The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1999
Filed:
Aug. 05, 1997
Raymond B Bushnell, Oregon City, OR (US);
Arizona Green Pump, Inc., Tucson, AZ (US);
Abstract
A diaphragm pump is powered by fluctuating pressure in a pressurized conduit. A three way valve is cycled to alternately pressurize and vent the pump. A power diaphragm drives a piston having a skirt with a reduced end wall to displace a quantity of hydraulic fluid from a pump chamber to drive a pumping diaphragm. An inlet of the pump admits a quantity of fluid to be discharged via a pump outlet. A spring component biases the piston to return same upon venting of the pressurized conduit. The diaphragm pump is shown in a pumping system wherein a primary pump and an intermittently cycled three way valve operate the diaphragm pump to inject fluid into the output conduit from the primary pump.