Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SWASH PLATE TYPE HYDRAULIC PUMP MOTOR
Document Type and Number:
Japanese Patent JP2005105900
Kind Code:
A
Abstract:

To provide a swash plate type hydraulic pump motor for largely securing the practical volume ratio still in a small type.

This swash plate type hydraulic pump motor has first and second swash plates 30 and 40 for oppositely reciprocating first and second pistons 8 and 9 so as to expand and contract a volume chamber 10 in response to rotation of a cylinder block 4, first and second swash plate bearings 32 and 42 for tiltably supporting the first and second swash plates 30 and 40, a valve element 60 rotatably inserted into the cylinder block 4, a pair of supply discharge ports 61 opening in an outer peripheral surface of this valve element 60, and a cylinder port 11 opening in an inner peripheral surface of the cylinder block 4, and intermittently communicating with these supply discharge ports 61.


Inventors:
SHIMIZU TAKEO
Application Number:
JP2003000338588
Publication Date:
April 21, 2005
Filing Date:
September 29, 2003
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KAYABA INDUSTRY CO LTD
International Classes:
F01B3/00; F03C1/06; F03C1/24; F03C1/26; F04B1/20; F04B1/22; (IPC1-7): F04B1/22; F03C1/06; F03C1/24; F03C1/26
Attorney, Agent or Firm:
後藤 政喜
松田 嘉夫



 
Previous Patent: SUBMERGED PUMP

Next Patent: ENGINE CONTROL DEVICE