Nilfisk-advance, Inc.

Alto U.S. Inc.

Kevin Blaine Mitchell

Emert R Whitaker

James J Keazer

John L Obenshain

Vibration dampening elements that are made of rubber and/or an elastomer may fail when subjected to vertical and/or horizontal stresses caused by repeated lifting of the cleaning head assembly and/or unintentional bumping of the cleaning head assembly into door frames, walls or other non-movable objects. The present invention includes, among other things, at least one stabilizer element and preferably two stabilizer elements to reduce damage to certain vibration dampening elements caused by vertical and/or horizontal stress. Alternative embodiments of the stabilizer element are also disclosed.

Orbital scrubber with stabilizer element

A floor surface treatment apparatus having a wheeled vehicle including a support for a floor surface treatment unit, the support being moveable relative to the vehicle. A floor surface treatment unit is pivotally carried by the support for swinging movement relative thereto. The support is configured to raise and lower the unit relative to the floor surface, upon movement of the support relative to the vehicle, through a range of working positions in which the unit maintains a generally vertical orientation relative to the floor surface and is generally in contact therewith and a servicing position in which the unit is swung up relative to the vehicle above the floor surface to a position in which the unit is generally angled relative to the floor surface.

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West Fork, AR, United States of America

Kevin Blaine Mitchell