EP0718957B1 - Pump for a high pressure cleaning appliance - Google Patents

Pump for a high pressure cleaning appliance Download PDF

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Publication number
EP0718957B1
EP0718957B1 EP95118603A EP95118603A EP0718957B1 EP 0718957 B1 EP0718957 B1 EP 0718957B1 EP 95118603 A EP95118603 A EP 95118603A EP 95118603 A EP95118603 A EP 95118603A EP 0718957 B1 EP0718957 B1 EP 0718957B1
Authority
EP
European Patent Office
Prior art keywords
housing
motor
pump
pump according
half shells
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP95118603A
Other languages
German (de)
French (fr)
Other versions
EP0718957A1 (en
Inventor
Robert Nathan
Thomas Maier
Bernd Keiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP0718957A1 publication Critical patent/EP0718957A1/en
Application granted granted Critical
Publication of EP0718957B1 publication Critical patent/EP0718957B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • B08B3/026Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028Spray guns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Definitions

  • Modules from an engine and one attached to it and this driven pump is used in high pressure washers used and often in a housing installed, in which the unit at a distance from Housing wall must be stored.
  • This storage is supposed to Possibility so that vibrations and noises as little as possible between the housing and the structural unit be transmitted.

Description

Die Erfindung betrifft eine Pumpe für ein Hochdruckreinigungsgerät mit einem Motor und einem Pumpenkopf, die gemeinsam in einem Gehäuse festgelegt sind (siehe EP-A-0 374 739).The invention relates to a pump for a high-pressure cleaning device with a motor and a pump head that are fixed together in one housing (see EP-A-0 374 739).

Die Figur 4 der US-A-4 993 457 zeigt die Lagerung einer Pumpe, bei der diese am Gehäuse über schockabsorbierende Lager gelagert ist, die Gummiteile zwischen der Pumpe und dem Gehäuse umfassen. Insbesondere fehlt jeder Hinweis darauf, das Gehäuse halbschalig auszubilden und in der Weise zu trennen, daß beim Zusammenführen der Halbschalen automatisch die Vorsprünge in die in die Halbschalen eingesetzten elastischen Lagerkörper eintreten.FIG. 4 of US-A-4 993 457 shows the mounting of a pump, in which the pump is mounted on the housing via shock-absorbing bearings, which comprise rubber parts between the pump and the housing. In particular, there is no indication that the housing is half-shelled and separated in such a way that when the half-shells are brought together, the projections automatically enter the elastic bearing bodies inserted into the half-shells.

Baueinheiten aus einem Motor und einer daran befestigten und von diesem angetriebenen Pumpe werden in Hochdruckreinigungsgeräten verwendet und dazu häufig in ein Gehäuse eingebaut, in welchem die Baueinheit im Abstand zur Gehäusewand gelagert werden muß. Diese Lagerung soll nach Möglichkeit so erfolgen, daß Schwingungen und Geräusche zwischen dem Gehäuse und der Baueinheit möglichst wenig übertragen werden. Es sind dazu komplizierte Aufhängevorrichtungen bekannt, beispielsweise die Baueinheit umgebende Gummimanschetten, mit deren Hilfe die Baueinheit in einem Gehäuse aufgehängt werden kann.Modules from an engine and one attached to it and this driven pump is used in high pressure washers used and often in a housing installed, in which the unit at a distance from Housing wall must be stored. This storage is supposed to Possibility so that vibrations and noises as little as possible between the housing and the structural unit be transmitted. There are complicated hanging devices for this known, for example surrounding the unit Rubber sleeves, with the help of which the unit in one Housing can be hung.

Es ist Aufgabe der Erfindung, eine konstruktiv besonders einfache gedämpfte Lagerung einer derartigen Baueinheit in einem Gehäuse anzugeben, bei der auch die Montage gegenüber herkömmlichen Konstruktionen vereinfacht ist. It is an object of the invention, a constructively special simple damped storage of such a unit in specify a housing in which also the assembly opposite conventional designs is simplified.

