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. 23, 1986
Filed:
Apr. 02, 1985
Applicant:
Inventors:
Eiji Sato, Ibaraki, JP;
Tamio Fukuda, Ibaraki, JP;
Masaharu Ishii, Ibaraki, JP;
Mitsuru Nakamura, Ibaraki, JP;
Yozo Nakamura, Ibaraki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ; F01B / ;
U.S. Cl.
CPC ...
417214 ; 417216 ; 417418 ; 417254 ; 92131 ;
Abstract
In a free piston type oscillating compressor, closed spaces separate from gas springs are provided, and pressures of the closed spaces are regulated, whereby the amplitude, and central position of the stroke, of a free piston can be precisely controlled.
Sato, Eiji. (1986). Piston stroke control device for free piston type oscillating compressors (U.S. Patent No. 4613285). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4613285
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile