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:
Feb. 17, 2004
Filed:
Dec. 11, 2001
Fumito Komatsu, Nagano, JP;
Kenji Muramatsu, Nagano, JP;
Yuki Nakamura, Nagano, JP;
Tomohiro Takeuchi, Nagano, JP;
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Abstract
A rotary cylinder apparatus which prevents a fluid from leaking from a contact portion of a piston and a cylinder member and consequently enables efficient rotation. The rotary cylinder apparatus comprises: a rotary cylinder member which has cylinder chambers and formed thereto so as to pass through a rotary shaft center O and rotates around the rotary shaft center O; pistons and demonstrating reciprocating linear motion in the cylinder chambers and ; a piston holding member which holds the pistons and and rotates around a rotation center X eccentric from the rotary shaft center O of the rotary cylinder member ; and a casing which rotatably supports the rotary cylinder member and has at least one inlet and at least one outlet , wherein the pistons and are rotatably supported at a position away from the rotation center X of the piston holding member by a fixed distance and with that position at the center thereof.