Title:
【発明の名称】シリンダ装置
Document Type and Number:
Japanese Patent JP3022551
Kind Code:
B1
Abstract:
The inside of a cylinder is divided into front and rear cylinder chambers, a primary-side piston and a secondary-side piston, each formed by an annular disc part and an annular tube part are fitted into each cylinder chamber, with the annular tube parts of each loosely fitted together, and the secondary-side piston surrounding an operating piston rod so as to hold the operating piston and being fit into the operating piston. The first front cylinder chamber and the second rear cylinder chamber defined by the primary- and secondary-side pistons are connected by a communicating passageway with a relief valve inserted therein, this relief valve being switched to the open condition by either a prescribed pressure or a valve opening/closing bar that is provided upright on the primary-side piston.
Inventors:
▲やぎ▼下 龍三
Application Number:
JP7750899A
Publication Date:
March 21, 2000
Filing Date:
March 23, 1999
Export Citation:
Assignee:
Nambu Co., Ltd.
International Classes:
B22D17/20; B29C45/67; F15B11/028; F15B11/032; F15B15/14; F15B15/16; (IPC1-7): F15B11/028; B22D17/20; B29C45/67; F15B15/16
Domestic Patent References:
| JP55126111A | ||||
| JP8210310U | ||||
| JP4947226B2 |
Attorney, Agent or Firm:
Toshikazu Nagai