Patents Assigned to Nilfisk Advance A/S
  • Patent number: 9339160
    Abstract: The present invention relates to a silencer system for a vacuum motor in a suction cleaner, which may be constructed using only one or two parts to form a housing for the vacuum motor including the silencer system. The system may have a main fan silencer system for the main fan and a second motor cooling silencer system for the motor cooling fan. The main fan is encapsulated in a housing surrounded by a substantially circular first wall part in such a way that a first cavity is formed between the housing and the first wall part. The system further includes two ducts, each duct connected at one end with a serpentine shaped exhaust air duct and at the other end with a second cavity connected with the first cavity by an opening in the first wall part.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: May 17, 2016
    Assignee: Nilfisk Advance A/S
    Inventors: Joakim Petersen, Peter Nøhr Larsen
  • Publication number: 20150129353
    Abstract: The present invention relates to a silencer system for a vacuum motor in a suction cleaner, which may be constructed using only one or two parts to form a housing for the vacuum motor including the silencer system. The system may have a main fan silencer system for the main fan and a second motor cooling silencer system for the motor cooling fan. The main fan is encapsulated in a housing surrounded by a substantially circular first wall part in such a way that a first cavity is formed between the housing and the first wall part. The system further includes two ducts, each duct connected at one end with a serpentine shaped exhaust air duct and at the other end with a second cavity connected with the first cavity by an opening in the first wall part.
    Type: Application
    Filed: July 4, 2012
    Publication date: May 14, 2015
    Applicant: Nilfisk-Advance A/S
    Inventors: Joakim Petersen, Peter Nøhr Larsen
  • Patent number: 9000715
    Abstract: A system has a primary unit (1) and a number of secondary units (16), which may be stored in receiving slots in the primary cleaning unit (1) or be coupled to the primary unit. The primary and secondary units are configured as movable cleaning or grounds maintenance units capable of performing at least one cleaning or grounds maintenance operation. The primary unit (1) is powered by a power source (2), which also powers the secondary unit (16) or charges a power source (17) in the secondary unit (16). Each unit has a communications module (13, 25) capable of communicating with each other and/or a remote location. At least one of the units (1, 16) may include one or more proximity or near-field sensors and/or one or more sensor for sensing the performance of the unit (1, 16).
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: April 7, 2015
    Assignee: Nilfisk-Advance A/S
    Inventors: Peter Nøhr Larsen, Michael Gamtofte, Anton Sørensen
  • Patent number: 8966699
    Abstract: A floor washing-drying machine including a scraping device that is capable of automatic orientation. The scraping device follows changes of direction of the machine by a simple and effective orienting mechanism so as to wipe all the surface washed by a washing mechanism, without leaving any wet portions on the surface. An idle mode mechanism is achieved by a bushing to which the scraping device is connected. The bushing is mounted in an idle and axially slidable mode on the brush rotation shaft.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: March 3, 2015
    Assignee: Nilfisk-Advance A/S
    Inventor: Leonardo Contardi
  • Patent number: 8961633
    Abstract: The invention relates to filter cleaning in a vacuum having a switchable flap element, the cleaning of the filter or of parts of the filter being carried out by supplying a secondary air flow to the interior of the filter to be cleaned, and air being able to flow through the filters separately from each other from the outside to the inside in the vacuum container in a sealed manner, and a flap element disposed in a chamber housing being pivotable, by means of the pivoting of which openings may be closed and released, the secondary air flow reaching the surface of the filter to be cleaned from the inside toward the outside in pulses, characterized in that the flap element comprises at least two partial flaps, the pivoting of which is actuated by a pivot drive, the respective partial flap optionally closes the outflow opening of the respective filter chamber in the direction of the intake opening of the suction turbine, the blow-out side of the suction turbine delivers the created overpressure air into an overp
    Type: Grant
    Filed: September 5, 2009
    Date of Patent: February 24, 2015
    Assignee: Nilfisk-Advance A/S
    Inventors: Martin Kienzle, Günther Werbach, Rainer Hafenrichter, Klaus Dietz
  • Publication number: 20140210265
    Abstract: A method and a system for controlling the charging and discharging of one or more battery packs (8) connected to a power source (7) or an apparatus (9) driven by the battery packs. The battery pack (8) comprises a number of battery cells connected to two or more terminals for establishing an electrical connection with the power source or the apparatus. The electronic system (2) for controlling the charging of the battery pack (8) and the electronic system (6) for controlling the operation of the apparatus (9) are integrated into the battery pack (8). The battery pack (8) comprises a communications interface for communicating with other battery packs (8) and generates a charging and discharging pool, where the most effective battery pack (8) to charge or discharge is charged and discharged first.
