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. 21, 2002
Filed:
Feb. 03, 2000
Applicant:
Inventor:
Seiichirou Takeshita, Tsuchiura, JP;
Assignee:
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 2/966 ;
U.S. Cl.
CPC ...
F04D 2/966 ;
Abstract
A fan apparatus includes a fan having a plurality of blades and producing an air flow with revolution thereof. At least one shroud is disposed upstream of the fan for introducing the air flow to the suction side of the fan. Damping means are provided for taking in the air flow coming out of the fan and damping a radial component of the air flow under an interference action outside an outer periphery of the fan.
Quick Actions:
Takeshita, Seiichirou. (2002). Fan device and shroud (U.S. Patent No. 6390770). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6390770
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile