Pressure cooker regulator

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Description

FIG. 1 is a top plan view of a pressure cooker regulator embodying our new design;

FIG. 2 is a side elevational view thereof and

FIG. 3 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D143693 January 1946 Zimmer
D148833 February 1948 Welden
D162743 April 1951 Lueneburg
D199923 December 1964 Schlage
2200903 May 1940 Stephens
Other references
  • Pots and Pans for Your Kitchen, Home & Garden Bulletin #2, U.S. Dept. of Agr., Aug., 1950, p. 20, Pressure Weight-Type Control, middle item.
Patent History
Patent number: D253746
Type: Grant
Filed: Apr 10, 1978
Date of Patent: Dec 25, 1979
Assignee: National Presto Industries, Inc. (Eau Claire, WI)
Inventors: Melvin H. Boldt (Glenview, IL), Thurber H. Morrison (Evanston, IL), James P. Stevens (Oak Park, IL)
Primary Examiner: Winifred E. Herrmann
Attorney: John A. Dienner
Application Number: 5/895,284
Classifications
Current U.S. Class: D/7129; D 7/86; D/7132
International Classification: D0702; D1004;