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:
Feb. 08, 2005
Filed:
Aug. 13, 2001
Akiyuki Harada, Kyoto, JP;
Masataka Takehara, Kyoto, JP;
Akiyuki Harada, Kyoto, JP;
Masataka Takehara, Kyoto, JP;
Towa Corporation, Kyoto, JP;
Abstract
The pressing method includes the first step of displacing a sub-piston provided within a sub-cylinder from its initial position to press working fluid such that the working fluid is introduced via a check valve into a main cylinder to displace a main piston provided therein, and the second step of causing the sub-piston to return to the initial position such that the working fluid is supplied to the sub-cylinder. The first and second steps are repeated successively until the working fluid in the main cylinder attains a prescribed pressure level. With this method, variation in the way of pressing an object is alleviated, contamination due to the working fluid is prevented, and downsizing of the pressing mechanism is enabled.