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:
Mar. 05, 2002
Filed:
Mar. 08, 2000
Hirokatsu Kohsokabe, Minori, JP;
Kunihiko Takao, Tsuchiura, JP;
Masahiro Takebayashi, Oohira, JP;
Isao Hayase, Tsuchiura, JP;
Hiroaki Hata, Oohira, JP;
Shigetaroo Tagawa, Iwafune, JP;
Kenji Tojo, Moriya, JP;
Takeshi Kouno, Ushiku, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A displacement type fluid machine which is easier to machine and assemble than a scroll type fluid machine and has high performance and low cost. A displacer is revolved in a cylinder having an inside wall formed by a curve such that a planar shape is continuous, whereby a working fluid is discharged through a plurality of discharge ports, there is provided a driving unit in which the orbiting radius of the displacer is variable along the shape of a movement line contact portion of the cylinder and the displacer.