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:
Dec. 31, 2002
Filed:
Jun. 21, 2001
Tsutomu Shirakawa, Kobe, JP;
Keitaro Yonezawa, Kobe, JP;
Kabushiki Kaisha Kosmek, Hyogo, JP;
Abstract
A manifold ( ) is provided with a first passage ( ) for supplying pressurized oil and a second passage ( ) for air venting. The manifold ( ) has a support surface ( ) to which a housing ( ) of every hydraulic cylinder ( ) is hermetically fixed through a sealing member ( ). A piston ( ) is inserted into a cylinder bore ( ) of the housing ( ). A hydraulic chamber ( ) is formed between the piston ( ) and the support surface ( ). The hydraulic chamber ( ) directly opposes to the support surface ( ). The first passage ( ) communicates with the respective hydraulic chambers ( ) through branched passages ( ). The hydraulic chamber ( ) has an upper portion communicated with the second passage ( ) through an air vent passage ( ).