Four-stroke-cycle engine provided with belt driven-type...

Details Four-stroke-cycle engine provided with belt driven-type... Four-stroke-cycle engine provided with belt driven-type...

2006-06-20

2006-06-20

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

C123S1950HC

Reexamination Certificate

active

07063063

ABSTRACT:
A four-stroke-cycle engine of a vehicle such as snowmobile comprises a crank case, which is dividable into a plurality of crank case components having mating surfaces, through which the crank case is assembled, a crank shaft rotatably supported in the crank case at a portion between the mating surfaces of the crank case components, and a belt driven-type continuously variable transmission mechanism operatively connected to one end of the crank shaft through a clutch belt. The continuously variable transmission mechanism includes a drive shaft, and the clutch belt is stretched around the drive shaft and the crank shaft so that a tensioning direction of the clutch belt is shifted from a line passing the mating surfaces of the crank case components at a predetermined angle therebetween.

REFERENCES:
patent: 4502345 (1985-03-01), Butterfield
patent: 5216989 (1993-06-01), Iwata et al.
patent: 5301645 (1994-04-01), Ball et al.
patent: 5678516 (1997-10-01), Sakurai
patent: 6079385 (2000-06-01), Wicke
patent: 6609491 (2003-08-01), Itoh et al.
patent: 6631702 (2003-10-01), Tonnqvist et al.
patent: 6904887 (2005-06-01), Higashide et al.

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