Air driven diaphragm pump


FIG. 1 is a front perspective view of an air driven diaphragm pump showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being identical in appearance;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D268413 March 29, 1983 Wilden
D275858 October 9, 1984 Wilden
D294946 March 29, 1988 Wilden
D294947 March 29, 1988 Wilden
Other references
  • Graco Inc.--Air Powered 16 GPM Diaphragm Pump (Husky 715) .COPYRGT.1987. Warren Rupp-Houdaille-1/2" SandPiper Air-Powered Double Diaphragm Non-Metallic Pump (PB1/2-A) .COPYRGT.1988. ARO Corporation-1/2" Diaphragm Pumps .COPYRGT.1987.
Patent History
Patent number: D331412
Type: Grant
Filed: Nov 13, 1989
Date of Patent: Dec 1, 1992
Assignee: Wilden Pump & Engineering Co. (Colton, CA)
Inventor: deceased Wilden (late of Yucaipa, CA)
Primary Examiner: A. Hugo Word
Assistant Examiner: R. Seifert
Law Firm: Lyon & Lyon
Application Number: 7/434,761