Floor cleaning or burnishing machine pivot suspension

• US 9,635,990 B2
• Filed: 11/17/2015
• Issued: 05/02/2017
• Est. Priority Date: 11/18/2014
• Status: Active Grant

• Current Assignee: Diversey Taski Incorporated
• Original Assignee: NSS Enterprises Inc.
• Inventors: Fellhauer, Jeffery R.
• Primary Examiner(s): KARLS, SHAY LYNN
• Application Number:
  US14/943,114
• Publication Number:
  US 20160249779A1
• Time in Patent Office: 532 Days
• CPC Class Codes: A47L 11/162 having only a single disc brush
• CPC Class Codes: A47L 11/4072 Arrangement of castors or wheels

Abstract

A pivot suspension has two separate wheels and a channel, which has two ends axially extending across a floor cleaning or burnishing machine. One wheel is attached to a first end of the channel and the other wheel is attached to a second end of the channel. The pivot suspension further has a pivot rod that is pivotably attached to and is in line from front to rear with the machine. The pivot rod is fixedly connected to the channel at a location between the two channel ends. As a result, the wheels and channel are pivotably attached to the machine, by way of the pivot rod. In combination with at least one wheel or caster that is attached to a frame of the machine, the two channel wheels form three points of contact with a floor, even if there is dirt, debris, and unevenness on or in the floor.

Claims

1. A floor cleaning or burnishing machine comprising:

a pivot suspension, comprising;

at least two separate rear drive wheels;

a channel having two ends and axially extending across a rigid frame of a floor cleaning or burnishing machine, wherein a first of the rear drive wheels is rotatably attached to a first end of the channel and a second of the rear drive wheels is rotatably attached to a second end of the channel; and

a pivot rod disposed in line from front to rear of the floor cleaning or burnishing machine, pivotably connected to the ridged frame of the floor cleaning or burnishing machine, and fixedly attached to the channel at a location between the two ends of the channel, so that the rear drive wheels are in a pivotable relationship with the ridged frame of the floor cleaning or burnishing machine.

2. The floor cleaning or burnishing machine of claim 1 wherein the channel is hollow.

3. The floor cleaning or burnishing machine of claim 1 wherein the pivot rod is connected at both ends thereof, by separate bearings.