Blade for mixing liquids in a conduit

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Description

FIG. 1 is a front view of a blade for mixing liquids in a conduit having our new design.

FIG. 2 is a rear view thereof shown in FIG. 1.

FIG. 3 is a side view taken from the right of FIG. 1; and,

FIG. 4 is a side view taken from the left of FIG. 1.

Referenced Cited
U.S. Patent Documents
170989 December 1875 Cloudman
D226823 May 1973 Landberg
745853 December 1903 Ingraham
2201947 May 1940 Valentine
3887300 June 1975 Quinn
Patent History
Patent number: D255451
Type: Grant
Filed: Dec 12, 1977
Date of Patent: Jun 17, 1980
Assignee: General Signal Corporation (Stamford, CT)
Inventors: Norman R. Herbst (Rochester, NY), Ronald N. Salzman (Rochester, NY), William F. Hutchings (Fairport, NY), William J. Montagno (Rochester, NY)
Primary Examiner: Wallace R. Burke
Assistant Examiner: B. J. Bullock
Attorney: Jeffrey S. Mednick
Application Number: 5/859,353
Classifications
Current U.S. Class: Element Or Attachment (D15/138); Miscellaneous (D15/199)
International Classification: D1599;