GEARBOX Russian patent published in 2009 - IPC B60K17/08 

FIELD: transport.

SUBSTANCE: gearbox crankcase represents housing with the main cover bolted to the housing mounting place to form a cavity there between designed to accommodate two primary shafts and one secondary shaft. The said primary shafts represent a hollow outer and an all-metal inner shafts fitted coaxially. A pair of driving gear wheels is fitted on the outer primary shaft and three gear wheels are mounted on the inner primary shaft. The said gear wheels are made integral with the primary shafts so that uneven gearings are driven from the inner primary shaft and even gearings are driven from the outer primary shaft via the clutches. The said clutches are fitted on the secondary shaft. The said gearshift clutches are fitted on the secondary shaft between appropriate gear wheels fitted on the shaft unfixed. The housing accommodates the reverse gears assembly with its primary gear wheel in mesh with the gear wheel made integral with the inner primary shaft, while its secondary gear wheel is in mesh with reverse gear wheel fitted on the secondary shaft. The aforesaid cover is bolted the gearbox housing and, depending upon the axle and engine arrangement, can have an outlet hole and flange sealing device.

EFFECT: higher efficiency of power plant and automatic gear shifting.

1 dwg