Pizza die with seal
US6398539B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Aug 23, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/047
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pizza die includes an outer die ring and a plate ring. The outer die ring and an inner die plate are spring-biased away from the die mount plate. The outer die ring includes a plurality of axial ridges located on a portion of the inner circumferential surface of the outer die ring. The inner die plate includes a step on which a flexible seal is seated. A spring-biased plate ring compresses the flexible seal on the seat. The flexible seal includes axial grooves on its outer circumference. The axial grooves engage with the corresponding axial ridges on the outer die ring. The axial grooves act as passageways to vent trapped air within the pizza die. The axial ridges provide a self-cleaning mechanism to remove pizza dough lodged in the axial grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.