Device for dispensing at least one viscous product in dosed quantities
US4722459A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Aug 7, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1084
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The dispenser device in accordance with the invention comprises a tubular barrel filled with the product, a nose having a dispenser orifice, possibly closed by a detachable cap, a plunger and a pump assembly for pressurizing the product to be dispensed. This assembly comprises an obturator valve applied against a seat by a stem of the plunger which is biased by a spring. A skirt of the plunger slides in a socket of the barrel in a leakproof manner only over a portion of its stroke. The depression of the plunger actuates the opening of the valve and the pressurization of a quantity of air under the skirt. Air pressure is exerted on the product to cause it to emerge from the orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.