Cartridge having sheared thinned areas for promoting opening for beverage extraction
US5948455A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Mar 20, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D85/8046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A cartridge which contains a substance for preparation of a beverage and for use for preparation of the beverage. The cartridge has a base, a wall, a rim and a cover. The wall extends from the base to form a cup shape which is substantially a frustum shape, the rim extends from the wall and has a diameter greater than the base and the cover is welded to the rim to contain the substance in the cartridge. The base further has sheared areas thinned, with respect to a base remainder, which extend to define arrangements which are spiral, substantially sinusoidal portions, radial segments and concentric arcs of a circle and which, along a line of each sheared area to define thickness, have a thickness which varies along the line, the sheared areas providing, upon extraction of the substance in the cartridge under pressure, openings through the base for filtering and obtaining the beverage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.