초록 ▼

A battery powered walk behind floor burnishing unit (10). The unit includes a main frame (12) supported by wheel means (18, 20, 36), the main frame being capable of supporting a plurality of batteries (14). At least one of the wheels (18) may be driven. A burnisher subassembly (22) is mounted on the

A battery powered walk behind floor burnishing unit (10). The unit includes a main frame (12) supported by wheel means (18, 20, 36), the main frame being capable of supporting a plurality of batteries (14). At least one of the wheels (18) may be driven. A burnisher subassembly (22) is mounted on the rear of the frame by a mounting assembly for movement through an from a raised inoperative position through an intermediate ready position to a lowered operative position. The burnisher subassembly includes a drive head (80) and a rotatable drive block (94), the drive block being capable of being rotated by a motor (24) mounted on the drive head. The mounting assembly includes two pairs of parallel links (126, 128) and biasing means (140, 142) which normally biases the subassembly (22) to the raised inoperative position. A vacuum apparatus includes an open cell burnishing pad (114) carried by the burnisher subassembly. The vacuum apparatus is capable of maintaining the burnisher subassembly (22) in contact with a floor during operation of the motor (24), and is also capable of moving the burnisher subassembly into contact with the floor when the motor is operated and the burnisher subassembly is in its ready or intermediate position. Operator controls (182, 184) are provided at the rear of the machine above the burnisher subassembly.

대표청구항 ▼

A floor burnisher comprising: a frame; wheel means supporting the frame for movement over a floor; a burnisher subassembly, said burnishing subassembly including a drive head provided with a pair of laterally spaced apart upwardly extending brackets, each bracket being provided with a pair of vertic

A floor burnisher comprising: a frame; wheel means supporting the frame for movement over a floor; a burnisher subassembly, said burnishing subassembly including a drive head provided with a pair of laterally spaced apart upwardly extending brackets, each bracket being provided with a pair of vertically spaced apart pivot pin receiving apertures one of said pair of pivot pin receiving apertures being elongated; linkage means extending between the frame and the burnisher subassembly for supporting the burnisher subassembly upon the frame for movement between either a raised inoperative position or a lowered operative position, the linkage means including two pair of laterally spaced apart parallel links pivotally connected at the forward ends to the frame and pivotally connected at their rear ends to the laterally spaced apart upwardly extending brackets by pivot pins which extend into said apertures; a burnishing pad carried by the burnishing subassembly; and drive means interconnected with the burnishing pad and capable of rotating the burnishing pad.