Patents Examined by Chris K. Moore
  • Patent number: 6145145
    Abstract: Apparatus for agitating a cleaning agent into a carpet comprises a housing within which a first and a second roller are each mounted for rotation in a first angular direction. A platen is mounted intermediate the rollers. A belt agitator comprising a fabric substrate having a pile surface is trained about the first and second rollers and extends under the platen. The rollers the platen support rectilinear movement of the belt agitator in the first direction to bring a portion of its surface sequentially from a first position within the housing to a contacting position in which the portion of the surface is in agitating contact with a carpet and, thereafter, to a second position within the housing.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: November 14, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Arlen Dale Besel
  • Patent number: 6141823
    Abstract: A blower nozzle (30) and a vacuum nozzle (40) extending in parallel with each other are connected to a main body (10) housing therein a fan (19) and a motor (20). The main body (10) is provided with a dust bag (50). In a vacuum mode, air is directly sucked from the vacuum nozzle and is introduced into the dust bag by the rotation of the fan. In a blower mode, the air similarly sucked from the vacuum nozzle is directed toward the blower nozzle.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: November 7, 2000
    Assignee: Ryobi Limited
    Inventors: Nobuaki Fujiwara, Naoki Kikuchi, Robert G. Everts
  • Patent number: 6141822
    Abstract: The invention concerns a vacuum cleaner including an internal structure with a motor (12a) driving an air sucking turbine (12) located in a downstream chamber (16) communicating with an upstream chamber (15) containing means (13, 26) for filtering the air sucked in through an air intake (24). The internal structure is enclosed in an inflatable peripheral structure (30) supplied with air through the air outlet (29) of the downstream chamber (16). The inflatable peripheral structure (30) is delimited by a flexible peripheral wall (32) whose envelope completely encloses the assembly of the vacuum cleaner internal structure. The invention is applicable to vacuum cleaners for household refuse, and provides at an inexpensive and efficient protection against collisions between the vacuum cleaner and surrounding objects.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: November 7, 2000
    Assignee: Certech SA, Societe Anonyme
    Inventors: Agneta Riviera-Boklund, Antonio Jimenez
  • Patent number: 6141824
    Abstract: A blower nozzle (30) and a vacuum nozzle (40) extending in parallel with each other are connected to a main body (10) housing therein a fan (19) and a motor (20). The main body (10) is provided with a dust bag (50). In a vacuum mode, air is directly sucked from the vacuum nozzle and is introduced into the dust bag by the rotation of the fan. In a blower mode, the air similarly sucked from the vacuum nozzle is directed toward the blower nozzle.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: November 7, 2000
    Assignees: Ryobi North America, Inc., Ryobi Limited
    Inventors: Nobuaki Fujiwara, Naoki Kikuchi, Robert G. Everts
  • Patent number: 6141810
    Abstract: A movable sediment and sludge removal and cleaning system which can be inserted into the access pipe of a storage tank, the apparatus including a chassis or platform, a pump connected to the chassis, two track assemblies connected to the chassis movable relative to the chassis in the same plane as the chassis, movable tracks connected to each track assembly to drive the apparatus over sediment and sludge, and a motor for driving the track assemblies and pump.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: November 7, 2000
    Inventors: Henry W. Allen, Daryl T. Brown, John A. Endres
  • Patent number: 6138322
    Abstract: A novel upright carpet cleaning extractor is disclosed which may be conveniently converted from the floor cleaning mode to the upholstery and/or stair cleaning mode. The overall configuration and operation of the extractor is similar to that of a typical upright vacuum cleaner and may be operated in the forward or reverse direction similar to a typical upright vacuum cleaner. When in the floor cleaning mode, cleaning solution is supplied to a solution distributor by gravity flow. However, when converted to the upholstery cleaning mode an auxiliary, air turbine driven cleaning solution pump is automatically energized for supplying pressurized cleaning solution to an upholstery or stair cleaning nozzle.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: October 31, 2000
    Assignee: The Hoover Company
    Inventors: Darwin S. Crouser, Gregg A. McAllise, Jeffery A. Morgan, Fred S. Sindlinger
  • Patent number: 6135129
    Abstract: The present invention provides air intake passage cleaning method and its apparatus for cleaning the air intake passage of intake and exhaust apparatus for conditioning the air in building, ship, aircraft, automobile, train, or other room, to be used in an intake and exhaust apparatus comprising a fleat exchanger, and at least one blow-out port for blowing out air conditioning air exchanged in heat by the heat exchanger, comprising supplying means for supplying a cleaning solvent, together with compressed air, to the heal exchanger side from a specific blow-out port through an air intake passage, and moving means for moving cleaning and wiping elements loaded in the air intake passage toward a specific blow-out port side, and hence relates to air intake passage cleaning method and its apparatus capable of securely cleaning and removing dirt deposits in the air intake passage and heat exchanger, and obtaining sanitary environments.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: October 24, 2000
    Inventor: Yasumasa Akazawa
  • Patent number: 6134744
    Abstract: A portable surface cleaning apparatus has a base for movement along a surface to be cleaned and an upright handle pivotally attached to a rearward portion of the base. A fluid dispensing nozzle for applying fluid to the surface and a suction nozzle for picking up fluid and debris from the surface are associated with the base. A clean water holding tank and a detergent holding tank are removably mounted to the handle while a recovery tank is removably mounted to the base. A mixing valve is fluidly connected between the holding tanks and the spray nozzle for changing the mixing ratio of the detergent with respect to the water. The fluid recovery tank includes an integrally molded conduit that extends from the suction nozzle and a mounting for an accessory hose that interrupts the fluid path from the suction nozzle in the conduit and redirects fluid flow through the hose.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: October 24, 2000
    Assignee: Bissell Homecare, Inc.
