Title:
SMALL-SIZED CRAWLER TRACTOR
Document Type and Number:
WIPO Patent Application WO/2007/049368
Kind Code:
A1
Abstract:
A small-sized crawler tractor producing excellent feeling of rotation. A hydraulic
transmission mechanism for rotation includes a hydraulic stepless speed change
pump for rotation and a hydraulic stepless speed change motor for rotation. The
hydraulic stepless speed change pump is a variable displacement pump. The output
of the hydraulic stepless speed change motor is inputted in a differential mechanism.
The combination of an HST for rotation and the differential mechanism provides
excellent feeling of rotation.
Inventors:
TSUJITA MASAFUMI (JP)
KITAYAMA KOZO (JP)
YOKOYAMA KAZUHISA (JP)
YAMASHITA YUMIKO (JP)
KITAYAMA KOZO (JP)
YOKOYAMA KAZUHISA (JP)
YAMASHITA YUMIKO (JP)
Application Number:
PCT/JP2006/300723
Publication Date:
May 03, 2007
Filing Date:
January 19, 2006
Export Citation:
Assignee:
YANMAR CO LTD (JP)
TSUJITA MASAFUMI (JP)
KITAYAMA KOZO (JP)
YOKOYAMA KAZUHISA (JP)
YAMASHITA YUMIKO (JP)
TSUJITA MASAFUMI (JP)
KITAYAMA KOZO (JP)
YOKOYAMA KAZUHISA (JP)
YAMASHITA YUMIKO (JP)
International Classes:
B62D11/18; B60K17/10; B62D21/18; F15B11/02; F15B11/08
Foreign References:
| JP2003237618A | 2003-08-27 | |||
| JP2003291848A | 2003-10-15 | |||
| JP2005067606A | 2005-03-17 | |||
| JP2003291847A | 2003-10-15 | |||
| JPH01132801U | 1989-09-08 | |||
| JP2004330829A | 2004-11-25 | |||
| JPH08142906A | 1996-06-04 | |||
| JP2002337757A | 2002-11-27 | |||
| US6286620B1 | 2001-09-11 | |||
| JP2000159143A | 2000-06-13 | |||
| JP2002145134A | 2002-05-22 | |||
| JP2004017841A | 2004-01-22 | |||
| JP2004066913A | 2004-03-04 | |||
| US3371734A | 1968-03-05 | |||
| EP1555190A1 | 2005-07-20 |
Other References:
See also references of EP 1950123A4
Attorney, Agent or Firm:
WATANABE, Satoshi (18-20 San-eich, Shinjuku-ku Tokyo 08, JP)
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