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:
Jul. 13, 2021
Filed:
Oct. 01, 2018
Kosmek Ltd., Kobe, JP;
Ryota Kojima, Kobe, JP;
KOSMEK LTD., Kobe, JP;
Abstract
A piston () is hermetically inserted via a sealing member () in a cylinder hole () provided in a housing () so that the piston () is movable in an up-down direction. A communication passage () provided in an inner peripheral wall of the cylinder hole () is communicatively connected to a lock-side supply and discharge passage () through which pressurized oil is supplied to and discharged from a lock chamber () of the housing (). An opening area (S) of the communication passage () is designed to be smaller than an opening area (S) of the lock-side supply and discharge passage (). When the piston () is caused to move for releasing from a raised position to a lower limit position, the sealing member () is lowered from the raised position beyond the communication passage (), to open communication between a release chamber () in the housing () and the lock-side supply and discharge passage () via the communication passage ().