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.

Date of Patent:
Dec. 03, 2002

Filed:

Sep. 28, 2000
Applicant:
Inventors:

Koji Hara, Ibaraki, JP;

Susumu Takada, Ibaraki, JP;

Assignee:

SMC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05G 1/00 ; F01B 1/304 ; F01B 3/00 ;
U.S. Cl.
CPC ...
G05G 1/00 ; F01B 1/304 ; F01B 3/00 ;
Abstract

When one piston A and B moves to the forward edge by the pressured fluid supplied to the head side pressured chamber A and B, two communicating paths A and B communicates the head side pressured chamber A and B with the rod side pressured chamber B and A of other piston B and A. In a rod holding unit plate, the rod holding unit plate is provided such that one engaging unit A and B of the rod holding unit plate is in sliding contact with the side surface of this piston rod A and B to regulate the oscillation during one piston rod A and B is making forward or is setting back. At the same time, the rod holding unit plate is provided such that other engaging unit B and A of the rod holding unit plate is engaged in the hollow of other piston rod B and A located at the forward edge to engage the returning operation of the piston rod.


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