US Patent 7503756 Multi pumping chamber magnetostrictive pump

Patent 7503756 was granted and assigned to Pratt & Whitney Canada on March, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Pratt & Whitney Canada

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75037560

Patent Inventor Names

Kevin Allan Dooley0

Date of Patent

March 17, 2009

Patent Application Number

113721050

Date Filed

March 10, 2006

Patent Primary Examiner

‌

Charles G Freay

Patent abstract

A positive displacement pump includes a magnetostrictive actuator. A single actuator drives multiple pumping chambers. The pump may include two pumping chambers driven in phase by the linear expansion of the actuator at both its ends. The pump may include a third pumping cavity, driven by the transverse expansion and contraction of the actuator, out of phase with either cavity driven by the lengthwise extension of the actuator. A pump assembly having multiple pumps each including a magnetostrictive element is also disclosed.