US 2008/0282823 A1Published application

Transmission for tractor

AssigneeLS Cable Ltd.

InventorsHyo-jung Kim, Hyung-tai Kim, Sang-heon Lee

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Abstract

A transmission for a tractor has an input shaft receiving power from an engine, an idle shaft disposed parallel with the input shaft, an output shaft disposed parallel with the idle shaft and transmitting power to a main transmission part, forward/reverse driving gears installed on the input shaft so as to rotate idle, a forward/reverse clutch installed between the forward driving gear and the reverse driving gear to selectively connect the forward driving gear or the reverse driving gear to the input shaft, a forward driven gear installed on the idle shaft and engaged with the forward driving gear, a reverse driven gear installed on the idle shaft and engaged with the reverse driving gear, high speed/low speed driving gears installed between the forward driven gear and the reverse driven gear so as to rotate idle, a high speed/low speed clutch installed between the high speed driving gear and the low speed driving gear to selectively connect the high speed driving gear or the low speed driving gear to the idle shaft, and high speed/low speed driven gears installed on the output shaft and engaged with the high speed driving gear and the low speed driving gear, respectively.

Claims2

Dependent claims

A transmission for a tractor comprising:

an input shaft (100) receiving power from an engine;
an idle shaft (200) disposed parallel with the input shaft (100);
an output shaft (300) disposed parallel with the idle shaft (200) and transmitting power to a main transmission part;
forward/reverse driving gears (110 and 120) installed on the input shaft (100) so as to rotate idle;
a forward/reverse clutch (501) installed between the forward driving gear (110) and the reverse driving gear (120) to selectively connect the forward driving gear (110) or the reverse driving gear (120) to the input shaft (100);
a forward driven gear (210) installed on the idle shaft (200) and engaged with the forward driving gear (110);
a reverse driven gear (220) installed on the idle shaft (200) and engaged with the reverse driving gear (120);
high speed/low speed driving gears (230 and 240) installed between the forward driven gear (210) and the reverse driven gear (220) so as to rotate idle;
a high speed/low speed clutch (502) installed between the high speed driving gear (230) and the low speed driving gear (240) to selectively connect the high speed driving gear (230) or the low speed driving gear (240) to the idle shaft (200);
and
high speed/low speed driven gears (310 and 320) installed on the output shaft (300) and engaged with the high speed driving gear (230) and the low speed driving gear (240), respectively.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/068,997Filed 14 Feb 2008
Priority: KR 10-2007-004806617 May 2007
Published: 20 Nov 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F16H 37/043
Change gear transmissions in group arrangement: without gears having orbital motion
F16H 2003/0936
With two or more countershafts: with multiple countershafts comprising only two idle gears and one gear fixed to the countershaft
F16H 2037/044
Without gears having orbital motion: comprising a separate gearing unit for shifting between forward or reverse
F16H 2037/045
Without gears having orbital motion: comprising a separate gearing unit for shifting between high and low ratio range

Family

US 7,874,224 B2Related patent
US 2008/0282823 A1This patent

From the US filing history. Foreign family members aren’t listed.

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