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. 10, 2013
Filed:
Aug. 26, 2009
Takahiro Sakai, Kanagawa, JP;
Tomoyoshi Ohnuki, Kanagawa, JP;
Takao Nagai, Kanagawa, JP;
Piolax Inc., Yokohama-Shi, Kanagawa, JP;
Abstract
An air damper is provided which can exhibit an appropriate braking force in accordance with an input load. There is provided an air damper including: a tubular cylinderin which both end portions are opened; a pistonwhich moves within the cylinderand a capwhich closes a one-end opening of the cylinder, wherein the cylinderhas an annular seal surfaceformed on a circumferential surface of the one-end opening, wherein the cap is mounted on the one-end opening side of the cylinderso as to be moveable or deformable along an axial direction of the cylinder, wherein the cap is brought into contact with or separated from the seal surfacein accordance with a pressure change due to a movement of the pistonwithin the cylinder, and wherein a first orificeis opened in a base plateof the cap, characterized in that: a second orifice having an inlet area smaller than the first orifice is defined between the capand the cylinderduring an operation of the first orifice