    Inventors: Timothy E. Kasen, Luke E. Kelly, Charles A. Reed, Jr., Gary L. Smith, Eric R. Metzger
  • Patent number: 6131240
    Abstract: A cleaning machine is disclosed having an adjustment apparatus that allows a selected cleaning depth to be maintained, even where the cleaning apparatus has been raised to facilitate transport of the cleaning machine from one area to be cleaned to another. The adjustment apparatus therefore eliminates the need to reset the cleaning depth where the carpet being cleaned is of the same depth as the last area that was cleaned. The disclosed cleaning machine also features a vacuum housing having an integral seal, which provides for a more reliable seal, and simplifies assembly of the housing.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: October 17, 2000
    Assignee: Windsor Industries, Inc.
    Inventors: Eric Shark, Gene Bothun, Clay Costanzo
  • Patent number: 6131239
    Abstract: Leaves and other loose debris on a ground surface can be removed and collected by a portable vacuum that includes a motor-operated fan located at the upper end of an upright passage structure that has a lower intake end proximate to the ground surface. The vacuum is supported by two ground wheels at the lower intake end of the passage structure, and a shoulder strap attached to an upper section of the passage structure. The vacuum includes a rotary debris cutter in a mid area of the passage structure, and a centrifugal particle separation located between the cutter and the motor-operated fan.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: October 17, 2000
    Inventor: Carl Lee White
  • Patent number: 6129097
    Abstract: A jewelry cleaning device is disclosed comprising a neck portion and a body portion each formed by a wall of fine, flexible mesh material which collectively define a hollow interior having an open top in the neck portion and a closed bottom in the body portion. A support located at the open top of the neck portion is effective to mount the device to the steam pipe of a steam cleaning device so that the nozzle at the end of the steam pipe extends into the hollow interior. The body portion is formed with an access opening fitted with a closure device which is movable between an open position to permit the insert of an item of jewelry within the hollow interior, and a closed position wherein the access opening is substantially closed against the tweezers or other gripping device used to hold the jewelry item during the steam cleaning operation.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: October 10, 2000
    Inventor: Edward C. Papandrea
  • Patent number: 6125498
    Abstract: A handheld liquid extraction cleaner includes a recovery tank mounted to the forward end of a cleaner housing with a suction nozzle and conduit on a front face of the recovery tank connected to an inlet opening in the recovery tank. A vacuum source is connected to the recovery tank through an exhaust conduit, integrally formed in the recovery tank, for drawing liquid and debris through the suction nozzle and the suction conduit and into the recovery tank A removable cleaning fluid supply tank is mounted to a rear portion of the cleaner housing, an adjustable spray nozzle is mounted to the suction conduit and a pump is positioned in a supply conduit between the spray nozzle and the cleaning fluid supply tank for supplying pressurized cleaning fluid from the cleaning fluid supply tank to the spray nozzle The pump includes an impeller which is positioned in an outlet opening of a reservoir in which the cleaning fluid is deposited from the cleaning fluid supply tank.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: October 3, 2000
    Assignee: Bissell Homecare, Inc.
