Device for limiting liquid loss, suitable for a pressurized liquid dispenser
US5704522A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1996 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K15/148
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A device for limiting liquid loss in pressurized liquid dispensers having a membrane, which is elastically deformable and capable of occupying two positions, namely: (a) a resting position in which it has three support zones, namely on a first bearing surface and a second bearing surface and on the protruding part of head of knob; and (b) a deformed position in which its end of larger diameter is raised from the first bearing surface by the stress exerted by the pressurized liquid so as to leave a free passage for said liquid, membrane in this position, however, remaining in contact with the second bearing surface and with the protruding part of knob head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.