Diese Aufgabe wird bei einer Pumpe der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß das Gehäuse aus zwei Halbschalen besteht, daß beide Halbschalen parallel zur Verbindungsrichtung beider Halbschalen verlaufende Vertiefungen aufweisen, in denen jeweils ein Lagerkörper aus einem gummielastischen Werkstoff angeordnet ist, der seinerseits zur jeweils anderen Halbschale hin offene und parallel zur Verbindungsrichtung der Halbschalen gerichtete Ausnehmungen aufweist, und daß die Baueinheit aus Motor und Pumpenkopf auf gegenüberliegenden Seiten parallel zueinander verlaufende, komplementär in die Ausnehmungen passende und mit diesen ausgerichtete Vorsprünge trägt.This task is described for a pump as described in the introduction Art solved according to the invention in that the housing consists of two half shells that both half shells are parallel to the direction of connection of both half shells Have depressions, in each of which a bearing body is arranged from a rubber-elastic material, the in turn open and towards the other half shell directed parallel to the direction of connection of the half-shells Has recesses, and that the assembly of motor and Pump head on opposite sides parallel to each other running, complementary fitting into the recesses and carries projections aligned with them.

Eine solche Ausgestaltung ermöglicht eine sehr einfache schwingungsgedämpfte Lagerung der Baueinheit in einem Gehäuse. Es genügt nämlich, die Baueinheit in die untere Halbschale so einzusetzen, daß die an der Baueinheit an der Unterseite angeordneten Vorsprünge in die Ausnehmungen der Lagerkörper der unteren Halbschale eingreifen. Anschließend wird die zweite Halbschale von oben her, d.h. in Verbindungsrichtung, an die untere Halbschale herangeführt, und dabei greifen die Vorsprünge an der Oberseite der Baueinheit in die Ausnehmungen der Lagerkörper der oberen Halbschale ein. Sobald die beiden Halbschalen aneinanderliegen, werden sie in dieser Position fest miteinander verbunden, die Vorsprünge an der Baueinheit tauchen dabei vollständig in die entsprechenden Ausnehmungen der Lagerkörper an der Unterseite und an der Oberseite, also in den beiden Halbschalen, des Gehäuses ein, so daß die Baueinheit dadurch im Gehäuse einwandfrei festgelegt ist. Ein besonderes Werkzeug ist dazu nicht notwendig, auch der konstruktive Aufwand ist außerordentlich gering, da es genügt entsprechende Vorsprünge an der Baueinheit vorzusehen und entsprechende Vertiefungen mit gummielastischen Lagerkörpern an den beiden Halbschalen.Such a configuration enables a very simple one vibration-damped mounting of the unit in one Casing. It is sufficient to place the unit in the lower one Use half-shell so that the on the assembly on the Underside arranged projections in the recesses of the Engage the bearing body of the lower half-shell. Subsequently the second half shell from above, i.e. in the connecting direction, brought up to the lower half shell, and the projections on the top of the assembly grip in the recesses of the bearing body of the upper half-shell a. As soon as the two half shells lie against each other, they are firmly connected to each other in this position, the protrusions on the assembly submerge completely in the corresponding recesses of the bearing body on the Bottom and top, i.e. in the two half shells, of the housing, so that the unit thereby Housing is set properly. A special tool is not necessary, the design effort is also extraordinarily small, since corresponding protrusions are sufficient to be provided on the unit and corresponding recesses with rubber-elastic bearing bodies on the two Half shells.

Günstig ist es, wenn die Vertiefungen in den Halbschalen topfförmig ausgebildet sind.It is favorable if the depressions in the half-shells are cup-shaped.

Bei einer bevorzugten Ausführungsform der Erfindung sind die Lagerkörper in die Vertiefungen eingesetzte Stopfen.In a preferred embodiment of the invention the plug inserted into the recesses.

Zusätzlich können in der Wand der Lagerkörper deren Zusammendrückbarkeit erhöhende Ausnehmungen angeordnet sein. Dadurch lassen sich die Vorsprünge unter Umständen besser im Klemmsitz in die Lagerkörper einführen, außerdem können dadurch gegebenenfalls Toleranzen besser ausgeglichen werden. Trotzdem kann bei derartigen Lagerkörpern ein Material verwendet werden, daß selbst keine allzuhohe Zusammendrückbarkeit zeigt, so daß eine sehr stabile Lagerung gewährleistet ist.In addition, their compressibility can be in the wall of the bearing body increasing recesses can be arranged. This may make the protrusions better insert into the bearing body in a clamped position, also can this allows tolerances to be better compensated if necessary. Nevertheless, a material can be used with such bearing bodies used that itself is not too high a compressibility shows, so that a very stable storage is guaranteed is.

Die Vorsprünge können bevorzugt an das Motorgehäuse angeformte Zapfen sein.The projections can preferably be molded onto the motor housing Be cones.

