WO2002094078A1 - Suspension pour appareil d'entretien de surfaces - Google Patents

Suspension pour appareil d'entretien de surfaces Download PDF

Info

Publication number
WO2002094078A1
WO2002094078A1 PCT/US2002/016249 US0216249W WO02094078A1 WO 2002094078 A1 WO2002094078 A1 WO 2002094078A1 US 0216249 W US0216249 W US 0216249W WO 02094078 A1 WO02094078 A1 WO 02094078A1
Authority
WO
WIPO (PCT)
Prior art keywords
surface maintenance
spring
spring assembly
machine
coupled
Prior art date
Application number
PCT/US2002/016249
Other languages
English (en)
Inventor
Kevin L. Shinler
Original Assignee
Tennant Compagny
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tennant Compagny filed Critical Tennant Compagny
Publication of WO2002094078A1 publication Critical patent/WO2002094078A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A47L11/282—Floor-scrubbing machines, motor-driven having rotary tools
    • A47L11/283—Floor-scrubbing machines, motor-driven having rotary tools the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/10—Floor surfacing or polishing machines motor-driven
    • A47L11/14—Floor surfacing or polishing machines motor-driven with rotating tools
    • A47L11/16—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4011—Regulation of the cleaning machine by electric means; Control systems and remote control systems therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
    • A47L11/4058—Movement of the tools or the like perpendicular to the cleaning surface for adjusting the height of the tool

