Dispensing head and unit provided with a closing system permitting fresh air intake
US5927568A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D51/1611
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A dispensing head (102) has at least one dispensing duct (103) for a product to be dispensed, a movable lid (150), and a closing system, permitting fresh air intake, for closing the end portion of the dispensing duct. The closing system is formed by an obturator (105A) made of an elastically deformable material and by at least one seat (115) made of a rigid material. The obturator is in contact with its associated seat when no dispensing takes place, moves away from the said seat by elastic deformation under the thrust of the product to be dispensed, and when the dispensing stops returns by elasticity into a position which permits the renewed air intake. The seat is provided with at least one stop which prevents the obturator from elastically returning into a leakproof position. When the lid is closed, a rigid element of the lid (152) comes to bear on the obturator and causes the latter to return into a leakproof closing position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.