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Patent Searching and Data


Title:
HYDRAULIC CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
Japanese Patent JP2000257693
Kind Code:
A
Abstract:

To provide a structure of a hydraulic continuously variable transmission for achieving improvement of efficiency, reduction of cost and reduction of noise, concerning a hydraulic continuously variable transmission constituted of a hydraulic pump and a hydraulic motor.

A pair of kidney ports of a valve plate 41 interposed between a plunger block 21b and an oil passage plate 32 is formed by press working, cutout parts 41b each of which has the opening area gradually decreased toward the end of the kidney port 41a are formed, and oil grooves 32e for releasing pressure of high-pressure oil entering between the valve plate 41 and the oil passage plate 32 is formed on the oil passage plate 32 at parts positioned near both ends of the kidney ports 41.


Inventors:
NOZAKI TAKEAKI
MOCHIZUKI YASUHISA
NANKO MASAKI
SASAHARA KENGO
Application Number:
JP1999000061044
Publication Date:
September 19, 2000
Filing Date:
March 09, 1999
Export Citation:
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Assignee:
YANMAR DIESEL ENGINE CO
International Classes:
F16H39/12; F16H61/40; F16H61/4139; (IPC1-7): F16H39/12; F16H61/40
Attorney, Agent or Firm:
矢野 寿一郎