Valve actuator

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Description

FIG. 1 is a side elevational view of the valve actuator showing our new design, the opposite side being the same as the side shown;

FIG. 2 is another side elevational view thereof with the membrane omitted;

FIG. 3 is a side elevational view of the membrane, the other sides being the same as the side shown;

FIG. 4 is a perspective view taken from the bottom and side of FIG. 1;

FIG. 5 is a perspective view taken from the bottom and side of FIG. 2;

FIG. 6 is a perspective view taken from the top and side of FIG. 1;

FIG. 7 is a perspective view taken from the bottom and side of FIG. 3; and

FIG. 8 is a perspective view taken from the top and side of FIG. 3.

Referenced Cited
U.S. Patent Documents
D96405 July 1935 Murphy
D152809 February 1949 MacCauley
D168641 January 1953 St. Clair et al.
D186489 October 1959 Frye
D236266 August 1975 Holben
3246872 April 1966 Seltsam
3422850 January 1969 Caldwell
3426798 February 1969 Chernak
3802462 April 1974 Troseh
3838707 October 1974 Wachowitz, Jr.
4014514 March 29, 1977 Priese et al.
4316482 February 23, 1982 Pearep
4421295 December 20, 1983 Parkison
Patent History
Patent number: D322657
Type: Grant
Filed: Dec 8, 1989
Date of Patent: Dec 24, 1991
Inventors: Nils I. Aarthun (Partille), Peter Lofgren (Hov.ang.s)
Primary Examiner: James R. Largen
Law Firm: Wegner, Cantor, Mueller & Player
Application Number: 7/447,707
Classifications
Current U.S. Class: Valve Or Body Therefor (D23/233)