Diaphragm valve

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Description

FIG. 1 is a front, top and left side perspective view of a diaphragm valve showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D88613 December 1932 Allen
D228234 August 1973 Willetts
1855991 April 1932 Saunders
2397373 March 1946 Saunders
2605991 August 1952 Kaye
3268201 August 1966 Little
3310281 March 1967 Boteler
3628770 December 1971 Rost
4214604 July 29, 1980 Rumsey
4545565 October 8, 1985 Sano et al.
Patent History
Patent number: D297971
Type: Grant
Filed: May 28, 1985
Date of Patent: Oct 4, 1988
Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha (Osaka)
Inventors: Yoshihiro Kiyota (Saitama), Toyoji Muratani (Saitama)
Primary Examiner: James R. Largen
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 6/738,208