    Type: Application
    Filed: September 26, 2012
    Publication date: July 31, 2014
    Applicant: Nilfisk-Advance A/S
    Inventor: Jan Thorsøe
  • Patent number: 8584308
    Abstract: A portable vacuum cleaning system includes a portable vacuum unit for cleaning debris. The vacuum unit is powered by a self-contained first electric power storage device and may be carried with a strap in backpack-fashion. The system also includes a cart defining a receptacle for receiving the vacuum unit. The vacuum unit may be used when supported by the cart or when carried by an operator. A second electric power storage device is supported by the cart and electrically connectable to the vacuum unit for charging the first electric power storage device when the vacuum unit is supported by the cart. Further, when disposed in the cart, the vacuum unit is disposed at an angle of about 45 degrees allowing for ease of movement of the cart.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: November 19, 2013
    Assignee: Nilfisk-Advance A/S
    Inventors: Susan J. Williamson, Glen E. Moore, David W Wood
  • Patent number: 8549702
    Abstract: The present invention refers to a floor washing-drying machine, in particular of the drives-on-board kind, provided with at least a front driving and steering wheel (3), a pair of rear wheels (5), a brush-carrying head (4) positioned between the front driving wheel and the supporting axle of the rear wheels, and a wiping and vacuuming device (6) arranged behind the rear wheels. The brush-carrying head (4) is connected with the machine frame through a support and steering system of four-arm linkage type (X,Y,J,W; 17,19) which is driven by a gear steering device (11,12,14,15). The technical solution allows to solve efficiently the problem of collecting washing liquid and to dampen impacts of the machine against obstacles which it may encounter along its path.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: October 8, 2013
    Assignee: Nilfisk-Advance A/S
    Inventors: Andrea Chignoli, Andrea Odoli
  • Patent number: 8490737
    Abstract: A vehicle which includes an accelerometer to detect its lateral acceleration while in operation, a motor, and an input device activated by the operator of the vehicle and suitable to actuate in a controllable mode the mechanical power delivered by the motor so as to adjust the speed of the vehicle. Further, there is a processor including algorithms to compare the lateral acceleration signal detected by the accelerometer with a preset value corresponding to a preset lateral acceleration.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: July 23, 2013
    Assignee: Nilfisk-Advance A/S
    Inventor: Paolo Valcarenghi
  • Publication number: 20130160225
    Abstract: A floor washing-drying machine including a scraping device that is capable of automatic orientation. The scraping device follows changes of direction of the machine by a simple and effective orienting mechanism so as to wipe all the surface washed by a washing mechanism, without leaving any wet portions on the surface. An idle mode mechanism is achieved by a bushing to which the scraping device is connected. The bushing is mounted in an idle and axially slidable mode on the brush rotation shaft.
    Type: Application
    Filed: October 5, 2011
    Publication date: June 27, 2013
    Applicant: Nilfisk-Advance A/S
    Inventor: Leonardo Contardi
  • Patent number: 8181833
    Abstract: A harness (10) for a backpack vacuum cleaner (100) includes a back plate (20) mounted to a vacuum cleaner body (102). The back plate (20) includes an intermediate portion (22) and two flexible sections (24) on opposite sides of the intermediate portion (22). A waist strap (90) is fixed to the back plate (20) between the flexible sections (24). The flexible sections (24) are flexible to respectively pivot about two spaced vertical pivot axes (72). Upper ends (82) of two shoulder straps (80) are attached to a mounting plate (50) slideably mounted to the back plate (20), and lower ends (84) of the shoulder straps (80) are attached to the flexible sections (24). Relative positions between the upper and lower ends (82 and 84) of the shoulder straps (80) can be adjusted by moving the mounting plate (50). When a user moves his or her shoulders, the connection points (32) of the flexible sections (24) flex to respectively pivot about the pivot axes (72).
