Title: Closure lid for closing the opening of a food cooking receptacle

Abstract: A closure lid for effecting an air-tight seal of the opening in a receptacle for the pressurized cooking of food in high temperature, non-aqueous liquids, wherein the closure lid is manually positioned through said opening into the receptacle and is held upwardly into sealing engagement with the rim of said opening by the pressure in said receptacle, said closure lid being manually removable from said opening when the pressure in said receptacle is released.

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Inventors: Albright, Charles Jere (Chicago, IL, US)
Fitch, Sr., Clifford E. (Chicago Heights, IL, US)
Fitch, Jr., Clifford E. (Chicago Heights, IL, US)

Application Number: 367724
Filing Date: 1973-06-07
Publication_date: 1976-01-13
Assignee: Chemetron Corporation (Chicago, IL)
Primary Class(es): 126/190 220/244, 220/378, 248/317, 248/592
Other Classes:
US Patent Ref:

174669	Mar, 1876	Ford	248/204.
563635	Jul, 1896	Wiseman	248/317.
2026799	Jan, 1936	Ragonnet	220/25.
2156166	Apr, 1939	Smith	220/25.
2181195	Nov, 1939	McIlrath	220/3.
2938648	May, 1960	Phelan et al.	220/55.
2955452	Oct, 1960	Myers	220/336.
2998218	Aug, 1961	Elward	248/DIG.
3235213	Feb, 1966	Hall	248/146.
3655411	Apr, 1972	Albright	99/407.
3750825	Aug, 1973	Bachle	220/335.

Other Refs: 310,852

Aug, 1930	UK

Primary Examiner: Dixson, Jr., William T.
Assistant Examiner: Shoap, Allan N.
Attorney: Shoemaker and Mattare