Tennant Company

Tennant

Archie A Weidner

Michael Steward Wilmo

Michael L Blehert

Gregory J Engel

Richard A Mason

Thomas Peter Mathews

Michael H Lenzmeier

A street sweeper system is used typically in a motorized vehicle. The sweeper utilizes a cylindrical brush rotating about an axis that is typically perpendicular to the vehicle's direction of motion. A conveyor belt catches debris thrown forwards and upward by the brush and moves the debris to a hopper. A conveyor lip is mounted on a lower edge of the conveyor to improve sweeping performance. The conveyor lip covers a space between the lower edge of the conveyor and the ground. The lip's lower edge is angled towards the brush to deflect debris back towards the brush to recirculate the debris.

Conveyor lip for motorized street sweeper

A street sweeper system is used typically in a motorized vehicle. The sweeper utilizes a cylindrical brush rotating about an axis generally perpendicular to the vehicle's direction of motion. A conveyor belt catches debris thrown forwards and upward by the brush and moves the debris to a hopper. A cutoff flap is mounted contacting a front portion of the brush. The cutoff flap deflects debris that moves upwards along a front portion of the brush back downwards to be recollected at the conveyor.

Street sweeper main broom cutoff flap

This is concerned with an improved sweeping head and sweeping machine for sweeping carpet in one pass with an articulated sweeping head having an improved sweeping action and a substantial power savings.

Method of removing debris and dust from a carpet

This invention is concerned with a machine and/or system as well as a method of operation and an assembly whereby a sweeping unit may be quickly converted into a scrubbing unit and vice versa. The system is capable of operation either in a sweeping mode or a scrubbing mode and is also adaptable to include a vacuum wand assembly when the unit is to be operated in its sweeping mode.

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Minnetonka, MN, United States of America

Archie A Weidner