Patent ID: 9120376
Filing Date: 2015-09-01
Classification: B60K,B60W,B60Y,E01H,Y10T

Abstract:
1. A large single engine sweeper operable in either a road mode or a sweep mode, said large single engine sweeper including a rolling vehicle chassis, said rolling vehicle chassis being constructed and arranged for the mounting and positioning of a chassis brake system, a chassis engine, a chassis automatic transmission connected to said chassis engine, a front drive shaft connected to said chassis transmission, a two-mode transfer case connected to said front drive shaft, a rear drive shaft connected to said two-mode transfer case, and a chassis differential and rear wheel drive assembly attached to said rear drive shaft along with a debris pick-up and picked-up debris containment system mounted on said rolling vehicle chassis, said chassis engine speed being controlled by the position of a variable position accelerator pedal when the large single engine sweeper is in road mode, said large single engine comprising: a propel hydraulic pump and propel hydraulic motor combination constructed and arranged to receive mechanical torque from the two-mode transfer case in the sweep mode; said propel hydraulic motor constructed and arranged to provide mechanical torque to said two-mode transfer case for moving the large single engine sweeper in the sweep mode; means for controlling the hydraulic fluid output of said propel hydraulic pump to said propel hydraulic motor using the variable position accelerator pedal when the large single engine sweeper is in sweep mode; whereby in the sweep mode, said variable position accelerator pedal is disconnected from the chassis engine speed control and connected to said propel hydraulic pump to control the flow of hydraulic fluid to said propel hydraulic motor and when returned to the road mode, the variable position accelerator pedal is disconnected from said propel hydraulic pump and reconnected to the chassis engine speed control.