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:
Oct. 28, 2003
Filed:
May. 08, 2002
Steven James Holden, Manlius, NY (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
A screw compressor includes a compressor housing defining parallel rotor housing sections, each rotor housing section containing a rotor, and adjacent rotors defining compressor pairs, the housing further including a suction port and a discharge port for each of the compressor pairs, and further including additional ports selected from first closed lobe ports, last closed lobe ports, and economizer ports, wherein at least one of the additional ports is communicated with a first pair of the at least two pairs, and another of the additional ports is communicated with a second pair of the at least two pairs whereby interaction between the additional ports is reduced. In accordance with a further aspect of the invention, configurations are provided so that the first discharge port has a lower volume index ratio (V ) than the second discharge port.