Definitions

  • the present invention relates generally to surface maintenance or conditioning machines, and particularly those machines employing one or more surface maintenance or conditioning appliances or tools that perform one or more tasks including, among others, scrubbing, sweeping, and polishing or burnishing.
  • the more specifically, the present invention is particularly directed to a suspension system for a surface maintenance appliance, and specifically a burnishing assembly.
  • Surface maintenance machines that perform a single surface maintenance or surface conditioning task are, of course, well known. Surface maintenance machines are generally directed to applications such as floor surfaces, or simply floors.
  • the term floor refers to any support surface, such as, among others, floors, pavements, road surfaces, ship decks, and the like.
  • floor or surface maintenance machines are constructed having a single surface conditioning appliance or system so as to only sweep, others to scrub, while still others only to polish or burnish. It is of course possible to construct a single surface maintenance machine to perform one or more of the aforementioned surface maintenance tasks.
  • a multi-task floor conditioning machine is disclosed in a PCT application having publication WO 00/74549, published 14 Dec. 2000, entitled, "Floor Cleaning Machine,” by inventors Thomas, et al, the entire disclosure of which is incorporated by reference herein in its entirety for any and all purposes.
  • the machine disclosed therein performs the task of sweeping, scrubbing, and burnishing, and includes a squeegee assembly in combination with a vacuum system for removing cleaning solution from a floor subsequent to a cleaning and scrubbing operation.
  • WO 00/74549 thereshown is a single unitary walk-behind machine that is transportable across a floor. Successively attached to the machine, from front to back, are independent floor maintenance systems. At the forward section of the machine is a sweeping system. At the rearward section of the machine — machine steering control - is a burnishing system. In between the sweeping system and the burnishing system is a scrubbing system including forward scrubbing brushes coupled to a cleaning solution dispensing system and rearward following squeegees coupled to a liquid vacuum system for recovering expended cleaning solution.
  • Burnishing systems generally include a scheme for controlling the degree of burnishing applied to a floor surface depending upon the type of floor surface intended to be burnished.
  • Burnishing systems well known in the art commonly include a driver assembly which includes a working appliance or tool such as a pad or brush affixed to a driver that is rotatably driven by a driver motor.
  • the driver assembly of the burnishing systems of the prior art have been selectively raised and lowered by an actuator so as to achieve an intended force or pressure against a floor surface intended to be polished or burnished.
  • Scrubbing systems are analogous to burnishing systems, and are also well known in the art. Scrubbing systems commonly include a driver assembly including rotatable scrubber in the form of a brush, pad, or the like, and a scheme for controlling the degree of scrubbing applied to a floor surface depending upon the type of floor surface intended to be scrubbed. Too much scrubbing of course may deleteriously affect the floor surface requiring further maintenance.
  • the scrabber driver assemblies for scrubbing systems like burnishing systems, are of course well known in the art and commonly include one or more rotatable brushes driven by a driver motor affixed to a scrubber head.
  • Scrubber heads of the prior art have been selectively raised and lowered by an actuator coupled to the driver so as to achieve an intended force or pressure of the brush against a floor surface intended to be scrubbed. Examples of the latter are taught in U.S. Patents 4,757,566; 4,769,271; 5,481,776; 5,615,437; 5,943,724; and 6,163,915, the entire disclosures of which are incorporated by reference herein in its entirety for any and all purposes.
  • Sweeper systems are also analogous to burnishing systems.
  • Sweeper systems commonly include a rotatable sweeper system brush driven by a driver motor.
  • the sweeper system brush may be lowered and raised relative to a floor, which may more or less affect the floor surface.
  • floor conditioning machines are powered by a rechargeable battery supply.
  • the battery voltage applied to the various floor conditioning systems or appliances, and particularly to the driver motor will decay in relation to the energy discharged by the battery and the total time of discharge.
  • the mechanical burnishing power delivered to the floor is therefore dependent upon the voltage and current delivered to the driver motor.
  • Burnishing appliances or systems on such floor maintenance machines have several factors that place design demands on the suspension system from the floor maintenance machine that are suspended. This is so since commonly the burnishing pad is somewhat surrounded in part by peripheral portion of the driver and is surrounded by an attached skirt extending from peripheral portions of the driver - the skirt preventing dust and debris from being injected into the environment.
  • a vacuum is established within the chamber formed by the burnishing system driver and skirt. This in turn causes a vacuum which tends to pull the burnishing assembly toward the floor. This vacuum may be controlled by way of providing breather vents or ports in the skirt.
  • An object of the present invention is to provide a suspension system for a floor maintenance appliance suspended from a frame associated with a floor maintenance machine.
  • An object of the present invention is to provide a suspension system for burnishing appliance or assembly suspended from a frame associated with a floor maintenance machine.
  • a variable load suspension system for varying the work force of a surface maintenance appliance upon a surface intended to be affected, hi one exemplary embodiment, a series combination of an actuator and a spring assembly is coupled to a frame at one end, and the other end thereof is coupled to the surface maintenance appliance by way of an appropriate linkage.
  • the spring assembly and specifically the spring, generally extends in the direction of transport of the surface maintenance machine 10, and the actuator causes motion transverse to the surface intended to be affected.
  • the actuator and driver motor of the surface maintenance appliance are intended to be controlled by any of the aforementioned control systems known in the art as well as others without departing from the true spirit and scope of the present invention.
  • Figure 1 is a side view of a walk behind surface maintenance machine employing a suspension system in accordance with the present invention for suspending a burnishing system.
  • FIG. 2 is a partial perspective view of the suspension system assembly in accordance with the present invention.
  • Figure 3 is a side view showing further details of the suspension system assembly illustrated in Figure 2.
  • Figure 4 is top plan view illustrating suspension system components in accordance with the present invention.
  • Figure 5 is a schematic block diagram of an exemplary embodiment of a control system for a floor maintenance appliance for controlling the work output delivered to a floor surface.
  • FIG. 1 Illustrated in Figure 1 is walk behind surface conditioning machine 10 in accordance with the present invention.
  • a burnishing assembly generally indicated by numeral 100 is suspended from a frame 20 by way of a suspension system assembly in accordance with the present invention generally indicated by numeral 200, and particularly illustrated in Figure 2 as will be described in further detail herein.
  • Figure 1 graphically depicts the available range of motion of the burnishing head or assembly 100 when coupled to the frame in accordance with the present invention. Namely, a transport position 101, lowered operating position 102, and pad changing position 103.
