DE19745279A1 - Pressure medium feed unit for hydraulic systems - Google Patents
Pressure medium feed unit for hydraulic systemsInfo
- Publication number
- DE19745279A1 DE19745279A1 DE1997145279 DE19745279A DE19745279A1 DE 19745279 A1 DE19745279 A1 DE 19745279A1 DE 1997145279 DE1997145279 DE 1997145279 DE 19745279 A DE19745279 A DE 19745279A DE 19745279 A1 DE19745279 A1 DE 19745279A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- unit
- piston
- linear motor
- housing
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4018—Pump units characterised by their drive mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4031—Pump units characterised by their construction or mounting
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Reciprocating Pumps (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Description
Die Erfindung betrifft ein Aggregat zur Förderung von Druck mitteln in Hydrauliksystemen bestehend aus einer Axialkolben pumpe mit Antrieb und Antreibssteuerung zur Erzeugung eines pulsationsarmen und variablen Druckes mit den Merkmalen des Oberbegriffes des Patentanspruchs 1.The invention relates to a unit for promoting pressure average in hydraulic systems consisting of an axial piston pump with drive and drive control to generate a low pulsation and variable pressure with the characteristics of The preamble of claim 1.
Zur Erzeugung eines kontinuierlichen pulsationsarmen Druckauf baus durch Pumpen sind Motorpumpenanordnungen bekannt, wobei der die Pumpe antreibende Motor mit der Pumpe über ein Kurven scheibengetriebe gekoppelt ist. Die Form der Kurvenscheibe des Getriebes gibt hierbei den Kolbenhub der Pumpe vor und steuert somit den Druckaufbau. Die Nachteile dieser Motorpumpenanord nungen ergeben sich zum einen aus ihrem konstruktiven Aufbau und zum zweiten aus ihrer Funktionsweise. Durch das Kurven scheibengetriebe erhöht sich zwangsläufig die für Motorpumpen aggregat notwendige Anzahl von Baugruppen und Bauteilen. Die Notwendigkeit einer erhöhten Anzahl von Bauteilen erzeugt ein Axialkolbenmotoraggregat mit relativ großem Bauvolumen und hohem Gewicht und verteuert die gesamte Anordnung in un erwünschter Weise. Ein erwünschter flexibel zu gestaltender Druckaufbau wird durch die Vorgabe der festen Scheibengeome trie beeinträchtigt. Ein veränderbarer Druckaufbau, der sich aus verändernden Drucknachfragen ergibt, ist hierbei nicht möglich.To generate a continuous low pulsation pressure Construction by pumps, motor pump arrangements are known, wherein the motor driving the pump with the pump over a curve disc gear is coupled. The shape of the cam Gearbox specifies the piston stroke of the pump and controls thus the pressure build-up. The disadvantages of this motor pump arrangement on the one hand, results from their constructive structure and secondly, how they work. By cornering disc gearbox inevitably increases that for motor pumps required number of assemblies and components. The The need for an increased number of components creates a Axial piston motor unit with a relatively large volume and heavy weight and more expensive the whole arrangement in un desired way. A desired flexible one Pressure is built up by specifying the fixed disc geometry trie impaired. A changeable build-up of pressure resulting from changing print requests is not here possible.
Weitere Pumpenformen, Elektromagnetkolbenpumpen, sog. Schwing kolbenpumpen sind ebenfalls zur Erzeugung eines pulsations armen und variablen Druckaufbaus bekannt. Diese Pumpenart be steht aus einem freischwingenden Kolben, der im Förderkanal der Pumpe eingelegt ist und mittels Elektromagnet, der um den Förderkanal gruppiert ist, bewegt werden. Diese Elektromagnet pumpen werden zum Fördern von kompressiblen Medien und im Nie derdruckbereich für inkompressible Medien verwendet. Für die Anwendung im Hochdruckbereich, wie er zum Beispiel in elektro nischen Bremsensystemen für Kraftfahrzeuge benötigt wird, sind diese Pumpen entsprechend ungeeignet.Other pump types, electromagnetic piston pumps, so-called vibrations piston pumps are also used to generate pulsation poor and variable pressure build-up known. This type of pump consists of a free-floating piston in the delivery channel the pump is inserted and by means of an electromagnet, which around the Delivery channel is grouped to be moved. This electromagnet Pumps are used to convey compressible media and never printing area used for incompressible media. For the Application in the high pressure area, such as in electro African brake systems for motor vehicles are needed these pumps are accordingly unsuitable.