    Inventors: Kenneth L. Roberts, Diane M. Simek, Jeffrey A. Hall, Eric C. Huffman, Charles A. Reed, Jr., Steven K. Meek, Lau Wai Keung, Ng Tat Shing
  • Patent number: 6125502
    Abstract: A suction pipe for a suction cleaner comprising an elongated pipe having at its lower end, in the in-use position, a coupling stud for a suction mouthpiece, and opposite this end, a flexible suction hose facing to one side relative to the elongated pipe, and wherein the suction pipe further has an upper operating handle arranged above the flexible suction hose in the in-use position. The upper operating handle in the in-use position of the suction pipe is arranged at a distance above the flexible suction hose that exceeds the length of the forearm of the operator, and the upper operating handle is so arranged that it allows it to be seized from that side of the suction pipe on which the flexible suction hose is arranged.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: October 3, 2000
    Assignee: Nilfisk A/S
    Inventors: Nils Preben Hammeken, Benny Matthiassen
  • Patent number: 6125499
    Abstract: A lightweight portable steam carpet cleaning machine comprised of two main structures, a handle assembly and the recovery tank. Connected to the machine are two hoses, the supply hose which supplies clear water to the machine and the discharge hose which takes dirty water away depositing it in a sanitary disposal. A capacity spray jet is used to apply a high volume of clear water to the carpet. A recovery tank which is less than a cubic foot in volume is used to transport the vacuum from the vacuum motor to the water pick-up. During the cleaning process, a channel is used to direct extracted water to the bottom of the recovery tank. A float switch is used to automatically activate or deactivate the discharge pump during the cleaning process.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: October 3, 2000
    Inventor: Mike Downey
  • Patent number: 6125503
    Abstract: A device for promoting safe, comfortable, economical, and timely use of all currently manufactured, new in stock and used backpack blowers, by using this retracting rotational backpack blower air discharge tube unit (1) that utilizes one section of blower air discharge tubing, wherein the retracting rotational backpack blower tube unit (1) being larger in inside dimension than the outside dimension of a modified backpack blower straight tube, while the retracting rotational backpack blower tube unit (1), will retract in effect over a modified backpack blower straight tube when the upper longitude end of said is attached to a backpack blower discharge air flex tube, as to become a ridged fixed means, thus allowing the retracting rotational backpack blower tube unit (1), to retract and extend by longitudinal means over a modified backpack blower straight tube as to the full length of said when controlled by the hand of the operator while a modified backpack blower straight tube becomes a ridged fixing axis poin
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: October 3, 2000
    Assignee: Az-Tech Research and Development Corporation
    Inventor: Michael D Callahan
  • Patent number: 6125500
    Abstract: A new Combination Broom and Vacuum Cleaner Assembly for easy pickup of dirt piles. The inventive device includes an upper handle, a lower handle, a broom portion, a means for creating suction, a vacuum manifold, and an attachment head. In use, the Combination Broom and Vacuum Cleaner Assembly is used to sweep up dirt and the like using the broom portion. After gathering the debris up into a pile, the vacuum manifold is lowered and used to pickup the pile easily and swiftly. After picking up the pile of debris, the vacuum manifold is again raised to enable sweeping once again.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: October 3, 2000
    Inventor: Niels Kat
  • Patent number: 6122796
    Abstract: A suction cleaner comprises a primary cleaner (1) and an auxiliary cleaner (2). The primary cleaner 1 includes a fan (11) for sucking in air, and an air channel (6,7,9) disposed upstream of the fan for directing sucked air through the primary cleaner. The auxiliary cleaner (2) includes a dust collection chamber (20) and is attachable to the primary cleaner (1) with the dust collection chamber connected to the air channel (6,7,9) such that, in use, dust within the dust collection chamber is drawn into the air channel for collection.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: September 26, 2000
    Assignee: Electrolux Household Appliances Limited
    Inventors: David Downham, John Michael Ord, Thomas Jankevics, Goran Sjoberg
  • Patent number: 6122798
    Abstract: A dust suction head for use in an electric vacuum cleaner, having an air suction port at the bottom of the head. The head has a brush chamber which accommodates therein a freely rotatable brush having blades that extend along the shaft of the rotational brush. The head additionally has an opening and an air passage connected with the opening for taking in and leading fresh air into the vacuum chamber of the cleaner through the brush chamber such that the fresh air passing through the brush chamber impinges on the blades to accelerate the rotational motion of the blades. Thus, the head can obtain a necessary amount of air to rotate the brush at all times, especially when it is brushing a carpet, and maintain its smooth motion on the floor while dusting it.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: September 26, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Toshinari Kobayashi, Kenji Aida, Kazuo Saito, Akihiko Zako, Sadaki Kodera, Keiichi Sato, Toshiyuki Fujiyoshi, Yoshihiro Mori
  • Patent number: 6115880
    Abstract: A floor cleaner comprising a base and a filter bag housing, the filter bag housing having a bag cavity which has an undulated inner wall for receiving a filter bag, the undulated wall having a plurality of elongated protrusions and adjacent intermediate elongated air flow recesses. A smooth outer wall is spaced from the inner wall.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: September 12, 2000
    Assignee: Castex Incorporated
    Inventors: Richard F. Wulff, Daniel G. Giddings
  • Patent number: 6112366
    Abstract: A vacuum cleaner has an electric motor driving an air impeller for creating suction and a pump which draws liquid material through an inlet tube from the bottom of a tank and expels it from the tank. A priming mechanism is disposed in fluid communication with the outlet portion of the pump. The priming mechanism primes the pump from the outlet side of the pump by collecting liquid received by the tank of the vacuum cleaner in the priming mechanism and establishing a pressure differential across this collected liquid.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: September 5, 2000
    Assignee: Shop Vac Corporation
    Inventor: Robert C. Berfield