  • FIG 2 Illustrated in Figure 2 is a perspective view of the suspension system 200 in accordance with the present invention.
  • Burnishing assembly 100 has been omitted.
  • Suspension system 200 includes an actuator 220 pivotally coupled to frame 20 through coupling member 224, and having an actuator rod 222 pivotally coupled to a spring assembly 400 (not shown in Figure 2, shown in Figure 4).
  • Spring assembly 400 is coupled to a 4-point or four parallel bar linkage system 215 through coupling brackets 250L and 250R.
  • a pair of mounting bracket 210L and 21 OR is intended to be rigidly attached to the burnishing assembly driver member 110 upon which a driver motor is generally mounted.
  • Burnishing assembly 100 is coupled to frame 20 by way of the 4-point or 4-bar linkage 215 including bars 230L, 230R, 240L, and 240R. Ends 232L, 232R, 242L, and 242R are pivotally coupled to frame 20 (not shown) by way rotatable mounted pins, bolts, or the like mounted through apertures 234L, 234R, 244L, and 244R, respectively.
  • the four point linkage system is of course well known for generally lifting and lowering an assembly with generally transverse movement relative to the ground plane upon which the assembly may rest. In other words, permits vertical movement while fixed in a lateral position relative to a reference frame, namely the frame 20 of the surface maintenance machine 10.
  • Suspension coupling bracket 250L has a first end 252L rigidly secured to bar 240L by way mounting bolts 253, welding, or the like. The other end of bracket 250L is pivotally coupled to one end of spring assembly 400 as will subsequently be described in detail below.
  • bracket 250R has a first end 252R rigidly secured to bar 240R by way mounting bolts 253 (not shown) or the like. The other end of bracket 250R is also pivotally coupled to one end 410 of spring assembly 400, and is substantially identical to suspension coupling bracket 250L but is substantially hidden from view in the figures.
  • Spring assembly 400 is further described in Figure 4.
  • spring assembly is essentially a preloaded draw spring well known in the art having a helical spring housing 420 enclosing, in part, helical spring 410 with rod 430 passing therethrough.
  • One end 423 of housing 420 is pivotally coupled to actuator rod 222.
  • the opposite end of rod 430 is affixed to pin assembly member 440 by way of a threaded bolt 443, or the like.
  • One end of spring 410 is coupled to an anti-rotation plate 445 having extending tabs 447 protruding through slots 446 of housing 420.
  • the other end of spring 410 engages housing end member 441 of housing 420 through which rod 430 passes therethrough.
  • Pin assembly member 440 includes a pair of pins or rod shape members 43 IL and 43 IR intended to be pivotally coupled to suspension coupling bracket end members 253L and 253R of suspension coupling brackets 250L and 250R, respectively.
  • rod shaped members 431 pass through, in part, arcuate slots 255L (255R not shown). These slots may be omitted as their function provides for obtaining the appliance assembly position identified as numeral 103 in Figure 1 while maintaining pivotal coupling.
  • suspension coupling brackets 250L and 250R are somewhat "s-shaped" so as to permit unobstructed movement of the 4-point suspension system, while at the same time permit 4-point suspension system to be affected, in part, by the combination spring assembly 400 and actuator 220.
  • Actuator 220 includes a mounting member 224 for pivotally coupling actuator 220 to frame 20. Similarly end member 223 of actuator rod 222 is pivotally coupled to housing end member 423 by way of any suitable pivotal coupling, for example a travis pin assembly or the like as indicated by numeral 425.
  • draw spring assembly may have a free length spring of 29 inches, an installed length of 15 inches (compressed spring) with a 20 lbs.-inch rate of spring force. It is of course should be understood by those skilled in the art that the size of draw spring assembly 400 may be embodied by way of a wide array of physical sizes depending upon the weight of the burnishing assembly, and the available room and cost considerations associated with the surface maintenance machine 10.
  • the burnishing assembly in the actuator retracted position, is the machine transport position indicated by numeral 101 in Figure 1 and the assembly is away from the floor surface.
  • the actuator In the "operate position," the actuator is extended a predetermined amount until the burnishing head makes contact with the floor surface while under the influence of the draw spring assembly 400.
  • the actuator 220 and burnishing head driver 110 motor may be controlled to achieve regulated work force upon the surface intended to be affected.
  • Actuator 220 is selectively controlled during operation to adjust the degree of spring compression, and hence the degree of spring force transferred by spring assembly 400 to burnishing assembly 100.
  • Actuator 220 may be a hydraulic actuator (not shown) or other known actuation device appreciated by those skilled in the relevant arts.
  • the present invention provides a horizontal packaging technique for achieving variable spring load in the vertical direction of a surface maintenance assembly or appliance, for example burnishing, scrubbing, waxing assemblies, and the like.
  • a variable load suspension system has been disclosed for varying the work force of a surface maintenance appliance upon a surface.
  • a series combination of an actuator and a spring assembly is coupled to a frame at one end, and the other end thereof is coupled to the surface maintenance appliance by way of an appropriate linkage.
  • the spring assembly 400 generally extends in the direction of transport of the surface maintenance machine 10 (generally parallel with the surface), and the actuator causes motion transverse to the surface intended to be affected.
  • brackets 210L and 21 OR are provided with arcuate slots 577 whereby pins coupling bar members 230L and 230R may be lifted upward from points 213L and 213R. With the arcuate slots 577 and corresponding slots 255L and 255R in coupling brackets 250L and 250R respectively, the entire mechanism may be lifted.
  • Locking members 280L and 280R are provided with a slot so that bar members 250L and 250R may be pivotally coupled to members 280L and 289, respectively, permitting the assembly 100 to be raised to pad changing position as indicated by numeral 103 in Figure 1.
  • FIG. 5 a schematic block diagram is illustrated representing one exemplary embodiment of a control system for a floor maintenance appliance that controls the work output delivered to a floor by a rotatable work tool, such as a polishing pad, a scrubber, a brush, etc.
  • a control system may be utilized in conjunction with embodiments of the present invention to control linear actuator 220. Additional aspects of this control system are disclosed in U.S. Patent Application Serial No. 10/ , filed on
  • a floor maintenance assembly 10 is configured as a burnishing system suspended from a frame 22 associated with a floor maintenance machine (not shown) by way of an actuator 20.
  • the actuator 20 is configured to raise and lower the maintenance assembly 10 relative to the floor 24.
  • a burnishing tool is illustrated in the Figures, it should be understood that the maintenance assembly 10 may be configured to perform other types of maintenance tasks, such as sweeping and scrubbing, or a combination of maintenance tasks.
  • the maintenance assembly 10 includes a rotatable driver 12 having a rotatable shaft 14 coupled to a driver motor 16.
  • the rotatable work tool for performing the work task is a burnishing pad 18 that is coupled to a rotatable driver 12.
  • the maintenance assembly 10 and the actuator 20 may be implemented by way of a wide array of components and techniques, many of which have been described in the aforementioned published patents and publications, among others.