Die Aufgabe der Erfindung ist es daher, ein Axialkolbenpumpen aggregat zur Erzeugung eines kontinuierlichen pulsationsfreien und variablen Druckaufbaus für alle Druckbereiche von Nieder- bis Hochdruck aus gewichtssparenden, kostengünstigen und ko stengünstig herzustellenden Mitteln zu entwickeln.The object of the invention is therefore an axial piston pump unit for generating a continuous pulsation-free and variable pressure build-up for all pressure ranges from low to high pressure from weight-saving, inexpensive and cost-effective to develop means that are inexpensive to manufacture.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale der Patentansprüche gelöst.This object is achieved by the characterizing Features of the claims solved.
Zu diesem Zwecke wird ein Axialkolbenpumpenaggregat verwendet, welches die Wirkweisen eines Linearmotors mit denen einer Axi alkolbenpumpe in einem Bauteil vereinigt. Die lineare Bewegung des Motorläufers des Linearmotors wird hierbei direkt auf die Kolben der Axialkolbenpumpeneinheit übertragen. Der Kolbenhub, der sich proportional zum Druckaufbau verhält, wird somit pro portional der Linearbewegung des Motorläufers gesteuert. Die frei programmierbare elektronische Regelung des Linearmotors ist somit in der Lage, einen pulsationsarmen kontinuierlichen und variablen Druckaufbau durch das Axialkolbenpumpenaggregat zu steuern.For this purpose an axial piston pump unit is used which shows how a linear motor works with an axi piston pump combined in one component. The linear movement the motor rotor of the linear motor is here directly on the Transfer the pistons of the axial piston pump unit. The piston stroke, which is proportional to the pressure build-up, is therefore pro controlled proportionally to the linear movement of the motor rotor. The freely programmable electronic control of the linear motor is thus able to provide a low pulsation continuous and variable pressure build-up through the axial piston pump unit to control.
Weitere Merkmale und Vorteile der Erfindung werden im nachfol genden anhand der Beschreibung eines konstruktiven Aus führungsbeispiels und des Aufbaus des Steuerungsablaufes dar gestellt. Further features and advantages of the invention are in the following based on the description of a constructive Aus example and the structure of the control process posed.
Es zeigen:Show it:
Fig. 1 einen Querschnitt durch das Axialkolbenpumpenaggregat Fig. 1 shows a cross section through the axial piston pump unit
Fig. 2 Regelkreis des Steuerungsablaufs des Axialkolbenpumpen aggregats anhand einer adaptiven Servoregelung. Fig. 2 control loop of the control sequence of the axial piston pump unit using an adaptive servo control.
