Machine for scrubbing or finishing floor surfaces

• US 7,568,254 B2
• Filed: 04/21/2005
• Issued: 08/04/2009
• Est. Priority Date: 04/23/2004
• Status: Expired due to Fees

• Current Assignee: Numatic International Limited
• Original Assignee: Numatic International Limited
• Inventors: Findlay, John, Duncan, Christopher R.
• Primary Examiner(s): Spisich; Mark
• Application Number:
  US11/111,469
• Publication Number:
  US 20050246845A1
• Time in Patent Office: 1,566 Days
• Field of Search: 15/491, 15/501, 15/98, 153/20, 153/39, 153/402, 153/85, 154/01, 451/350, 451/353
• US Class Current: 15/49.1
• CPC Class Codes: A47L 11/16 the tools being disc brushes
• CPC Class Codes: A47L 11/293 the tools being disc brushes
• CPC Class Codes: A47L 11/4005 Arrangements of batteries or cells; Electric power supply arrangements
• CPC Class Codes: A47L 11/4058 for adjusting the height of the tool

Abstract

The disclosure relates to the floor scrubbing or finishing machines. There is provided a machine for scrubbing or finishing a floor surface comprising carriage means adapted for translational movement over a floor surface, a workhead, an electric motor carried by the carriage means and arranged in use to drive the workhead and battery support means adapted in use to support at least one battery as a source of electric power for driving the electric motor, wherein said battery support means are adapted to support said at least one battery so that said at least one battery can be positioned in a selected one of a range of positions relative to said workhead whereby the loading on said workhead can be varied as required.

Claims

1. A machine for scrubbing or finishing a floor surface comprising carriage means adapted for translational movement over a floor surface, a workhead, an electric motor carried by the carriage means and arranged in use to drive the workhead and battery support means comprising a trolley which runs on rails mounted in said carriage means and adapted in use to support at least one battery as a source of electric power for driving the electric motor, wherein said battery support means are adapted to support said at least one battery so that said at least one battery can be positioned in a selected one of a range of positions relative to said workhead whereby the loading on said workhead can be varied as required by a detent arrangement which comprises a laterally projected pin on a handle and a cooperating locator plate which is formed with a plurality of upwardly opening slots each adapted to receive the pin, the slots being spaced from one another by a short distance in the direction of movement of the trolley along the rails.

2. A machine for scrubbing or finishing a floor surface comprising carriage means adapted for translational movement over a floor surface, a workhead and an electric motor carried by the carriage means and arranged to drive the workhead, battery support means adapted to support at least one battery as a source of electric power for driving the electric motor, wherein the workhead is located at a front end region of the carriage means and transit wheels are disposed towards a rear region of the carriage means so that the weight of the machine is shared between the rear transit wheels and the workhead whilst the machine is in use, characterised in that said battery support means are configured so that said at least one battery can be positioned in a selected one of a range of positions extending between the rear transit wheels and the workhead so as to vary the loading on said workhead.

3. A machine for scrubbing or finishing a floor surface according to claim 2, wherein said battery support means comprises a rolling platform.

4. A machine for scrubbing or finishing a floor surface according to claim 2, wherein said battery support means comprises a trolley which runs on rails mounted in said carriage means.

5. A machine for scrubbing or finishing a floor surface according to claim 4, wherein said trolley is provided with a handle by which it can be pulled or pushed a short distance along the rails within the machine.

6. A machine for scrubbing or finishing a floor surface according to claim 2, wherein a detent arrangement is provided for each of a plurality of selectable ones of said range of positions.

7. A machine for scrubbing or finishing a floor surface according to claim 2, wherein said battery support means comprises a trolley which runs on rails mounted in said carriage means, wherein a detent arrangement is provided for each of a plurality of selectable ones of said range of positions and wherein said detent arrangement comprises a laterally projecting pin on a handle and cooperating locator plate which is formed with a plurality of upwardly opening slots each adapted to receive the pin, the slots being spaced from one another by a short distance in the direction of movement of the trolley along the rails.