Apparatus for dispensing flowable materials from a pouch
US5330074A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1993 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | May 12, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D1/0001
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An improved piston for a pouch dispenser is disclosed. The dispenser is adapted to contain a pouch of flowable material, and has a lid to keep the pouch within the dispenser and a piston which is adapted to move toward the lid and press against a first end of the pouch, and push the flowable material out of the pouch through a hole in the second end of the pouch. The piston has a peripheral lip extending towards the second end of the pouch. The peripheral lip extends for a length sufficient to cause the film from which the pouch is made to pleat in a direction transverse from which the pouch is made to pleat in a direction transverse to the longitudinal axis of the dispenser when the material in the pouch is squeezed from the pouch by the pressing action of the piston. The lid and piston are adapted to allow the peripheral lip to nest with the lid and to prevent the pleats from hindering essentially all of the material from being squeezed out of the pouch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.