In Fig. 1 ist das Aggregat zur Förderung von Druckmitteln in Hydrauliksystemen 1 dargestellt. Das Aggregat 1 wird aus einer Axialkolbenpumpe 2 und dem Läufer 3a eines Linearmotors 3 ge bildet. Die Axialkolbenpumpe 2 dient gleichzeitig als Ständer 3b für den Linearmotor 3 und baut zusammen mit einem Läufer 3a den Linearmotors 3 auf. Die Axialkolbenpumpe 2 ist aufgebaut aus dem Pumpengehäuse 2a, dem Pumpenzylinder 2b und dem Pum penkolben 2c. Der Pumpenkolben 2c wird in der Pumpenzylinder bohrung 2d des Pumpenzylinders 2b geführt und gegenüber der Zylinderbohrung 2d mittels eines Dichtelementes 5 abgedichtet. Weiterhin wird der Pumpenkolben 2c mit Hilfe einer Feder 6, die als Rückstellfeder für den Saugpumpenhub der Pumpe dient, gegen das Pumpengehäuse 2a abgestützt. Am Umfang des Pumpen gehäuses 2a sind Permanentmagnete 4 angeordnet, die das Stän dermagnetfeld des Linearmotors 3 erzeugen. Auf der der Zylin derbohrung 2d gegenüberliegenden Seite des Pumpengehäuses 2a sind zwei Gewindebohrungen 9 zum Anschluß an Hydraulikleitun gen z. B. die eines Bremssystems angeordnet. Die Verbindung der Elemente Gewindebohrung 9 und Saugventil 8 mittels einer im Pumpenzylinder 2b der Pumpe 2 endenden Saugleitung, bildet die Saugseite der Pumpe. Die Druckseite wird aus der zweiten Ge windeanschlußbohrung 9 und dem Druckventil 7, welche mittels einer Druckleitung mit dem Pumpenzylinder 2b verbunden sind, gebildet. In Fig. 1, the unit for conveying pressure medium in hydraulic systems 1 is shown. The unit 1 is formed from an axial piston pump 2 and the rotor 3 a of a linear motor 3 ge. The axial piston pump 2 serves as a stand 3 b for the linear motor 3 and assembles with a rotor 3a of the linear motor 3. The axial piston pump 2 is constructed from the pump housing 2 a, the pump cylinder 2 b and the pump piston 2 c. The pump piston 2 c is guided in the pump cylinder bore 2 d of the pump cylinder 2 b and sealed against the cylinder bore 2 d by means of a sealing element 5 . Furthermore, the pump piston 2 c is supported by means of a spring 6 , which serves as a return spring for the suction pump stroke of the pump, against the pump housing 2 a. On the circumference of the pump housing 2 a permanent magnets 4 are arranged, which generate the stan dermagnetfeld of the linear motor 3 . On the Zylin derbohrung 2 d opposite side of the pump housing 2 a are two threaded holes 9 for connecting to hydraulic lines gene z. B. arranged a brake system. The connection of the elements threaded hole 9 and the suction valve 8 by means of a in the pump cylinder 2 b of the pump 2 ending suction line, the suction side of the pump forms. The pressure side is formed from the second Ge threaded connection bore 9 and the pressure valve 7 , which are connected to the pump cylinder 2 b by means of a pressure line.
Der Läufer 3a des Linearmotors 3 setzt sich aus Spulenwick lungen 10 und einem Mitnehmerbügel 11 zusammen. Der als Brücke ausgebildete Mitnehmerbügel 11 verbindet die Spulenwicklungen 10 des Linearmotorläufers 3a und liegt auf dem ballig geform ten Ende des Pumpenkolbens 2g auf. Durch die ballige Form des Pumpenkolbenendes 2g ist eine querkraftfreie, in axialer Rich tung verlaufende Kraftübertragung von Linearmotorläufer 3a auf den Pumpenkolben 2c gewährleistet. Der Läufer 3a der Linear motoreinheit 3 wird relativ zum Ständer 3b des Linearmotors 3 durch am Umfang des Ständers 3b befestigte Lagerelemente 12 geführt. Als Lagerelemente 12 können sowohl Gleitlager als auch Wälzlager verwendet werden.The rotor 3 a of the linear motor 3 is composed of coil windings 10 and a driver bracket 11 together. The driver bracket 11 designed as a bridge connects the coil windings 10 of the linear motor rotor 3 a and lies on the crowned end of the pump piston 2 g. Due to the spherical shape of the pump piston end 2 g, a lateral force-free, axial force transmission from linear motor rotor 3 a to the pump piston 2 c is ensured. The rotor 3 a of the linear motor unit 3 is guided relative to the stator 3 b of the linear motor 3 by means of bearing elements 12 fastened to the circumference of the stator 3 b. Both slide bearings and roller bearings can be used as bearing elements 12 .
