Impeller for comminuting equipment

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of an impeller for comminuting equipment showing our new design;

FIG. 2 is a front elevational view thereof.

The undisclosed bottom is unornamental.

Referenced Cited
U.S. Patent Documents
D268498 April 5, 1983 Bagby
3196916 July 1965 Urschel
3255646 June 1966 Urschel
3823880 July 1974 Urschel
3955767 May 11, 1976 Hise
3989196 November 2, 1976 Urschel
4090673 May 23, 1978 Ackers et al.
4513919 April 30, 1985 Terrenzio
4521996 June 11, 1985 Grund et al.
Patent History
Patent number: D285085
Type: Grant
Filed: Oct 27, 1983
Date of Patent: Aug 12, 1986
Assignee: Urschel Laboratories, Inc. (Valparaiso, IN)
Inventors: Robert R. Fischer (Michigan City, IN), Joe R. Urschel (Valparaiso, IN)
Primary Examiner: B. J. Bullock
Assistant Examiner: Suzanne N. Gitlin
Attorney: Charles S. Penfold
Application Number: 6/546,197
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)