William R Arbus

US Patent:

53397070, Aug 23, 1994

Filed:

Dec 31, 1992

Appl. No.:

7/999746

Inventors:

William J. Arbus - American Fork UT

International Classification:

F16H 5702

US Classification:

74606R

Abstract:

A compound transmission comprises two simple type transmissions, each having a mainshaft to provide a main transmission section and an auxiliary transmission section interconnected end-to-end by an interposed, dividing wall, which may be in the form of an adaptor plate. A power input drive leads into the free end of the main transmission section, while a power output tailshaft leads from the free end of the auxiliary transmission section. The mainshaft of the main transmission section extends through the dividing wall, is journaled therein, and terminates within the auxiliary transmission section as an auxiliary power input drive therefor. The auxiliary transmission section is provided with speed change gears that may be selectively employed with selected ones of normal speed change gears provided by the main transmission section to multiply the number of normal speed change gears available in the compound transmission, the power input speed ratio between the main transmission section and the auxiliary transmission section being such that the speed change gears added by the auxiliary transmission section are able to utilize the peak power range of any engine with which the compound transmission is used.