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. 24, 2005
Filed:
Dec. 07, 2001
Hiromichi Ueno, Sakai, JP;
Kaname Ohtsuka, Settsu, JP;
Hiromichi Ueno, Sakai, JP;
Kaname Ohtsuka, Settsu, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
Present invention provides a single screw compressor from which only a small amount of gas to be compressed leaks and which can be manufactured at low costs. There are provided a screw rotorhaving six grooves, . . . and a gate rotorhaving 12 teeth, . . . which are installed in a casing. Since six, which is the number of the grooves of the screw rotor, and twelve, which is the number of the teethof the gate rotor, have a common divisor, only predetermined teethare engaged with a groove. Therefore, engagement combinations of the groovesand the teethare divided into six groups. In each of these groups, dimension accuracy is controlled so that the groovesand the teethengaged each other have appropriate clearances. Since manufacture is easier when dimension accuracy is controlled within each group than when dimension accuracy of all groovesand teethis controlled at one time as in a conventional case, this single screw compressor becomes inexpensive.