Bypass valve for a liquid treatment tank

- Ecowater Systems, Inc.
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Description

FIG. 1 is a front perspective view of a bypass valve for a liquid treatment tank showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is front elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an exploded front perspective view thereof.

Referenced Cited
U.S. Patent Documents
D219340 December 1970 Snelling
D313463 January 1, 1991 Veillet
2997065 August 1961 Johnson
3090396 May 1963 Rudelick
3643692 February 1972 Traylor
4212342 July 15, 1980 Bauer
4237933 December 9, 1980 Bauer
4245670 January 20, 1981 Bauer
4250920 February 17, 1981 Traylor
4255939 March 17, 1981 Ou
4324273 April 13, 1982 Bauer et al.
4361170 November 30, 1982 Peloza
4469131 September 4, 1984 Traylor
Patent History
Patent number: D337633
Type: Grant
Filed: Oct 7, 1991
Date of Patent: Jul 20, 1993
Assignee: Ecowater Systems, Inc. (St. Paul, MN)
Inventors: Michael E. Drager (St. Paul, MN), Edward J. Tischler (St. Paul, MN)
Primary Examiner: James R. Largen
Attorneys: Jon Carl Gealow, James M. Wetzel
Application Number: 7/772,580