05297472 is referenced by 20 patents and cites 10 patents.

A beverage extraction machine in which powdered material such as coffee is mixed with hot water in an extraction chamber which is mounted over a beverage receiver with a filter mounted between them. High pressure air is supplied into the beverage receiver and passes up through the filter to agitate the hot water and powdered material in the extraction chamber. Then air is sucked from the beverage receiver and drums the brewed coffee from the extraction chamber through the filter into the beverage receiver where it is discharged to a cup. A pressure sensor can be used to control the application of the high and low pressure air.

Title
Beverage extraction device
Application Number
7/953005
Publication Number
5297472
Application Date
September 29, 1992
Publication Date
March 29, 1994
Inventor
Michio Seshimo
Gunma
JP
Hisashi Karasawa
Gunma
JP
Mitsuo Suzuki
Gunma
JP
Agent
Hill Steadman & Simpson
Assignee
VKI Technologies
CA
IPC
A47J 31/32
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