Bei einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß das Gehäuse einen kreisförmigen Querschnitt aufweist, daß der Motor und die Pumpe im wesentlichen koaxial in diesem kreiszylindrischen Gehäuse angeordnet sind und daß die Vorsprünge etwa tangential am ebenfalls kreiszylindrisch ausgebildeten Motorgehäuse angeordnet sind. Eine solche Anordnung nützt den Raum optimal aus, der bei kreiszylindrischer Ausgestaltung des Gehäuses an der Außenseite verbleibt, so daß die Bauhöhe des Gehäuses insgesamt dadurch nicht oder nur unwesentlich erhöht wird. In a preferred embodiment of the invention provided that the housing has a circular cross section has that the motor and the pump substantially coaxial are arranged in this circular cylindrical housing and that the projections are approximately tangential to the circular cylindrical trained motor housing are arranged. Such an arrangement makes optimal use of the space at circular cylindrical design of the housing on the Outside remains, so that the overall height of the housing is not increased thereby or only insignificantly.

Besonders vorteilhaft ist es, wenn die beiden Halbschalen im wesentlichen spiegelbildlich ausgebildet sind.It is particularly advantageous if the two half-shells are essentially mirror images.

Im Zwischenraum zwischen Motorgehäuse und dem äußeren Gehäuse können am Motorgehäuse angeformte Kühlrippen angeordnet sein.In the space between the motor housing and the outer housing molded cooling fins can be arranged on the motor housing be.

Es ist vorteilhaft, wenn die Vorsprünge an einem schwingungsarmen Teil des Motorgehäuses angeordnet sind, beispielsweise dem Teil, der den Stator des Elektromotors umgibt. In diesem Bereich zeigt das Motorgehäuse die geringsten Schwingungen, und dadurch ist auch die Übertragung der Schwingungen vom Motorgehäuse auf das umgebende Gehäuse auf ein Minimum reduziert.It is advantageous if the projections on a low-vibration Part of the motor housing are arranged, for example the part that surrounds the stator of the electric motor. The motor housing shows the smallest in this area Vibrations, and this is also the transmission of Vibrations from the motor housing to the surrounding housing reduced to a minimum.

Die nachfolgende Beschreibung einer bevorzugten Ausführungsform der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Die Zeichnung zeigt eine Querschnittansicht eines in einem zweischaligen Gehäuse gelagerten Motors.The following description of a preferred embodiment the invention serves in connection with the Drawing of the detailed explanation. The drawing shows one Cross-sectional view of a stored in a double-shell housing Motors.

Der in der Zeichnung nur sehr schematisch wiedergegebene Motor 1 ist in einem kreiszylindrischen Gehäuse 2 untergebracht, an welches an der Außenseite abstehende Kühlrippen 3 angeformt sind. An der Unterseite und an der Oberseite sind senkrecht nach oben und senkrecht nach unten abstehende Zapfen 4 an das Gehäuse 2 angeformt, sie sind in dem dargestellten Ausführungsbeispiel miteinander ausgerichtet und verlaufen gegenüber einer senkrechten Tangente an das Gehäuse 2 geringfügig nach innen versetzt. Vorzugsweise sind die Zapfen 4 in dem Bereich an das Gehäuse 2 angeformt, der den Stator des Elektromotors umgibt, da dieser Teil des Gehäuses besonders schwingungsarm ist. The one shown only very schematically in the drawing Motor 1 is housed in a circular cylindrical housing 2, to which cooling fins protruding on the outside 3 are molded. At the bottom and at the top are protruding vertically upwards and vertically downwards Pins 4 molded onto the housing 2, they are in the illustrated embodiment aligned with each other and run against a vertical tangent to the housing 2 slightly shifted inwards. Preferably the pins 4 are molded onto the housing 2 in the area, that surrounds the stator of the electric motor because it Part of the housing is particularly low in vibration.

Das Motorgehäuse 2 wird umgeben von einem äußeren Gehäuse 5, welches ebenfalls im wesentlichen kreiszylindrisch ausgebildet ist und welches aus zwei im wesentlichen gleich ausgebildeten Halbschalen 6, 7 geformt wird.The motor housing 2 is surrounded by an outer housing 5, which is also essentially circular cylindrical and which of two is essentially the same trained half-shells 6, 7 is formed.