Landscapes

  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

Cette invention porte sur un système de suspension servant à coupler un outil ou un appareil d'entretien de surfaces à une machine d'entretien de surfaces. Dans un mode de réalisation préféré, le système de suspension comprend : un quadrilatère articulé (230L, 240L, 230R, 240R) qui permet à l'outil d'entretien de surfaces d'être soulevé et abaissé par rapport à la machine d'entretien de surfaces pour qu'il soit en contact sélectif avec la surface du sol ; un ensemble ressort (400) qui transfert la tension du ressort sur l'outil d'entretien de surfaces ; ainsi qu'un actionneur (220) à commande sélective connecté à l'ensemble ressort afin que le degré de tension du ressort soit commandé, de sorte qu'un degré commandé de travail de l'outil d'entretien de surfaces soit effectué sur la surface du sol.
PCT/US2002/016249 2001-05-21 2002-05-21 Suspension pour appareil d'entretien de surfaces WO2002094078A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29267501P 2001-05-21 2001-05-21
US60/292,675 2001-05-21

Publications (1)

Publication Number Publication Date
WO2002094078A1 true WO2002094078A1 (fr) 2002-11-28

Family

ID=23125694

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/016249 WO2002094078A1 (fr) 2001-05-21 2002-05-21 Suspension pour appareil d'entretien de surfaces

Country Status (2)

