Hose coupling with double lock
US4366945A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1980 |
| Grant date | Jan 4, 1983 |
| Priority date | — |
| Expiry date | Aug 20, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/924
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The pipe-coupling comprises a socket member adapted to receive a nipple for connecting a compressed air hose to a fixed supply conduit, for example. The nipple can be inserted manually without any additional actuation of the socket member, since locking is effected by spring-loaded locking members which engage in a circumferential groove in the nipple. When the nipple is fully engaged, a valve arranged in the socket member is open, counter to the pressure of a spring. Release of the coupling is effected by two sliding movements, in opposite directions, of a sliding sleeve enclosing the socket member, the first sliding movement releasing the spring-loaded locking members and the second sliding movement releasing further locking members. Between the two unlocking stages, the nipple executes a short axial movement which results in closure of the valve and release of the compressed air present in the hose, so that after the further locking means have been released, the hose with nipple can be removed from the socket member without any danger. A resilient latch member prevents accidental movement of the sliding sleeve back and forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.