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:
Apr. 25, 2017
Filed:
May. 31, 2013
Kosmek Ltd, Hyogo, JP;
KOSMEK LTD., Hyogo, JP;
Abstract
A plurality of engagement members (), inserted in a hole in an object to be fixed, which are capable of gripping an inner circumferential surface of the hole are provided, and a wedge face () of a clamping rod () is engaged on an inner circumference of the engagement member () from an upper side. An upper part of a piston rod () protruding upward from a piston body () of a piston () is coupled to a lower part of the clamping rod (). The engagement member (), the clamping rod (), and the piston () are provided in a housing (). An annular valve member () is provided between the housing () and the piston rod (). When the piston () has moved to a lower-limit region in a lock direction, an actuating portion () of the piston rod () causes the valve member () via an actuated portion () of the valve member () to be opened downward.