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. 09, 2011
Filed:
Jan. 17, 2006
Ming Zhang, Ballwin, MO (US);
Sesha C. Madireddi, St. Charles, MO (US);
Byeongchul NA, Sate College, PA (US);
Ming Zhang, Ballwin, MO (US);
Sesha C. Madireddi, St. Charles, MO (US);
Byeongchul Na, Sate College, PA (US);
Hussmann Corporation, Bridgeton, MO (US);
Omega Piezo Technologies, Inc., State College, PA (US);
Abstract
A method and system of controlling the temperature of a refrigeration system. In an embodiment, an expansion valve for a refrigeration system comprises an entry portion, an exit portion, and a flow control portion including a piezo material. The entry portion is configured to allow refrigerant to flow into the expansion valve. The exit portion is configured to allow refrigerant to flow from the expansion valve. The flow control portion is disposed between the entry portion and the exit portion, and is configured to control a volume of refrigerant that passes through the expansion valve.