Country Link
US (1) US20020170130A1 (fr)
WO (1) WO2002094078A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7014714B2 (en) * 2003-09-05 2006-03-21 Brunswick Bowling & Billiards Corporation Apparatus and method for conditioning a bowling lane using precision delivery injectors
US7784147B2 (en) * 2003-09-05 2010-08-31 Brunswick Bowling & Billiards Corporation Bowling lane conditioning machine
EP1734853B1 (fr) * 2004-03-05 2012-09-12 Tennant Company Ensemble raclette laterale surbaisse
US7287299B2 (en) * 2004-03-05 2007-10-30 Tennant Simplified rear squeegee linkage for surface cleaning equipment
US20060130754A1 (en) * 2004-12-17 2006-06-22 Brunswick Bowling & Billiards Bowling lane conditioning machine
US7540799B1 (en) * 2007-02-26 2009-06-02 Trojan Daniel R System for adjusting an end effector relative to a workpiece
US8769755B2 (en) * 2009-11-09 2014-07-08 Tennant Company Side brush assembly mechanism
WO2013017167A1 (fr) 2011-08-02 2013-02-07 Alfred Kärcher Gmbh & Co. Kg Machine mobile de nettoyage des sols et procédé permettant de faire fonctionner une machine de nettoyage des sols
US9498099B2 (en) * 2012-02-16 2016-11-22 Tennant Company Surface maintenance vehicle with compact side brush assembly
CN104271022B (zh) * 2012-02-16 2017-10-17 坦南特公司 具有紧凑的清洁头部提升机构和悬架的表面维护车辆
CN102677619B (zh) * 2012-05-17 2015-04-08 南通弗士特环保机械有限责任公司 小型电动清扫车盘刷的升降机构
US9554684B1 (en) * 2012-10-04 2017-01-31 Pacific Steamex Cleaning Systems, Inc. Floor scrubber with scrubber head adjustment assembly
WO2016197035A1 (fr) * 2015-06-04 2016-12-08 Nilfisk, Inc. Machine de nettoyage
US20190076979A1 (en) * 2017-09-12 2019-03-14 David Graham Modular grinder vehicle
US11116378B2 (en) * 2018-02-28 2021-09-14 Rps Corporation Floor maintenance machine deck assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731956A (en) * 1986-10-21 1988-03-22 Advance Machine Company Floor polishing machine
EP0391457A1 (fr) * 1989-04-03 1990-10-10 Unilever N.V. Machine de nettoyage de sol à pression contrôlée de la brosse
EP0910981A1 (fr) * 1997-10-22 1999-04-28 Alto U.S. Inc. Système de positionnement d'un support de brosse
US6000084A (en) * 1996-09-04 1999-12-14 Briscoe; William Anthony Surface working apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204280A (en) * 1963-01-17 1965-09-07 Campbell Cleatis Floor cleaning and waxing machine
US4492002A (en) * 1980-09-12 1985-01-08 Wetrok, Inc. Floor cleaning machine
US4757566A (en) * 1987-07-27 1988-07-19 Tennant Company Control of torque in floor maintenance tools by drive motor load
US5481776A (en) * 1993-11-17 1996-01-09 Briscoe William A Brush pressure system
JP3202474B2 (ja) * 1994-02-28 2001-08-27 アマノ株式会社 パッド押圧力調整機能を備えた床面艶出機
JP3493539B2 (ja) * 1996-06-03 2004-02-03 ミノルタ株式会社 走行作業ロボット
US6163915A (en) * 1997-09-04 2000-12-26 Minuteman International, Inc. Control system for floor care machine
US6493896B1 (en) * 1998-10-22 2002-12-17 Alto U.S. Inc. Brush head positioning system
US5943724A (en) * 1998-01-13 1999-08-31 Tennant Company Electro-hydraulic brush down force control
US6227957B1 (en) * 1998-05-22 2001-05-08 Nilfisk-Advance, Inc. Battery powered, riding, floor burnishing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731956A (en) * 1986-10-21 1988-03-22 Advance Machine Company Floor polishing machine
EP0391457A1 (fr) * 1989-04-03 1990-10-10 Unilever N.V. Machine de nettoyage de sol à pression contrôlée de la brosse
US6000084A (en) * 1996-09-04 1999-12-14 Briscoe; William Anthony Surface working apparatus
EP0910981A1 (fr) * 1997-10-22 1999-04-28 Alto U.S. Inc. Système de positionnement d'un support de brosse

Also Published As

Publication number Publication date
US20020170130A1 (en) 2002-11-21

Similar Documents

Publication Publication Date Title
WO2002094078A1 (fr) Suspension pour appareil d'entretien de surfaces
US6836919B2 (en) Suspension device for floor maintenance appliance
US5673450A (en) Brush pressure system
JPH03191939A (ja) 床洗浄機
US6530102B1 (en) Scrubber head anti-vibration mounting
US6618888B2 (en) Dual downforce mechanism for a cleaning head of a surface conditioning vehicle
EP1841348B1 (fr) Brosseuse a mouvement orbital
EP2814369B1 (fr) Véhicule d'entretien de surface ayant un ensemble brosse latéral compact
US4803753A (en) Self-propelled carpet scrubbing machine
US5048141A (en) Floor-cleaning machine with improved brush pressure control
EP0969757B1 (fr) Appareil de travail des surfaces
WO2009058429A1 (fr) Brosseuse à mouvement orbital avec élément stabilisateur
US5481776A (en) Brush pressure system
US7313839B2 (en) Sweeping system with front removable hopper
US4218798A (en) Floor treating machine
US5479672A (en) Floor cleaning and polishing equipment
KR101622585B1 (ko) 소형의 세정 헤드 리프트 기계장치 및 서스펜션을 구비한 표면 정비 차량
CN216194352U (zh) 一种贴地清扫装置
EP1600095B1 (fr) Contrôle d'un outil par utilisation de la force contre-électromotrice
GB2283905A (en) Brush pressure system for floor cleaning/sweeping machine
RU2151539C1 (ru) Система давления щеток
JPH0618546B2 (ja) 床面除染装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP