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Publication numberUSD275858 S
Publication typeGrant
Application numberUS 06/383,494
Publication dateOct 9, 1984
Filing dateJun 1, 1982
Publication number06383494, 383494, US D275858 S, US D275858S, US-S-D275858, USD275858 S, USD275858S
InventorsJames K. Wilden
Original AssigneeWilden Pump & Engineering Co.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Double diaphragm pump
US D275858 S
Abstract  available in
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  1. The ornamental design for a double diaphragm pump, substantially as shown and described.

FIG. 1 is a front elevational view of a double diaphragm pump showing my new design;

FIG. 2 is an elevational view of one side thereof, the other side being a mirror image;

FIG. 3 is a back elevational view thereof; and

FIG. 4 is a top plan view thereof.

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US6257845Jul 14, 1998Jul 10, 2001Wilden Pump & Engineering Co.Air driven pumps and components therefor
US6357723Jun 15, 1999Mar 19, 2002Wilden Pump & Engineering Co.Amplified pressure air driven diaphragm pump and pressure relief valve therefor
US6435845Nov 28, 2000Aug 20, 2002Wilden Pump & Engineering Co.Air driven devices and components therefor
US6746637Nov 15, 1999Jun 8, 2004Westinghouse Air Brake Technologies CorporationProcess for making chemical resistant pump diaphragm
US7399168Dec 19, 2005Jul 15, 2008Wilden Pump And Engineering LlcAir driven diaphragm pump
US7517199Nov 17, 2004Apr 14, 2009Proportion Air IncorporatedControl system for an air operated diaphragm pump
US7658598Oct 24, 2005Feb 9, 2010Proportionair, IncorporatedMethod and control system for a pump
US7811067Apr 19, 2006Oct 12, 2010Wilden Pump And Engineering LlcAir driven pump with performance control
US8292600Nov 17, 2005Oct 23, 2012Proportion-Air, IncorporatedControl system for an air operated diaphragm pump
US8360745Oct 12, 2010Jan 29, 2013Wilden Pump And Engineering LlcAir driven pump with performance control
US8496451Jun 21, 2010Jul 30, 2013Wilden Pump And Engineering LlcPump diaphragm
USRE38239 *May 5, 2000Aug 26, 2003Wilden Pump & Engineering Co.Air driven diaphragm pump
U.S. ClassificationD15/7