the other portion (e.g. the casing 3), at its axial end surface, has a ring gasket (8) dimensioned to seal against the axial end surface of the pipe nipple upon screwing said one portion (4) into engagement with the pipe nipple and displacing the other portion (3) axially against the pipe nipple (2). (FIG. 1)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.