Werden die Wicklungsspulen 10 des Linearmotorläufers 3a mit Strom beschaltet, bewegt sich der Läufer 3a axial parallel zum Ständer des Linearmotors 3 und die Bewegung wird mittels der Mitnehmerbrücke 11 auf den Pumpenkolben 2c übertragen. Eine oszillierende Bewegung wird einmal durch die Kraftübertragung des Läufers 3a auf den Pumpenkolben 2c und einmal durch eine Rückstellfeder 6, die die Rückstellung des Pumpenkolbens 2c bewirkt, gewährleistet. Die Geschwindigkeit der Kolbenpumpen bewegung und der Kolbenpumpenhub wird mittels einer adaptiven Servoregelung gesteuert.When the winding coils 10 of the linear motor rotor 3 a wired with electricity, the rotor 3 moves axially parallel to a stator of the linear motor 3, and the movement is transmitted by means of the c Mitnehmerbrücke 11 on the pump piston. 2 An oscillating movement is ensured once by the power transmission of the rotor 3 a to the pump piston 2 c and once by a return spring 6 , which causes the pump piston 2 c to be reset. The speed of the piston pump movement and the piston pump stroke is controlled by means of an adaptive servo control.
Das komplette Aggregat zur Förderung von Druckmitteln 1 wird in ein Gehäuse 13 aufgenommen.The complete unit for conveying pressure medium 1 is accommodated in a housing 13 .
Fig. 2 zeigt einen Schaltplan des Regelkreises 14, welche den Hub der Pumpenkolben 2c steuert. Die Regelung ist als adaptive Servoregelung ausgelegt. Als die zu regelnde Größe, also die Ausgangsgröße des Reglers, wird der Druck des Massenstroms mittels Druckaufnehmer (nicht dargestellt), aufgezeichnet. Fig. 2 shows a circuit diagram of the control circuit 14 , which controls the stroke of the pump piston 2 c. The control is designed as an adaptive servo control. The pressure of the mass flow by means of a pressure sensor (not shown) is recorded as the variable to be controlled, that is to say the output variable of the controller.
Entsprechend des Ergebnisses wird die Eingangsgröße, der Kol benhub, variiert, solange bis der gewünschte Wert für den Aus gangsdruck, eingeregelt ist. According to the result, the input variable, the col benhub, varies until the desired value for the off gear pressure, is regulated.
11
Aggregat zur Förderung von Druckmitteln
in Hydrauliksystemen
Unit for pumping pressure medium in hydraulic systems
22nd
Axialkolbenpumpe
Axial piston pump
22nd
a Pumpengehäuse
a Pump housing
22nd
b Pumpenzylinder
b Pump cylinder
22nd
c Pumpenkolben
c Pump piston
22nd
d Pumpenzylinderbohrung
d pump cylinder bore
22nd
e Außenkontur des Pumpengehäuses
e External contour of the pump housing
22nd
f Bohrungswand
f hole wall
22nd
g balliges Pumpenkolbenende
g crowned pump piston end
22nd
h Hauptachse des Pumpengehäuses
h Main axis of the pump housing
33rd
Linearmotor
Linear motor
33rd
a Läufer der Liniarmotoreinheit
a Rotor of the linear motor unit
33rd
b Ständer der Linearmotoreinheit
b Stand of the linear motor unit
44th
Permanentmagnete des Ständers
Permanent magnets of the stand
55
Dichtelement
Sealing element
66
Rückstellfeder
Return spring
77
Druckventil
Pressure valve
88th
Saugventil
Suction valve
99
Hydraulikanschlüsse
Hydraulic connections
1010th
Spulenwicklung des Läufers
Coil winding of the rotor
1111
Mitnehmerbügel
Carrier bracket
1111
a punktförmige Auflagefläche
a punctiform contact surface
1212th
Lagerelement
Bearing element
1313
Gehäuse
casing
1414
Regelkreis der Axialkolbenpumpensteuerung
Control circuit of the axial piston pump control
Claims (12)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997145279 DE19745279A1 (en) | 1997-10-15 | 1997-10-15 | Pressure medium feed unit for hydraulic systems |