Jede der beiden Halbschalen weist eine in Richtung der Verbindungsrichtung der beiden Halbschalen, d.h. senkrecht zur Trennebene der beiden Halbschalen verlaufende, topfförmige Vertiefung 8 auf, in die ein gummielastischer Stopfen 9 eingesteckt ist. Dieser Stopfen 9 weist eine zentrale, zur Innenseite hin offene und parallel zur Achse der Vertiefung 8 verlaufende Ausnehmung 10 auf, deren Durchmesser im wesentlichen dem Durchmesser des Zapfens 4 entspricht. In der Wand des gummielastischen Stopfes 9 sind weitere Ausnehmungen 11 vorgesehen, beispielsweise in Form von Ringnuten oder Durchgangsbohrungen, die die Zusammendrückbarkeit des gummielastischen Materials in diesem Bereich erhöhen.Each of the two half-shells has one in the direction of the connection direction of the two half-shells, i.e. perpendicular to Parting plane of the two half-shells, cup-shaped Indentation 8 into which a rubber-elastic plug 9 is plugged in. This plug 9 has a central, for Open on the inside and parallel to the axis of the recess 8 extending recess 10, the diameter of which is substantially corresponds to the diameter of the pin 4. In the Wall of the rubber-elastic plug 9 are further recesses 11 provided, for example in the form of annular grooves or through holes that increase the compressibility of the increase rubber-elastic material in this area.

Zur Positionierung des Motors 1 in dem Gehäuse 5 wird der Motor 1 von oben her in die untere Halbschale 6 eingelegt, und zwar derart, daß der Zapfen 4 an der Unterseite des Gehäuses 2 in die Ausnehmung 10 des Stopfens 9 der unteren Halbschale 6 eingreift. Anschließend wird von oben her die zweite Halbschale 7 aufgesetzt, und beim Aufsetzen wird der Stopfen 9 der oberen Halbschale 7 so über den an der Oberseite des Gehäuses 2 angeordneten Zapfens 4 geschoben, daß dieser Zapfen 4 in die Ausnehmung 10 des Stopfens 9 der oberen Halbschale 7 eintritt. Nach der vollständigen Annäherung der beiden Halbschalen 6 und 7 werden diese miteinander verbunden, beispielsweise durch Verschraubung. Die an der Unterseite und an der Oberseite des Gehäuses 2 abstehenden Zapfen 4 tauchen dann vollständig in die Ausnehmungen 10 der Stopfen 9 ein, und dadurch wird der Motor 1 im Inneren des Gehäuses 5 exakt fixiert, und zwar über eine Brücke aus gummielastischem Werkstoff, so daß die Übertragung von Geräuschen und Schwingungen weitgehend gedämpft wird.To position the motor 1 in the housing 5 Motor 1 inserted into the lower half-shell 6 from above, in such a way that the pin 4 on the underside of the housing 2 in the recess 10 of the plug 9 of the lower Half shell 6 engages. Then from above second half-shell 7 placed, and when placing the Plug 9 of the upper half-shell 7 over the top the housing 2 arranged pin 4 pushed that this pin 4 in the recess 10 of the plug 9 of the upper half-shell 7 occurs. After the full approximation of the two half-shells 6 and 7, these are together connected, for example by screwing. The on the underside and on the top of the housing 2 protruding pins 4 are then completely immersed in the recesses 10 the plug 9, and thereby the engine 1 fixed exactly inside the housing 5, namely via a bridge made of rubber-elastic material, so that the Transmission of noises and vibrations largely is steamed.

Zur Verbindung des Motors mit dem äußeren Gehäuse 5 ist keinerlei Werkzeug notwendig, es genügt, die beiden Halbschalen 6 und 7 in der beschriebenen Weise in Verbindungsrichtung aneinander anzunähern und sie dann bei vollständiger Anlage miteinander zu verbinden.To connect the motor to the outer housing 5 is no tools required, just the two half-shells 6 and 7 in the manner described in the connecting direction to approach each other and then when complete To connect the system to one another.

Claims (9)

