Vehicle frame

Details Vehicle frame Vehicle frame

1997-01-22

1999-11-30

Hurley, Kevin

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180312, 180 684, B62D 2100

Patent

active

059925523

ABSTRACT:
A snowmobile having a lightweight fabricated frame assembly. The frame assembly includes a number of reinforcing elements, some of which comprise heat exchangers for the liquid cooling system of the engine, so as to provide high rigidity and light weight. The engine of the snowmobile is provided with an exhaust system that permits a relatively short effective length, but minimizes pulse-back effects by forming internal expansion chambers around the exhaust branch pipes. The drive for the snowmobile includes a reversing transmission and a brake assembly associated therewith in addition to a main brake assembly for the snowmobile. Furthermore, there is provided a parking brake assembly that is easy to operate and which will provide the operator with a visual and physical warning of its condition so that the operator will not attempt to operate the snowmobile with the parking brake engaged.

REFERENCES:
patent: 3835948 (1974-09-01), Duclo
patent: 3901335 (1975-08-01), Johnson
patent: 5167294 (1992-12-01), Gessinger
patent: 5232066 (1993-08-01), Schnelker
patent: 5251718 (1993-10-01), Inagawa et al.
patent: 5586614 (1996-12-01), Kouchi et al.
patent: 5660245 (1997-08-01), Marier et al.

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