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Title:
HYDRAULIC CIRCUIT OF HYDRAULIC ELEVATOR
Document Type and Number:
Japanese Patent JP2006044939
Kind Code:
A
Abstract:

To provide a hydraulic circuit of a hydraulic elevator, stably liftable, without causing swinging, when getting in and out of the elevator.

This hydraulic circuit of the hydraulic elevator reduces motive power of a driving source by setting hydraulic pressure of a cylinder for lifting a person and/or cargo loading cage to hydraulic pressure of about 1/2 by adding a balance weight. This hydraulic circuit has a double-acting cylinder or a ram type cylinder for setting its internal pressure to holding pressure in maximum loading weight or no-load, desirably, to predetermined pressure or more, less than the holding pressure, at least when boarding on a cage and/or when loading a cargo.


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Inventors:
HASEGAWA KISAKU
HASEGAWA FUMINORI
NUKADA TAKAO
Application Number:
JP2004232432A
Publication Date:
February 16, 2006
Filing Date:
August 09, 2004
Export Citation:
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Assignee:
OIL DRIVE KOGYO KK
International Classes:
B66B9/04; B66B1/26; B66B1/42; B66B5/02
Attorney, Agent or Firm:
Yoshihiko Hashizume



 
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