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:
May. 26, 2015
Filed:
Jul. 31, 2012
Shun Orihara, Saitama-gun, JP;
Yasunaga Suzuki, Kitakatsushika-gun, JP;
Naoki Hoshi, Matsudo, JP;
Hiroyuki Asahara, Tsukuba, JP;
Shun Orihara, Saitama-gun, JP;
Yasunaga Suzuki, Kitakatsushika-gun, JP;
Naoki Hoshi, Matsudo, JP;
Hiroyuki Asahara, Tsukuba, JP;
SMC KABUSHIKI KAISHA, Tokyo, JP;
Abstract
In a fluid pressure cylinder, a piston is displaced in an axial direction under the action of a pressure fluid. A circular protrusion, which projects toward the piston along an axial direction of the cylinder tube, is formed on an inner end surface of a collar member constituting part of the fluid pressure cylinder, a concavity, which can be fitted externally over the circular protrusion, is formed on the piston, and an annular groove is formed on an inner circumferential edge of an end plate. By the piston coming into contact with the end plate, a pressure receiving chamber is formed between the piston and the annular groove, together with an opening of a second port on an inner side of the cylinder tube being closed to a maximum of 90%.