04127216 is referenced by 17 patents and cites 2 patents.

A venting closure assembly extending across an access opening on the top part of a tank, particularly a milk tank. There is a venting closure member having perimeter flange members which fit against a support ring of the milk tank to form one or more circumferential venting channels. A cover having a vent opening fits over the closure member and engages the peripheral portions thereof to form a circumferential seal against the support ring. The venting channel or channels connect to circumferentially spaced openings on the flanges to provide venting from inside the tank to the area outside the tank, while preventing both spilling of the milk and contamination from outside sources.

Title
Venting closure assembly for milk tank or the like
Application Number
774874
Publication Number
4127216
Application Date
January 3, 1978
Publication Date
November 28, 1978
Inventor
David C Waschke
Everson
WA, US
Timothy J Martin Jr
Lynden
WA, US
Agent
Robert B Hughes
Assignee
Light Industrial Design Co
WA, US
IPC
B65D 51/16
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