Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Reexamination Certificate
2000-06-27
2001-11-20
Pezzuto, Robert E. (Department: 3671)
Excavating
Snow or ice removing or grooming by portable device
Motorized rotary excavating tool
Reexamination Certificate
active
06318003
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present arrangement relates to an improved snow thrower assembly characterized by its compactness.
2. Prior Art
Conventional snow throwers are relatively large pieces of equipment resulting in significant part from the arrangement used for transmitting power from the engine to an auger which moves snow to a discharge chute. The auger typically is disposed for rotation about a horizontal axis. This requires, therefore, that the engine have either a horizontal output shaft or that the output from a vertical output shaft be translated for rotation about a horizontal axis for use by the auger. In either case, such mechanisms are normally cumbersome so as to contribute to the overall size of a snow thrower.
SUMMARY OF THE INVENTION
The present invention permits a single piece housing to support the snow thrower's engine, wheels and auger drive shaft. A belt drive is connected between a vertical output shaft of the engine and the horizontally disposed auger drive shaft. An idler arrangement is employed which permits the belt drive to be selectively engaged. When the belt drive is disengaged, the belt is braked without separation occurring between the belt and drive arrangement for the driver. The overall arrangement of components results in a snow thrower which is extremely compact.
REFERENCES:
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patent: 3580351 (1971-05-01), Mollen
patent: 3691860 (1972-09-01), Danuser
patent: 4255879 (1981-03-01), Greider
patent: 4294027 (1981-10-01), Edwards
patent: 4322896 (1982-04-01), Miyazawa et al.
patent: 4756101 (1988-07-01), Friberg et al.
patent: 5434118 (1995-07-01), Cobile
patent: 6022285 (2000-02-01), Firdaus
Joyce Kevin E.
Murray Inc.
Pezzuto Robert E.
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