Hydraulic cylinder device

Details Hydraulic cylinder device Hydraulic cylinder device

2006-11-21

2006-11-21

Look, Edward K. (Department: 3745)

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

Single valve for plural rigidly connected working members

Reexamination Certificate

active

07137331

ABSTRACT:
A pair of hydraulic cylinders10which are coupled to a driven member, placed parallel to each other and extend/contract in synchronization with each other, and a control valve20which controls hydraulic fluid supplied to or discharged from the hydraulic cylinder10are provided. An elastic support mechanism50which supports the control valve20to each hydraulic cylinder between the paired hydraulic cylinders10; metallic piping30and the metallic piping40which connect the control valve20with the respective hydraulic cylinders10and leads the hydraulic fluid controlled by the controlling valve20; and curved portions31c, 32, 41c, 42awhich are provided at some midpoints of the piping and flexibly deform in accordance with relative deformation of each hydraulic cylinder10are provided. A difference in relative displacement of each hydraulic cylinder with respect to the control valve20is absorbed by deformation produced in the elastic support mechanism50and the curved portions.

REFERENCES:
patent: 1195980 (1916-08-01), Davis
patent: 2001099356 (2001-04-01), None
patent: 2000-205999 (2002-01-01), None

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