Title:
DELIVERY CONTROL DEVICE FOR HYDRAULIC PUMP
Document Type and Number:
Japanese Patent JP3768566
Kind Code:
B2
Abstract:
PURPOSE: To increase pump delivery instantly in the event an actuator is operated in a hydraulic system that negatively controls the delivery of a hydraulic variable-displacement pump.
CONSTITUTION: This delivery control device for hydraulic pumps comprises a branch line branched from a pilot line 13 for changing the swash-plate tilt angle of a hydraulic pump P and adapted to return pilot oil from the pilot line 13 to a tank T, and a relief valve 16 provided in the branch line so as to be opened by a preset pressure applied thereto.
Inventors:
Dae Seung Chun
Application Number:
JP18836695A
Publication Date:
April 19, 2006
Filing Date:
June 30, 1995
Export Citation:
Assignee:
Volvo Construction Equipment Holding Sweden Sweden
International Classes:
F04B49/00; F04B1/20; F04B49/08; F15B11/02; (IPC1-7): F04B49/00; F04B1/20
Domestic Patent References:
| JP6017758A |
Foreign References:
| US4124333 |
Attorney, Agent or Firm:
Kazuo Shigenobu
Hideo Shimizu
Yuichi Takagi
Yoshinao Nakano
Hideo Shimizu
Yuichi Takagi
Yoshinao Nakano
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