04967647 is referenced by 28 patents and cites 2 patents.

An improved beverage machine such as a coffee maker in which air is injected from a suitable air supply so as to agitate the coffee and water mixture as the coffee is brewed so as to increase the amount of coffee that is extracted. Various embodiments are disclosed wherein the air is injected at different times in the brewing cycle for different brewing structures.

Title
Air supply for a coffee maker
Application Number
7/402470
Publication Number
4967647
Application Date
September 5, 1989
Publication Date
November 6, 1990
Inventor
Alan M King
465 Cote St. Antoine Rd., Westmount, Quebec
CA
Agent
Hill Van Santen Steadman & Simpson
IPC
A47J 31/36
A47J 31/32
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