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:
Jun. 05, 2012
Filed:
Jan. 15, 2009
James D. Mehaffey, Mooresville, NC (US);
Jason A. Roberge, Cornelius, NC (US);
Frederick E. Bender, Mooresville, NC (US);
James D. Mehaffey, Mooresville, NC (US);
Jason A. Roberge, Cornelius, NC (US);
Frederick E. Bender, Mooresville, NC (US);
Ingersoll-Rand Company, Piscataway, NJ (US);
Abstract
A compressor system includes a lead compressor operable to produce a flow of compressed fluid at a first output and a lag compressor operable to produce a flow of compressed fluid at a second output. The sum of the first output and the second output defines a system output. A lead variable speed motor is operable to drive the lead compressor at a first compressor speed to vary the first output and a lag variable speed motor is operable to drive the lag compressor at a second compressor speed to vary the second output. A sensor is operable to measure a system load, and a lead motor drive is operable to control the speed of the lead variable speed motor and to set a desired operating state of the lag variable speed motor in response to a comparison of the system load and the system output.