Composite disk valve for dispensing cartridges
US4830231A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Dec 7, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/76
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a cartridge dispenser for dispensing mayonnaise-like food sauces in measured quantities, a laminated end disk which provides valving for the dispensed material. The end disk includes a paperboard layer for stiffness and rigidity, a polyethylene disk on the paperboard for shielding it from oils, a polyester disk beneath the paperboard for providing the valve, and an inner polyethylene disk allowing the composite disk to be secured on the end of the cartridge dispenser with a food grade adhesive. The polyester disk includes three equality spaced valves each formed by crosshair slits which provide vanes that open when material is being dispensed and quickly and cleanly close at the end of each dispensing stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.