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Patent Searching and Data


Title:
DUAL TYPE PUMP UNIT
Document Type and Number:
Japanese Patent JP2001146951
Kind Code:
A
Abstract:

To provide a dual type pump unit capable of effectively suppressing the rise of temperature of a hydraulic oil refilled to a pair of oil pressure lines leading between a hydraulic motor and a hydraulic pump.

The dual type pump unit is equipped with a first and a second hydraulic pump connected with a first and a second hydraulic motor through each pair of oil pressure lines, the first and second, a center section to support the first and second hydraulic pumps, a housing storing the first and second hydraulic pumps and used as an oil tank, and an oil circulating mechanism to take out the oil from the tank and return the oil into it, wherein the oil circulating mechanism is arranged so as to cool the oil circulating.


Inventors:
OHASHI RYOTA
RIZAWA HIRONORI
Application Number:
JP1999000331315
Publication Date:
May 29, 2001
Filing Date:
November 22, 1999
Export Citation:
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Assignee:
KANZAKI KOKYUKOKI MFG CO LTD
International Classes:
F15B11/17; F16H39/02; F16H57/04; F16H61/40; F16H61/4139; F16H61/4165; F16H61/4174; (IPC1-7): F16H39/02; F15B11/17; F16H57/04; F16H61/40
Attorney, Agent or Firm:
藤本 昇 (外2名)