  1. A pump for a high-pressure cleaning device, with a motor (1) and a pump head which are jointly secured in a housing (5), characterized in that the housing (5) comprises two half shells (6, 7), the two half shells (6, 7) have depressions (8) which extend parallel to the direction of the join of the two half shells (6, 7) and in which one respective bearing member (9) of a rubber elastic material is arranged in each case, the bearing member (9) in turn being provided with recesses (10) open towards the respective other half shell and orientated parallel to the direction of the join of the half shells (6, 7), and the structural unit comprising the motor (1) and the pump head is provided with projections (4) which extend parallel to one another on opposite sides, fit into the recesses (10) in a complementary manner and are orientated therewith.
  2. A pump according to Claim 1, characterized in that the depressions (8) in the half shells (6, 7) are made cup-shaped.
  3. A pump according to Claim 1 or 2, characterized in that the bearing members (9) are plugs inserted into the depressions (8).
  4. A pump according to one of the preceding Claims, characterized in that openings (11) which increase the compressibility of the bearing members (9) are provided in the wall of the said bearing members (9).
  5. A pump according to one of the preceding Claims, characterized in that the projections (4) are pins integrally moulded on the motor housing (2).
  6. A pump according to one of the preceding Claims, characterized in that the housing (5) has a circular cross-section, the motor (1) and the pump are arranged substantially coaxially in the said circular cylindrical housing (5), and the projections (4) are arranged substantially tangentially on the motor housing (2) which is likewise made circular cylindrical.
  7. A pump according to one of the preceding Claims, characterized in that the two half shells (6, 7) are made substantially mirror-inverted.
  8. A pump according to one of the preceding Claims, characterized in that cooling ribs (3) integrally moulded on the motor housing (2) are provided in the interspace between the motor housing (2) and the outer housing (5).
  9. A pump according to one of the preceding Claims, characterized in that the projections (4) are arranged on a part of the motor housing (2) which is constructed so as to be particularly free from vibrations, in particular on a part of the motor housing (2) which surrounds the stator of the motor.
EP95118603A 1994-12-20 1995-11-25 Pump for a high pressure cleaning appliance Expired - Lifetime EP0718957B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445521 1994-12-20
DE4445521A DE4445521C1 (en) 1994-12-20 1994-12-20 Pump for high=pressure cleaning device

Publications (2)

Publication Number Publication Date
EP0718957A1 EP0718957A1 (en) 1996-06-26
EP0718957B1 true EP0718957B1 (en) 1998-02-11

Family

ID=6536418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118603A Expired - Lifetime EP0718957B1 (en) 1994-12-20 1995-11-25 Pump for a high pressure cleaning appliance

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EP (1) EP0718957B1 (en)
DE (2) DE4445521C1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29717390U1 (en) * 1997-09-30 1998-02-26 Wap Reinigungssysteme High pressure cleaning device with hose reel
DK2620228T3 (en) 2008-11-14 2017-08-21 Kaercher Gmbh & Co Kg Alfred Pressure Washer
DE102009010461A1 (en) 2009-02-13 2010-08-19 Alfred Kärcher Gmbh & Co. Kg Motor pump unit
EP2396550B1 (en) 2009-02-13 2014-04-02 Alfred Kärcher GmbH & Co. KG Motor pump unit
CN102292543B (en) 2009-02-13 2015-02-18 阿尔弗雷德·凯驰两合公司 Motor pump unit
WO2011044937A1 (en) 2009-10-14 2011-04-21 Alfred Kärcher Gmbh & Co. Kg High-pressure cleaning device
HUE035267T2 (en) 2009-10-14 2018-05-02 Kaercher Gmbh & Co Kg Alfred High-pressure cleaning device
WO2011044938A1 (en) 2009-10-14 2011-04-21 Alfred Kärcher Gmbh & Co. Kg High-pressure cleaning device
DE112015003037B4 (en) * 2014-06-27 2023-05-04 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Device for vibration-decoupled engine mounting

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993457A (en) * 1990-07-18 1991-02-19 Shop-Vac Corporation Housing arrangement for a fluid pump and tank

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6509286A (en) * 1965-07-17 1967-01-18
DE3017117A1 (en) * 1980-05-03 1981-11-19 Alfred Kärcher GmbH & Co, 7057 Winnenden High pressure cleaner for multiple toilet units - has high pressure pump driven by electric motor and enclosed by housing made as two shells
US4827147A (en) * 1986-11-12 1989-05-02 Honda Giken Kogyo Kabushiki Kaisha Engine-powered portable working apparatus
DK715088A (en) * 1988-12-21 1990-06-22 Westergaard Knud E Ind As ENGINE PUMP UNIT FOR A HIGH PRESSURE CLEANER
DE4000861C3 (en) * 1990-01-13 1999-04-08 Atlas Copco Electric Tools Hand-held impact drill with vibration damping
US5026476A (en) * 1990-06-06 1991-06-25 Sumitomo Heavy Industries, Ltd. Antivibration cover for rotary machine
DE4306588A1 (en) * 1992-07-14 1994-01-20 Bosch Gmbh Robert Vibration damping holder for electric motor - has damping element attached to bridge on housing and supported in radial direction by two angled motor holder support surfaces

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993457A (en) * 1990-07-18 1991-02-19 Shop-Vac Corporation Housing arrangement for a fluid pump and tank

Also Published As

Publication number Publication date
EP0718957A1 (en) 1996-06-26
DE4445521C1 (en) 1995-12-07
DE59501446D1 (en) 1998-03-19

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