Dispensing assembly with a variable-volume compression chamber and with a diaphragm
US5505341A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1994 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Oct 17, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1033
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The dispensing assembly includes a container (8) holding the product, a dispensing head (20) having a dispensing channel (21), a flexible diaphragm (30) possessing a part in the form of a dome (32) which defines, in the dispensing head (20), a variable-volume compression chamber (50) in communication with the container (8); an inlet valve (133) is placed in this communication and allows the product to pass only from the container (1) to the compression chamber (50); the flexible diaphragm (30) is held against the dispensing head (20) by a fixing element consisting of a ring (40) possessing an opening (42) from which the compression dome (32) of the flexible diaphragm (30) emerges. The ring (40) bears an annular projection (41) surrounding the opening (42), the dispensing head (20) being provided with an annular groove (25) receiving an annular groove (34) which the flexible diaphragm (30) possesses and which surrounds the compression dome (32) of the flexible diaphragm (30), the annular projection (41) of the ring (40) being forcibly inserted into the annular groove (34) of the flexible diaphragm (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.