03967635 is referenced by 16 patents and cites 7 patents.

A valve for a carbonator having an internal check valve movable between two operable positions depending upon whether the carbon dioxide or the pressure water has the greater pressure, (these being the ingredients of the carbonated fluid being sought). When the carbon dioxide positions the check valve, venting openings having an aligned relation cause harmless venting of the carbon dioxide to atmosphere, thereby obviating any possible contamination of the water source by the carbon dioxide. When the pressure water positions the check valve, a consequence of such movement is that a sealing ring occupies an interposed position between the venting openings to prevent any water leakage therethrough during this interval of operation.

Title
Valve for carbonator
Application Number
5/521654
Publication Number
3967635
Application Date
November 7, 1974
Publication Date
July 6, 1976
Inventor
Paul Rosenbaum
84-57 Goldington Court, Rego Park, 11374
NY, US
Andrew I Sealfon
305 W. 13th St., New York, 10014
NY, US
Agent
Bauer Amer & King
IPC
F16K 45/00
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