Title:
液圧-機械式トランスミッション
Document Type and Number:
Japanese Patent JP2004510112
Kind Code:
A
Abstract:
A hydro-mechanical transmission having a planetary system with three planetary gear sets including a reversing planetary gear set together with two clutches and a reverse brake to provide an infinitely adjustable speed change over the speed range from -20 kph to 60 kph without an additional direction change gear set. The transmission has two forward speed ranges and one reverse speed range. The planetary system has fixed mechanical and hydrostatic power input elements and a fixed output element. The low and high range clutches and the reverse brake direct power flow through the transmission along different paths to produce the different gear ratios. Transmission efficiency is maximized at the field use speed and the transport road speed where an agricultural tractor is most often operated.
Inventors:
Douglas Rene, Johnson
Petz, Craig Alan
Otten, Ulrich
Petz, Craig Alan
Otten, Ulrich
Application Number:
JP2002530556A
Publication Date:
April 02, 2004
Filing Date:
September 12, 2001
Export Citation:
Assignee:
DEERE AND COMPANY
International Classes:
A01B51/02; F16H47/04; (IPC1-7): F16H47/04; A01B51/02
Domestic Patent References:
| JPH0650410A | 1994-02-22 | |||
| JPH0650410A | 1994-02-22 |
Foreign References:
| DE19843069A1 | 1999-05-06 | |||
| US4382392A | 1983-05-10 | |||
| GB2011560A | 1979-07-11 | |||
| DE19843069A1 | 1999-05-06 | |||
| US4382392A | 1983-05-10 | |||
| GB2011560A | 1979-07-11 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shigeo Takeuchi
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shigeo Takeuchi