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:
Jan. 10, 2017
Filed:
Feb. 12, 2013
Kosmek Ltd., Hyogo, JP;
Yosuke Haruna, Hyogo, JP;
Hideaki Yokota, Hyogo, JP;
KOSMEK LTD., , JP;
Abstract
An output rod () is inserted in a housing () so as to be movable vertically. A first piston () inserted in a lower part of the housing () is fixed to the output rod (). A second piston () inserted on an upper side of the first piston () is fitted on the output rod () so as to be movable vertically. A lock chamber () is provided between the first piston () and the second piston (). A first release chamber () is provided below the first piston (). A second release chamber () is provided above the second piston (). During force multiplication driving of the output rod (), a pressurized fluid in the lock chamber () carries out the force multiplication driving with respect to the output rod () downward via the second piston () and engaging balls (). A retaining spring () which biases the second piston () upward is provided in the lock chamber () between the first piston () and the second piston ().