Abstract: A riding burnishing machine (10) includes a battery pack positioned as low as possible in the chassis (12) between the front and rear wheels (14, 15) and removable in a horizontal movement direction while supported by the bottom by a pallet jack. A steering system includes steering shafts (58, 76) which are rotatable together while allowing relative pivotable movement therebetween and which are rotatably connected to the spindle (38) of the steerable rear wheels (15) through a jack shaft (44). The burnishing head is raised and lowered relative to the floor surface by an electric actuator (104) which pivots a linkage (92) through a connection allowing floating travel. The pressure which the treating member (16) engages the floor surface is controlled in response to the current level of the electric motor (86) which rotates the treating member (16).

Abstract: A riding burnishing machine (10) includes a battery pack positioned as low as possible in the chassis (12) between the front and rear wheels (14, 15) and removable in a horizontal movement direction while supported by the bottom by a pallet jack. A steering system includes steering shafts (58, 76) which are rotatable together while allowing relative pivotable movement therebetween and which are rotatably connected to the spindle (38) of the steerable rear wheels (15) through a jack shaft (44). The burnishing head is raised and lowered relative to the floor surface by an electric actuator (104) which pivots a linkage (92) through a connection allowing floating travel. The pressure which the treating member (16) engages the floor surface is controlled in response to the current level of the electric motor (86) which rotates the treating member (16).

Abstract: A riding burnishing machine (10) includes a battery pack positioned as low as possible in the chassis (12) between the front and rear wheels (14, 15) and removable in a horizontal movement direction while supported by the bottom by a pallet jack. A steering system includes steering shafts (58, 76) which are rotatable together while allowing relative pivotable movement therebetween and which are rotatably connected to the spindle (38) of the steerable rear wheels (15) through a jack shaft (44). The burnishing head is raised and lowered relative to the floor surface by an electric actuator (104) which pivots a linkage (92) through a connection allowing floating travel. The pressure which the treating member (16) engages the floor surface is controlled in response to the current level of the electric motor (86) which rotates the treating member (16).

Abstract: An apparatus (200) is provided in a floor scrubber (10) for automatically shutting off the motor (60) which rotates an agitator (64) and the motor (96) of a vacuum assembly under various operating conditions of the floor scrubber (10). The current to the motors (60, 96) is detected by devices (204, 206) and monitored by a control circuit (202) controlling devices (208, 210 which interrupt operation of the motors (60, 96). In the preferred form, operation of the agitator (64) is interrupted when the current to the brush motor (60) is less than or equal to a threshold level indicating that the agitator (64) has been raised from the floor surface as the current to the brush motor (60) would be above the threshold level when the agitator (64) engages the floor surface. Operation of the vacuum assembly is interrupted when the current to the vacuum motor (96) drops to a fixed percentage over a period of time from normal operating levels indicating the path of the air in the vacuum assembly has been blocked.