The Hoover Comapny

Other

Techtronic Floor Care Technology Limited

Healthy Gain Investments Limited

Edgar A Maurer

Darwin S Crouser

Richard A Wareham

Jeffrey S Louis

Evan A Gordon

Douglas C Barker

Vincent L Weber

Kurt D Harsh

Timothy T Hertrick

David W Moine

Adam C Sclafani

Michael A Durbin

Kenneth L Symensma

William H Theiss, Jr

Aaron P Tondra

Donald A Coates

David A Bradshaw

Douglass A King

Robert W Bauman

Charles R Morrow

Timothy B Hisrich

Jerry L Balzer

Wilbur J Kellum

Jackson William Wegelin

John D Essex

Kevin L Thomas

Jeffery A Morgan

Ronald J Stephens

Darwin T McKnight

William G Alford

Greg A Bilek

Charles A Lang

Gregg A McAllise

David B Rennecker

Donald B Tschudy

Raymond L Lawter

Daniel R Miller

Erik D Lesco

Herbert J Morello

Robert C Shorthill

Carl Behrend

David P Parks

Joseph W Clifford

David C Kumpf

Jack S Stayer, Jr

William J Chess, Sr

Michael J Reiter

James M Bednar

Michael W Crine

Roland J Knouff

Joseph A Garisto

A vacuum cleaner includes a floor engaging portion and a handle portion pivotally mounted to the floor engaging portion. The handle portion includes an input device. An agitator is rotatably mounted in the floor engaging portion to agitate a floor surface being cleaned. A first motor has an output shaft and an agitator belt selectively drivingly connecting the motor to the agitator. A tensioning arm pivotally mounts to the floor engaging portion for motion between an agitator-on position in which the tensioning arm engages the agitator belt, to place the agitator belt under tension whereby the agitator belt drives the agitator, and an agitator-off position in which the tensioning arm does not engage the agitator belt, to place the agitator belt in a slack condition whereby the agitator belt does not drive the agitator. A lifting assembly is mounted in the floor engaging portion and includes a second motor and an engaging member driven by the second motor, the engaging member being adapted to contact the tensioning arm to selectively place the tensioning arm in the agitator-off position.

Vacuum cleaner with electronic agitator control

A cleaning apparatus for cleaning a surface in which cleaning solution is dispensed to the surface and substantially simultaneously extracted along with the dirt on the surface in a continuous operation. The cleaning apparatus comprises a first source for distributing a first liquid onto said surface. An activating device operatively connected to the first source to activate the first source to distribute the first liquid onto the surface. A pump operatively connected to the first source to draw under pressure the first liquid to the surface. A second source for distributing a second liquid onto the surface, wherein the second liquid from the second source is drawn to the cleaning surface by gravity alone.

Liquid distribution system for a cleaning machine

A cleaner for cleaning a surface comprises a floor-engaging portion for moving along the surface. A magnet and a hall effect sensor located in the cleaner handle generates a control signal. The control signal is provided to a control circuit which controls one or more operational features of the cleaner. One such operational features includes at least one pump for mixing and distributing cleaning solution to the surface. In an alternate embodiment, the control circuit controls an electric motor for propelling the cleaner over the surface.

Control arrangement for a cleaning appliance

A cleaner for cleaning a surface comprises a floor-engaging portion for moving along the surface. A source supplies a liquid to a distributor, which distributes the liquid from the source on the surface wherein an activating device is operatively connected to the source to activate the source to supply liquid to the distributor to distribute liquid on the surface in response to a force moving the floor engaging portion in a first direction.

Apparatus and method for cleaning a surface

A removable dirt separation system for a vacuum cleaner is disclosed. The dirt separation system includes a dirt cup having a number of outer walls having a first portion defined by a filter assembly and a second portion with a first translucent panel to allow viewing material which accumulates within the dirt cup. The dirt cup further includes a top opening allow emptying of the dirt cup and an inlet in fluid communication with a suction nozzle of the vacuum cleaner. The dirt separation system further includes a lid for sealing the upper opening of the dirt cup. The dirt separation system yet further include a dirt duct for routing air which exits the filter assembly to an exit opening of the dirt separation system. A method of operating a removable dirt separation system for a vacuum cleaner is also disclosed.

Removable dirt separation system for a vacuum cleaner

A vacuum cleaner suction nozzle is provided with inner front and rear ducts and a duct cover piece disposed within the agitator chamber. This chamber is formed by a tunnel piece that is at least partly user observable from above the nozzle. The nozzle includes a hood piece which melds with its underbody at, at least, a portion of their juncture. This is occasioned by an offset in their underbody.

Vacuum cleaner suction nozzle configuration

Floor care apparatus is disclosed wherein a powered brush assembly having a multiplicity of rotary brushes is suspended within the apparatus such that the brush assembly floats freely upon the surface being cleaned without supporting any of the machine's weight. The rotary brushes are generally configured as spur gears and function in a gear train wherein one brush drives all other gear brushes in the system. Axially projecting brush bristles are embedded in each gear tooth such that there is no unbrushed area between adjacent brushes in the brush line. The portion of the gear tooth wherein the bristles are embedded includes a recessed profile to allow for circumferential expansion of the tooth, upon insertion of the brush bristles, thereby preventing gear tooth interference. The brush assembly is particularly suitable for hot water carpet extractors of the upright design.

Carpet extractor brush assembly

A portable compact extractor having permanent solution and recovery tanks integrally formed in a single main tank portion, with a removable power head attached to the top of the main tank. A fill port passes through the powerhead into the cleaning solution tank and a pour spout is formed in the recovery tank. With this construction, the cleaning solution tank may be filled with water and, if desired, detergent, by pouring the water and detergent into the fill port in the power head, and the recovery tank may be emptied as desired simply by tipping the unit and pouring the contents of the recovery tank out the pour spout and down the drain, without ever having to remove any tanks, bottles or the power head from the unit, or disconnect and reconnect any tubes. A carry handle is located on the powerhead to facilitate transportation of the unit, removal of the power head from the main tank for cleaning the tanks when desired, and to facilitate pouring the contents of the recovery tank out of the pour spout. A blower located in the powerhead provides suction in the recovery tank for suctioning liquid from a surface into the recovery tank and for driving a pneumatically driven pump for providing a source of pressurized cleaning solution for application to a surface to be cleaned.

Compact carpet and upholstery extractor

A vacuum cleaner suction nozzle is provided with inner front and rear ducts and a duct cover piece disposed within the agitator chamber. This chamber is formed by a tunnel piece that is at least partly user observable from above the nozzle. The nozzle includes a hood piece which melds with its underbody at, at least, a portion of their juncture. This is occasioned by an offset or undercut formed in one of the hood piece or underbody, whereby the hood piece and underbody join with coplaner outer surfaces.

An improved carpet extractor is provided having powered brushes for scrubbing cleaning solution on a floor surface and a floor nozzle for extracting soiled cleaning solution from the floor surface in a floor cleaning mode. The extractor may be converted from the floor cleaning mode to an above the floor cleaning mode for cleaning upholstery, stairs, spots on carpet, or the like, with an attached hand held wand having a cleaning solution applicator and an upholstery and stair cleaning nozzle. A pair of motors are provided, one for driving the floor scrubbing brushes when in the floor cleaning mode and one for driving a cleaning solution supply pump and providing pressurized cleaning solution to the wand in the above floor cleaning mode. An automatic conversion mechanism is provided for automatically energizing and de-energizing the motors depending upon the operative position of the handle portion of the extractor.

Carpet extractor with automatic conversion

A dirt conveying duct arrangement is formed between a nozzle and motor-fan of a vacuum cleaner and includes front and rear duct sections. The front duct section is open at the bottom thereof and covered by a removable bottom plate. The rear duct section is open at the top thereof and is covered by a removable top duct cover. The two-section dirt conveying duct arrangement allows clogs to be removed along the entire length thereof. The corner formed between the rear duct section and the motor-fan inlet may be molded with a radius to improve airflow into the motor-fan and limit losses in suction pressure.

Dirt conveying duct arrangement

A suction nozzle is provided with a linearly movable, stepped cam which adjusts the height of the suction nozzle by acting against a pivoted wheel carriage. The stepped cam is relatively fixedly positioned by an indexing means including a deflectable arm which is manually deformed to release the fixed indexing and then manipulated in a sideward direction to move the position of the stepped linear cam means.

Vacuum cleaner height adjustment

The herein disclosed invention relates to an improved carpet extractor having powered brushes for scrubbing a floor surface and which may be converted to an above the floor mode for upholstery cleaning or the like. A pair of air driven turbines are disclosed, one for driving the floor scrubbing brushes when in the floor cleaning mode and one for driving a cleaning solution supply pump when in the above floor cleaning mode. A unique linkage mechanism is taught whereby only one turbine or the other is energized depending upon the cleaning mode selected by the operator.

Carpet extractor

Growing community of inventors

Canton, OH, United States of America

Edgar A Maurer