Battery powered walk behind floor burnisher

A floor burnisher comprising:

• a frame;
• wheel means supported by the frame for movement over the floor;
• a burnisher subassembly;
• linkage means extending between the frame and the burnisher subassembly for supporting the burnisher subassembly on the frame for movement from a raised inoperative position through an intermediate ready position to a lowered operative position;
• biasing means biasing the burnisher subassembly with an upward force;
• drive means;
• vacuum means carried by the burnisher subassembly and interconnected with the drive means, the vacuum means being an open cell burnishing pad rotatably carried by the burnishing subassembly, the vacuum means exerting a downward force greater than the upward force exerted by the biasing means when the vacuum means is operatively driven by the drive means;
• and
• stop means extending between the burnisher subassembly and the frame, said stop means being capable of maintaining the burnisher subassembly in said ready position, the vacuum means being capable of causing movement of the burnisher subassembly from its intermediate ready position to its lowered position when the vacuum means is driven.

A floor burnisher comprising:

• a main frame;
• wheel means supporting the main frame for movement over a floor;
• a burnisher subassembly laterally offset to one side of the longitudinal center line of the main frame;
• a burnishing pad carried by the burnishing subassembly;
• drive means interconnected with the burnishing pad and capable of rotating the burnishing pad;
• and
• mounting means including linkage means extending between the main frame and the burnisher subassembly for mounting the burnisher subassembly on the frame to the rear of the wheel means for movement between raised and lowered positions.

A battery powered walk behind floor burnisher comprising:

• a main frame capable of supporting a plurality of batteries;
• wheel means supporting the main frame for movement over a floor;
• a burnisher subassembly;
• a burnishing pad carried by said subassembly;
• battery driven drive means interconnected with the burnishing pad and capable of rotating the burnising pad;
• mounting means including linkage means extending between the main frame and the burnisher subassembly for mounting the burnisher subassembly on the frame to the rear of the wheel means for movement from a raised inoperative position through an intermediate ready position to a lowered operative position;
• and
• operator control means mounted on a rear portion of the main frame and disposed above the burnisher subassembly, said control means including switch means capable of sensing movement of the burnisher subassembly as it is moved from its raised operative position to its intermediate ready position, said switch means permitting the battery driven drive means to be powered up when the burnisher subassembly is in its intermediate or lowered operative positions, but not when it is in its raised position.

A battery powered walk behind floor burnisher comprising:

• a main frame capable of supporting a plurality of batteries;
• drive wheel means supporting the main frame for movement over a floor;
• battery driven drive means interconnected with and capable of rotating the drive wheel means;
• a burnisher subassembly;
• mounting means including linkage means extending between the main frame and the burnisher subassembly for supporting the burnisher subassembly on the main frame to the rear of the wheel means for movement between either raised and lowered positions;
• and
• operator control means mounted on a rear portion of the main frame above the burnisher subassembly, said operator control means including a hand grip rotatable about a transverse axis and shiftable between a neutral position, a first forward speed position, and a second higher forward speed to cause corresponding movement of the drive wheel means.

A floor burnisher comprising:

• a main frame;
• wheel means supporting the main frame for movement over a floor;
• a burnisher subassembly;
• vacuum means carried by the burnisher subassembly, said vacuum means consisting essentially of only an open cell rotatable burnishing pad;
• mounting means including linkage means extending between the main frame and the burnisher subassembly for mounting the burnisher subassembly on the main frame for movement between either a raised inoperative position or a lowered relative position;
• biasing means interconnected with the burnisher subassembly and biasing the burnisher subassembly with an upward force;
• and
• drive means interconnected with the vacuum means, the drive means being inoperative when the burnisher assembly is in its raised inoperative position, but being operative and capable of rotating the burnishing pad when the burnisher subassembly is in its lowered operative position, the vacuum means when rotated exerting a downward force greater than the upward force exerted by the biasing means whereby the vacuum means will cause the burnisher subassembly to be maintained in its lowered operative position.

A floor burnisher comprising:

• a frame;
• wheel means supporting the frame for movement over a floor;
• a burnisher subassembly including a circumferentially flanged drive head and a rotatable drive block disposed within the drive head;
• vacuum means and dust collecting means carried at least in part by the burnisher subassembly, the dust collecting means including an outlet on the drive head and a dust bag interconnected with said outlet;
• and
• drive means interconnected with the drive block and capable of rotating the drive block;
• characterized by the vacuum means consisting essentially of only an open cell burnishing pad carried by the drive block, and the dust collecting means including a single peripheral rubber skirt, an upper portion of which is secured to the circumferential flange of the drive head, the skirt further being provided with a lower bellows-shaped portion which insures good conformability with the floor to insure that the very bottom edge of the skirt is maintained in contact with the floor, the skirt providing a seal to the floor and allowing any dust which may be created by the burnishing pad to be confined within the skirt, additional air and dust being pulled under the skirt as the skirt additionally acts as an air valve which controls the vacuum under the burnisher subasssembly.