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:
Sep. 18, 2018
Filed:
May. 29, 2014
Orion Machinery Co., Ltd., Suzaka-shi, Nagano, JP;
Yosuke Yoshida, Suzaka, JP;
Shingo Harayama, Suzaka, JP;
Shun Miyazawa, Suzaka, JP;
Humihiko Yamada, Suzaka, JP;
Orion Machinery Co., Ltd., Suzaka-Shi, Nagano, JP;
Abstract
Provided is a two-shaft rotary pump which is capable of improving reliability and operation efficiency by preventing an exhaust gas from flowing backward into a pump as much as possible, preventing the interior of the pump form being excessively compressed as much as possible, and suppressing temperature rise in the pump. A two-shaft rotary pump in which two rotating shafts () provided with rotors () are supported by bearings, such that the two rotors () are rotated in a noncontact manner with a small clearance kept therebetween and the two rotors () are rotated in a noncontact manner with a small clearance between an inner surface of a cylinder () and the two rotors, and a gas sucked into the cylinder () and compressed is discharged from the cylinder (), wherein an escape hole capable of letting a part of the compressed gas escape is provided in at least one of end wall portions () constituting both ends of the cylinder () and opened in the axial direction of the rotating shafts ().