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. 05, 1987
Filed:
Apr. 17, 1985
Applicant:
Inventors:
Assignee:
Tokico Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417206 ; 417244 ;
Abstract
A vacuum pump includes a rotary vacuum pump including a pair of rotors cooperating to suck gas, a driving source connected to a shaft of one of the pair of rotors, timing gears connected to respective shafts of the rotors and transmitting the driving force of the driving source between the shafts of the pair rotors, and a reciprocating vacuum pump connected to the driving source and connected to the downstream side of the rotary vacuum pump for sucking gas therefrom.
Nitta, Michio. (1987). Vacuum pump system including serially connected rotary and reciprocating (U.S. Patent No. 4662826). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4662826
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile