Fluid delivery system for generating pressure pulses to make beverages
US6405637B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Jan 13, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/057
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Apparatus includes a water reservoir, a container for containing flavor-containing materials and a fluid delivery system for generating a plurality of pressure pulses, each including a water pulse and a steam pulse, and for delivering the pressure pulses through the flavor-containing materials. This extracts the useful compounds out of the flavor-containing materials under the pressure of the pressure pulses. The fluid delivery system includes a chamber, a heater in heat conducting relation with the chamber, a valve disposed between the reservoir and the chamber which opens to permit water to flow from the reservoir to the chamber when pressure in the chamber drops below a predetermined pressure. Method for making flavor-containing liquid with a plurality of pressure pulses includes generating and delivering a first pressure pulse in the form of a pressurized hot water pulse and a pulse of pressurized steam to and through the flavor-containing materials in a container. The flavor-containing materials is extracted by the pulse of pressurized hot water under the pressure of the first pressure pulse and are dried or potentially re-roasted by the pulse of pressurized hot steam. The nex…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.