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:
Dec. 26, 2017
Filed:
Mar. 26, 2010
Applicants:
Paul Nemit, Jr., Waynesboro, PA (US);
Angela Marie Comstock, Roanoke, VA (US);
William L. Kopko, Jacobus, PA (US);
Inventors:
Paul Nemit, Jr., Waynesboro, PA (US);
Angela Marie Comstock, Roanoke, VA (US);
William L. Kopko, Jacobus, PA (US);
Assignee:
Johnson Controls Technology Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 18/16 (2006.01); F04C 28/12 (2006.01); F04C 28/16 (2006.01); F04C 28/18 (2006.01); F04C 28/26 (2006.01); F04C 28/06 (2006.01);
U.S. Cl.
CPC ...
F04C 28/26 (2013.01); F04C 18/16 (2013.01); F04C 28/06 (2013.01); F04C 28/12 (2013.01); F04C 28/125 (2013.01); F04C 28/16 (2013.01); F04C 28/18 (2013.01);
Abstract
A system is provided for adjusting the volume ratio of a screw compressor. The system can use a port in a rotor cylinder to bypass vapor from the compression chamber to the discharge passage of the compressor. A valve can be used to open or close the port to obtain different volume ratios in the compressor.