HYDRAULIC STEPLESS TRANSMISSION

Title:

HYDRAULIC STEPLESS TRANSMISSION

Document Type and Number:

WIPO Patent Application WO/2007/144975

Kind Code:

A1

Abstract:

[PROBLEMS] A hydraulic stepless transmission having increased layout freedom and a compact structure with the functions of conventional hydraulic stepless transmission retained and having increased easiness of production. [MEANS FOR SOLVING PROBLEMS] In the hydraulic stepless transmission (1), the movable swash plate (input side swash plate (6)) of a variable displacement plunger hydraulic pump or motor is tilted by a hydraulic servo mechanism (3). The hydraulic servo mechanism (3) has a power piston (15) connected to one end of the input side swash plate (6) and tilting it, a servo spool (13) placed normal to the direction of sliding of the power piston (15) and substantially in parallel to the input side swash plate (6), and a feedback link (24) for connecting the servo spool (13) and the input side swash plate (6).

Inventors:

EGUCHI SHINGO (JP)
OUCHIDA TAKESHI (JP)
SHIOZAKI SHUJI (JP)

Application Number:

PCT/JP2006/323180

Publication Date:

December 21, 2007

Filing Date:

November 21, 2006

Export Citation:

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Assignee:

YANMAR CO LTD (JP)
EGUCHI SHINGO (JP)
OUCHIDA TAKESHI (JP)
SHIOZAKI SHUJI (JP)

International Classes:

F16H39/14

Foreign References:

JP2005083498A	2005-03-31
JPS6330650A	1988-02-09
JPH05296343A	1993-11-09

Other References: