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:
Dec. 30, 2003
Filed:
Apr. 23, 2002
Kazuo Maezawa, Yoshida-machi, JP;
Takayuki Minagawa, Yoshida-machi, JP;
Hideto Urasawa, Yoshida-machi, JP;
Twinbird Corporation, , JP;
Abstract
A fluid bearing mechanism using a one-way valve with such a simple structure that high processing accuracy is not required. A one-way valve includes a valve base an abutting portion protruding inwardly, formed with a small communication hole in a center thereof; a moveable element which is moveable inside the valve base in an axial direction; and a retaining body for retaining the moveable element between the abutting portion and itself inside the valve base The retaining body includes ventilation grooves for communicating an inside with an outside of the valve base When the piston is moved toward the compressing direction, the moveable element is shifted toward the inside of the piston due to the inner pressure of the cylinder and its inertial force, thus opening the small communication hole
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile