Hexagonal installation key for a flow meter

- Dwyer Instruments, Inc.
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Description

FIG. 1 is a top and one side perspective view of the hexagonal installation key for a flow meter showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is an end elevational view thereof as viewed from either the left or right of FIG. 3;

FIG. 7 is a top and opposite side perspective view thereof;

FIG. 8 is a bottom perspective view thereof taken from the same side as FIG. 7.

Referenced Cited
U.S. Patent Documents
D161569 January 1951 Bushman
D261854 November 17, 1981 Nielsen
D277160 January 15, 1985 Antone
2592037 April 1952 Keiser
2702653 February 1955 Goldenberg
3815209 June 1974 Basile
Foreign Patent Documents
134939 November 1919 GBX
Patent History
Patent number: D287456
Type: Grant
Filed: Jun 20, 1984
Date of Patent: Dec 30, 1986
Assignee: Dwyer Instruments, Inc. (Michigan City, IN)
Inventor: Duane M. Kobos (LaPorte, IN)
Primary Examiner: Susan J. Lucas
Assistant Examiner: C. E. Heflin
Law Firm: Mann, McWilliams, Zummer & Sweeney
Application Number: 6/622,482
Classifications
Current U.S. Class: D 8/24; D 8/14; D 8/40