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: May 22, 2012
    Assignee: Nilfisk-Advance A/S
    Inventors: Percy Wangeby, Andreas Jarl
  • Publication number: 20110289716
    Abstract: A portable vacuum cleaning system includes a portable vacuum unit for cleaning debris. The vacuum unit is powered by a self-contained first electric power storage device and may be carried with a strap in backpack-fashion. The system also includes a cart defining a receptacle for receiving the vacuum unit. The vacuum unit may be used when supported by the cart or when carried by an operator. A second electric power storage device is supported by the cart and electrically connectable to the vacuum unit for charging the first electric power storage device when the vacuum unit is supported by the cart. Further, when disposed in the cart, the vacuum unit is disposed at an angle of about 45 degrees allowing for ease of movement of the cart.
    Type: Application
    Filed: May 31, 2011
    Publication date: December 1, 2011
    Applicant: Nilfisk-Advance A/S
    Inventors: Susan J. Williamson, Glen E. Moore, David W. Wood
  • Patent number: 8011063
    Abstract: An overload clutch (10) for a rotating agitation member (11) for a surface cleaning machine includes a clutch member (12) connected to the agitation member (11) to rotate therewith, a coupling member (20) rotatable relative to the clutch member (12), and a torque lever (40) having an end pivotally mounted to the coupling member (12). The other end of the torque lever (40) is biased to engage with the clutch member (12) such that the agitation member (11) is rotated together with the coupling member (20) when a torque load from the agitation member (11) is not greater than a preset level. The torque lever (40) pivots outward away from the clutch member (12) and disengages from the clutch member (12) to disconnect the torque lever (40) from the clutch member (12) when the torque load from the agitation member (11) is greater than the preset level.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: September 6, 2011
    Assignee: Nilfisk-Advance A/S
    Inventor: Hakan Sandberg
  • Patent number: 7987550
    Abstract: In order to measure the degree of filling of a dust collector (5), where the dust (15, 16) collected in the dust collector may be of a very varied composition ranging from very fine dust (15) to rather large particles (16), a high pressure difference and a low pressure difference are measured by two differential pressure meters (11, 12), where the one differential pressure meter (12) measures the pressure difference between the compartment (4) of the dust collector, in which the dust collector (5) is arranged, and a measurement position at the connecting stub (6) of the vacuum cleaner, as is known, while the other differential pressure meter (11) measures between two measurement positions inside the connecting stub (6).
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: August 2, 2011
    Assignee: Nilfisk-Advance A/S
    Inventor: Anders Hedelund Nielsen
  • Patent number: 7337876
    Abstract: A suction apparatus is provided with noise reduction means in one or more airflow passages for reducing noise emission from an airflow generator or the like, wherein at least one airflow passage is provided with at least one indentation with a predetermined depth extending substantially perpendicularly to the general direction of the noise in the passage.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: March 4, 2008
    Assignee: Nilfisk-Advance A/S
    Inventor: Peter Nøhr Larsen
  • Patent number: 6857162
    Abstract: The present invention relates to a cleaning and/or treatment device for cleaning and/or treating surfaces such as floors, pavements and carpets. The invention particularly relates to a cleaning and/or treatment device using cleaning/treatment solution, wherein the solution is recirculated and thereby used more than one time. The cleaning device comprises a filter unit for cleaning dirt from a dirty solution tank and means for recirculating said cleaned solution to a clean solution tank, wherein said filter unit comprise at least one cross-flow filter, said cross-flow filter preferably being a membrane filter. The invention also relates to a process of cleaning and/or treating surfaces using such a device.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: February 22, 2005
    Assignee: Nilfisk Advance A/S
    Inventor: Erik Rasmussen
  • Patent number: 6757935
    Abstract: In a vacuum cleaner with a motor suction assembly (8) comprising a motor part and a suction part (6) providing a carrier air stream and a cooling air stream, respectively, the motor suction assembly (8) is built into a cover (7, 12, 13) with a cylindrical cavity (23). The cover (7, 12, 13) separates the carrier air stream from the cooling air stream, said cover thus being sealed (14) against the motor suction assembly (8) in such a way that the carrier air stream cannot be affected by the cooling air stream and vice versa. Furthermore, the motor suction assembly (8) is surrounded and protected by the cover (12, 13). In this way, a construction is provided using only one cover, eliminating the need to position two covers, one of which solely serves to separate the air streams, while the other cover, together with the first one, provide a compartment for receiving the motor suction assembly (8). Thus, in other words, two covers are replaced by a universal cover (12, 13).
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: July 6, 2004
    Assignee: Nilfisk Advance A/S
    Inventor: Jan Sjoberg
  • Patent number: D720900
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: January 6, 2015
    Assignee: Nilfisk-Advance A/S
    Inventors: Richard Hickmott, Alistair David Morton