PCT/EP1998/006529 WO1999019624A1 (en) | 1997-10-15 | 1998-10-15 | Unit for conveying hydraulic fluid in hydraulic systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997145279 DE19745279A1 (en) | 1997-10-15 | 1997-10-15 | Pressure medium feed unit for hydraulic systems |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19745279A1 true DE19745279A1 (en) | 1999-04-22 |
Family
ID=7845462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1997145279 Withdrawn DE19745279A1 (en) | 1997-10-15 | 1997-10-15 | Pressure medium feed unit for hydraulic systems |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE19745279A1 (en) |
WO (1) | WO1999019624A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10007105A1 (en) * | 2000-02-16 | 2001-08-23 | Wilo Gmbh | Modular system with hydraulic components has electrical plug connector forming electrical interface on pump housing connecting electronic or electrical component to control electronics |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT501235B1 (en) * | 2004-11-23 | 2006-12-15 | Hoerbiger Automatisierungstech | HYDRAULIC COMBINATION UNIT |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE596890C (en) * | 1932-08-21 | 1935-03-18 | Wilhelm Koenig Dipl Ing | Drive for small compressors, especially for refrigeration machines |
US3781140A (en) * | 1971-05-26 | 1973-12-25 | Coleman Co | Synchronous reciprocating electrodynamic compressor system |
DE7926053U1 (en) * | 1979-09-13 | 1980-01-03 | Franz Klaus Union Armaturen Pumpen Gmbh & Co Kg, 4630 Bochum | PISTON DISPLACEMENT PUMP, IN PARTICULAR DOSING PUMP |
DE4015770A1 (en) * | 1989-05-16 | 1990-12-06 | Nitto Kohki Co | COMPRESSION PRESSURE CONTROL SYSTEM FOR AN ELECTROMAGNETIC PISTON PUMP |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3070024A (en) * | 1958-12-08 | 1962-12-25 | North American Aviation Inc | Magnetic drive |
JPS5310107A (en) * | 1976-07-15 | 1978-01-30 | Matsushita Electric Works Ltd | Movable coil type piston pump |
JP2667985B2 (en) | 1992-07-09 | 1997-10-27 | 株式会社ノダ | Floor structure |
JPH09151843A (en) * | 1995-11-28 | 1997-06-10 | Sanyo Electric Co Ltd | Linear compressor |
JP4017694B2 (en) * | 1996-10-29 | 2007-12-05 | 松下冷機株式会社 | Vibrating compressor |
-
1997
- 1997-10-15 DE DE1997145279 patent/DE19745279A1/en not_active Withdrawn
-
1998
- 1998-10-15 WO PCT/EP1998/006529 patent/WO1999019624A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE596890C (en) * | 1932-08-21 | 1935-03-18 | Wilhelm Koenig Dipl Ing | Drive for small compressors, especially for refrigeration machines |
US3781140A (en) * | 1971-05-26 | 1973-12-25 | Coleman Co | Synchronous reciprocating electrodynamic compressor system |
DE7926053U1 (en) * | 1979-09-13 | 1980-01-03 | Franz Klaus Union Armaturen Pumpen Gmbh & Co Kg, 4630 Bochum | PISTON DISPLACEMENT PUMP, IN PARTICULAR DOSING PUMP |
DE4015770A1 (en) * | 1989-05-16 | 1990-12-06 | Nitto Kohki Co | COMPRESSION PRESSURE CONTROL SYSTEM FOR AN ELECTROMAGNETIC PISTON PUMP |
Non-Patent Citations (2)
Title |
---|
53-10107 A * |
JP Patents Abstracts of Japan: 60-26185 A.,M-390,June 25,1985,Vol. 9,No.149 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10007105A1 (en) * | 2000-02-16 | 2001-08-23 | Wilo Gmbh | Modular system with hydraulic components has electrical plug connector forming electrical interface on pump housing connecting electronic or electrical component to control electronics |
Also Published As
Publication number | Publication date |
---|---|
WO1999019624A1 (en) | 1999-04-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: CONTINENTAL TEVES AG & CO. OHG, 60488 FRANKFURT, D |
|
8130 | Withdrawal |