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:
May. 08, 2012
Filed:
Apr. 21, 2006
Alan James Caughley, Christchurch, NZ;
David Haywood, Christchurch, NZ;
Alan James Caughley, Christchurch, NZ;
David Haywood, Christchurch, NZ;
Industrial Research Limited, Lower Hutt, NZ;
Abstract
A pressure wave generator () for driving one or more cryogenic refrigerator systems. The pressure wave generator () comprises a housing with one or more inlet/outlet ports () through which generated pressure waves of gas may pass through to drive a cryogenic refrigerator system or systems connected to the inlet/outlet ports (). The pressure waves are generated by at least on pair of opposed diaphragms () located in the housing that are moveable in a reciprocating motion within the housing to create pressure waves in gas spaces () associated with each diaphragm (). The gas spaces () each having associated inlet/outlet ports () through which the pressure waves may pass. An operable drive system is also provided to move the pair of diaphragms () in a reciprocating motion.