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:
Nov. 27, 2018
Filed:
Jan. 13, 2017
Showa Corporation, Gyoda-shi, JP;
Naoki Senou, Gyoda, JP;
SHOWA CORPORATION, Gyoda-Shi, JP;
Abstract
One embodiment provides a pressure buffer device including: a cylinder that stores fluid; a flow path forming portion that forms a flow path; and an opening-closing portion that opens and closes the flow path of the flow path forming portion. The fluid flows through the flow path forming portion in accordance with relative movement of a rod with respect to the cylinder in an axial direction of the cylinder. The flow path forming portion includes an annular first protruded portion and an annular second protruded portion protruded in the axial direction in opposite sides respectively. The second protruded portion has an axial end located at a radially outer side of the first protruded portion, and a tilt portion formed at least at a part of a radially-inner part of the second protruded portion.