Excavating – Snow or ice removing or grooming by portable device – Motorized rotary excavating tool
Reexamination Certificate
2008-12-30
2010-06-08
Beach, Thomas A (Department: 3671)
Excavating
Snow or ice removing or grooming by portable device
Motorized rotary excavating tool
C037S244000, C037S238000, C037S248000, C180S053100
Reexamination Certificate
active
07730642
ABSTRACT:
An engine of a snow blower is arranged with a crankshaft along a front to rear direction of the snow blower, and an output shaft, with an outer circumferential portion on which a drive pulley is fixed, is provided in a front end portion of the crankshaft. Further, an intermediate shaft with a rear end circumference on which a driven pulley is fixed and with a front end circumference, on which an impeller drive pulley is fixed, is arranged to extend toward a front direction higher than the output shaft. An impeller drive shaft with a rear end circumference on which an impeller driven pulley is fixed is arranged to extend toward the front direction more downward than the intermediate shaft. A first transmission belt is meshed with the drive pulley and the driven pulley, and a second transmission belt is meshed with the impeller drive pulley and the impeller driven pulley. Using this arrangement, it is possible to provide a snow blower with a low center of gravity.
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Beach Thomas A
Keating & Bennett LLP
Yamaha Motor Power Products Kabushiki Kaisha
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