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.:

US 6471497 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 29, 2002

Filed:

Apr. 25, 2001
Applicant:
Inventors:

Yoshinari Suzuki, Kariya, JP;

Naoki Goto, Kariya, JP;

Mamoru Kuwahara, Kariya, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03C 2/00 ;
U.S. Cl.
CPC ...
F03C 2/00 ;
Abstract

Fixed throttle devices A, B, C, D are screw-engaged with a rotor housing . A fixed throttle device is screw-engaged with a front housing , and a fixed throttle device is screw-engaged with a rear housing 14. Inert gas is supplied to the respective throttle devices A, B, C, D, and via branch pipes to . Each of the throttle devices A, B, C, D, and includes a check valve , a fixed throttle screw-engaged with the check valve , and a pipe joint screw-engaged with the check valve


Find Patent Forward Citations

Suzuki, Yoshinari. (2002). Gas supplying device for vacuum pump (U.S. Patent No. 6471497). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6471497

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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