Drum pump

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Description

FIG. 1 is a perspective view taken from the bottom, front and right side of a drum pump showing my new design;

FIG. 2 is another perspective view taken from the top, rear and left side thereof; and

FIG. 3 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D10000 April 1877 Heinigku
D115814 July 1939 Deters
1338739 May 1920 Lano
1466804 September 1923 Orr
1517805 December 1924 Spaeth
1610637 December 1926 Wertz
2344005 March 1944 Sundholm
3473479 October 1969 Sundholm
4114782 September 19, 1978 Berry
Other references
  • Willis Pumps Ltd., brochure on Barrel Pump K-4.
Patent History
Patent number: D256945
Type: Grant
Filed: Dec 13, 1978
Date of Patent: Sep 16, 1980
Assignee: Le-Cas Limited (Warrington)
Inventor: Karl Willis (Lymm)
Primary Examiner: James R. Largen
Attorney: Roberts B. Larson
Application Number: 5/969,196
Classifications
Current U.S. Class: D23/14
International Classification: D2301;