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. 02, 2003
Filed:
Dec. 19, 2001
Nikkiso Co., Ltd., Tokyo, JP;
Abstract
A centrifugal pump for pumping low temperature fluid includes a motor portion driving an impeller of a pump portion. The motor portion and impeller are coaxial. A pot, sealed to the pump portion, receives the low temperature fluid. The low temperature fluid contacts only the pump portion in the pot, thereby reducing the overall heat capacity of the centrifugal pump to reduce start time. A heat insulating jacket is in tight contact with the motor portion. A vent pipe extends from the pot, through the pump portion and within the heat insulating jacket, to a rear of the motor portion to increase safety and provide double-insulation to the vent pipe. The heat insulating jacket reduces the size and surface area of the centrifugal pump to resist heat flow and increase safety.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile