Royal Appliance Mfg., Co.

Brett A Latimer

Mark Edward Cipolla

Paul Dana Stephens

Michael F Wright

Charles J Thur

Terry L Zahuranec

Robert A Salo

Craig M Saunders

Wallace D Tiller, Jr

Jeffrey M Kalman

Craig J Barbeck

Richard C Farone

Robert A Matousek

Craig Saunders

A vacuum cleaner includes a first housing defining a cyclonic airflow chamber and a second housing defining a main suction opening that is in communication with an inlet of the cyclonic chamber. A suction source has a suction airstream inlet in communication with an outlet of the cyclonic chamber, and establishes a suction airstream that enters the main suction opening, passes through the cyclonic chamber, and passes to an outlet of the suction source. Particulates entrained in the suction airstream are separated therefrom when said suction airstream moves in a cyclonic fashion through the cyclonic chamber. A main filter assembly is located in the cyclonic chamber so that a suction airstream moving from the main suction opening to the inlet of the suction source by way of the cyclonic airflow chamber passes through the filter medium thereof after the airstream moves in a cyclonic fashion within the cyclonic airflow chamber to remove residual particulates from the suction airstream before it leaves the cyclonic chamber.

Upright vacuum cleaner with cyclonic airflow

A vacuum cleaner includes a first housing defining a cyclonic airflow chamber and a second housing defining a main suction opening that is in communication with an inlet of the cyclonic chamber. A suction source has a suction airstream inlet in communication with an outlet of the cyclonic chamber, and establishes a suction airstream that enters said main suction opening, passes through said cyclonic chamber, and passes to an outlet of said suction source. A substantial portion of particulates entrained in the suction airstream are separated therefrom when said suction airstream moves in a cyclonic fashion through the cyclonic chamber. A main filter assembly, preferably including filter medium comprising polytetrafluoroethylene (PTFE), is located in the cyclonic chamber so that a suction airstream moving from the main suction opening to the inlet of said suction source by way of the cyclonic airflow chamber passes through the filter medium thereof after said airstream moves in a cyclonic fashion within the cyclonic airflow chamber to remove residual particulates from the suction airstream before it leaves the cyclonic chamber. A HEPA filter can be provided to filter the suction airstream exhausted through the outlet of the suction source prior to the airstream being discharged from the vacuum.

An upright vacuum cleaner (A) includes an upright housing section (B) and a nozzle section (C). A cyclonic airflow dirt and dust separating chamber () is defined in said upright housing section. A suction source (E) pulls air and entrained dirt, dust, and other contaminants through a main suction opening () formed in the underside () of the nozzle and into the cyclonic airflow chamber (). The cyclonic airflow chamber causes the suction airstream to travel in a cyclonic path such that the entrained contaminants are separated therefrom and deposited into a dirt container () that defines the lower portion of the chamber (). A main filter element () filters residual contaminants from the suction airstream between the chamber and the suction source. The main filter element is preferably made from high-density polyethylene porous filter media. A final filter assembly (F) filters the section airstream discharged by the suction source to ensure that the air discharged into the atmosphere is contaminant free, including those contaminants introduced into the airstream by the suction source itself.

A carpet extractor includes a solution distributor, such as a spray bar, which delivers cleaning solution to a floor surface. A housingselectively receives a recovery tankfor collecting dirty cleaning solution from the floor. A first tankfor concentrated cleaning fluid and a second tankfor clean water supply cleaning fluid and water to a reciprocating pumpthrough first and second fluid lines. The pump includes a piston, which reciprocates between first and second ends of a cylindrical bore. A fluid lineinterconnects the first and second fluid lines. As the pump reciprocates, a portion of the water is drawn into the interconnecting line during a downward stroke, where it mixes with the entering cleaning solution. As the pump moves on its upward stroke, the mixture is drawn back into the water line and is pushed onward by the pump toward the spray bar with each successive downward stroke.

Mixing pump for carpet extractor

A carpet extractor includes a base assembly including a housing which selectively receives a recovery tank for collecting dirty cleaning fluid. A nozzle assembly is mounted to the base housing and provides a fluid flowpath for dirty cleaning fluid from the floor surface to the recovery tank. The nozzle assembly is pivotable from a first position, in which the fluid flowpath communicates with the recovery tank, to a second position, in which the nozzle assembly is spaced from the recovery tank to allow the recovery tank to be removed from the base housing. A second flowpath is formed on the recovery tank between the tank and a nozzle plate . The flowpaths have openings , respectively, at their lower ends, which are located either side of two longitudinally spaced brushrolls . A flap valve selectively closes both flowpaths during above floor cleaning.

Carpet extractor with dual nozzles for dual brushrolls

Base unit for carpet extractor

A carpet extractor includes a base assembly including a housing which selectively receives a recovery tank for collecting dirty cleaning fluid. A first supply tank for concentrated cleaning fluid and a second supply tank for clean water are mounted on an inverted Y-shaped handle assembly . The handle assembly includes a central member with a hand grip at its upper end and two splayed leg members , which define a triangular shaped gap therebetween. The two tanks are removably mounted in the gap. The cleaning fluid tank is supported on a shelf , which spans the gap between the leg members. The water tank is pivotally mounted on two projections on the leg members to allow for easy removal and replacement on the handle. The arrangement of tanks in the gap allows for large capacity tanks, a well-balanced handle, ease of removal of the recovery tank without the need for removing either of the two supply tanks, and ease of refill of the supply tanks.

Tank mounting of carpet extractor

A carpet extractor includes a base assembly including a housing which selectively receives a recovery tank for collecting dirty cleaning fluid. A nozzle assembly is mounted to the base housing and provides a fluid flowpath for dirty cleaning fluid from the floor surface to the recovery tank. The nozzle assembly is pivotable from a first position, in which the fluid flowpath communicates with the recovery tank, to a second position, in which the nozzle assembly is spaced from the recovery tank to allow the recovery tank to be removed from the base housing. A second flowpath is formed on the recovery tank between the tank and a nozzle plate The flowpaths have openings respectively, at their lower ends, which are located either side of two longitudinally spaced brushrolls A flap valve selectively closes both flowpaths during above floor cleaning.

Recovery tank for carpet extractor

A carpet extractor includes a solution distributor, such as a spray bar 90, which delivers cleaning solution to a floor surface. A housing 10 selectively receives a recovery tank 22 for collecting dirty cleaning solution from the floor. A first tank 14 for concentrated cleaning fluid and a second tank 15 for clean water supply cleaning fluid and water to a reciprocating pump 420 through first and second fluid lines 412, 410. The pump includes a piston 428, which reciprocates between first and second ends of a cylindrical bore 430. A fluid line 432 interconnects the first and second fluid lines. As the pump reciprocates, a portion of the water is drawn into the interconnecting line during a downward stroke, where it mixes with the entering cleaning solution. As the pump moves on its upward stroke, the mixture is drawn back into the water line and is pushed onward by the pump toward the spray bar with each successive downward stroke.

Growing community of inventors

Mentor, OH, United States of America

Brett A Latimer