Patent ID: 7712232
Filing Date: 2010-05-11
Classification: E01H

Abstract:
1. A two function snow blower attachment having a concentric axis fan and auger, the auger having the function of gathering and directing snow to the fan and the fan being a blower and having the function of ejecting the snow from the snow blower attachment, the fan and auger being independently powered by respective dedicated fan and auger motors and being axially operably coupled for independent rotation of the fan and auger, a hydraulic assembly having a first fluid coupling to the fan motor and a second fluid coupling to the auger motor for selective independent control of the respective fan motor and the auger motor, the hydraulic assembly having relief valve means for relieving hydraulic pressure to the auger via the second fluid coupling independent of hydraulic pressure to the fan via the first fluid coupling in the event of auger stoppage.