Disposable pressure container, in particular for use as a refill container for refrigerating and air conditioning systems
US5305925A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1992 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Jul 30, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D49/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A disposable pressure container is provided with a combined filling and removing valve which comprises a valve body (11) which is slidably guided in a bore of a valve housing (8) and pressed by a resilient force against a valve seat and which is liftable from its valve seat during filling and removing operations. Furthermore, the valve has a second valve body (22) which, before the container is filled for the first time, is spaced from its valve seat (16) by a surmountable and fluid-permeable barrier (17, 18). After the container has been filled, the second valve body (22) is pressed beyond barrier (17) and forms, together with its valve seat (16), a check valve which prevents container (1) from being filled anew. To produce an inexpensive valve, valve housing (8) is made integral with a first bore (10) for receiving the first valve body and a second bore (15) for receiving the second valve body (22) made of a plastic material. At the end opposite to the first valve seat (9 ), the first bore (10) has a radially inwardly oriented shoulder (14) which is made integral with the housing and has formed thereon projections (18) that project radially inwards into the circular plan view of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.