EP0859151B1 - Kompressor, insbesondere für die Drucklufterzeugung in Kraftfahrzeugen - Google Patents
Kompressor, insbesondere für die Drucklufterzeugung in Kraftfahrzeugen Download PDFInfo
- Publication number
- EP0859151B1 EP0859151B1 EP98101952A EP98101952A EP0859151B1 EP 0859151 B1 EP0859151 B1 EP 0859151B1 EP 98101952 A EP98101952 A EP 98101952A EP 98101952 A EP98101952 A EP 98101952A EP 0859151 B1 EP0859151 B1 EP 0859151B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- oil
- input shaft
- cylinder head
- swash plate
- 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
Links
Images
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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0016—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons with valve arranged in the piston
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
- F04B27/0895—Component parts, e.g. sealings; Manufacturing or assembly thereof driving means
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1009—Distribution members
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/1054—Actuating elements
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
- F04B39/041—Measures to avoid lubricant contaminating the pumped fluid sealing for a reciprocating rod
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/064—Cooling by a cooling jacket in the pump casing
Definitions
- the invention relates to a compressor for generating compressed air in motor vehicles.
- a known compressor for coolant (US-A-5,492,459) is one by one Drive shaft driven engine provided with a swash plate provided which by means of piston rods with in cylinder bores of the compressor housing running piston communicates; are at the back of the pistons Provided chambers which are interconnected by an annular space, wherein the annulus forms a common suction connection.
- Each piston enters Suction valve and the pressure valves are formed in the cylinder head, such that the pressure chambers of the compressor between the front of the piston and the cylinder head consist.
- the suction chamber of the compressor provided on the rear of the pistons is opposite the engine, d. H. opposite that connected to the drive shaft Swashplate including your guides and bearings on the back Piston extensions not sealed; such a seal is also not provided because such compressors are not for oil-free compressed air generation are provided and the lubrication of the engine with lubricant additives in the coolant to be compressed can happen.
- a compressor (US-A-4,090,430) for gas compression is also known which is a strict separation between the engine and the rear of the pistons existing chambers is provided, the outer circumference of the pistons driving piston rods sealing elements for oil-free sealing of the chambers are provided.
- Suction and pressure valves are in the cylinder head of the compressor intended; a separate lubricant system is assigned to the engine, which compared to the existing chambers at the back of the pistons Help is sealed by the sealing elements acting on the piston rods.
- the pistons run dry, d. H. lubricant-free in assigned cylinder bores of the Compressor housing, so that such compressors for the oil-free compression of Gases, such as air, are provided.
- a special internal cooling of the cylinder head water or other coolant is not in such compressors provided and not possible because of the existing installation space in the cylinder head is largely occupied by the suction and pressure valves.
- the object of the invention is one for the generation of compressed air to serve in motor vehicles compressor, which the input disadvantages and problems mentioned is not subject and which despite compact Construction with dry running properties of the compressor pistons with sufficient Cooling in the cylinder head is provided.
- compressors this type of construction is comparatively inexpensive compared to today's compressors be producible.
- the compressor is characterized by a largely oil-free run, as by the stripping and sealing elements acting on the piston rods are very effective Sealing between engine and compressor part, d. H. compared to that the back of the piston located suction chamber is formed.
- the axial piston compressor shown in Figures 1 and 2 in the form of a swash plate compressor has an oil-lubricated engine 1, which essentially from a swash plate 5 and hemispheres mounted on a drive shaft 3 7 in 9 pans.
- the engine 1 of known mode of operation is used to make 3 straight movements when the drive shaft rotates to reach the piston rods 13 carrying the pistons 11.
- Warehousing the piston rods 13 take place in bearing bores 15 on the oil-lubricated engine side.
- the bearing bores 15 extend on a pitch circle at an angular distance to each other parallel to the longitudinal axis of the compressor by a middle Housing section 17, on which the piston facing oil-stripping sealing elements 19 are provided.
- the ones on the back of the pistons Chambers 21 are through an annular space 22 ( Figure 1) to a common suction space connected, in which a suction port opens.
- the pistons 11 are equipped with piston rings 23 suitable for oil-free dry running and move in the cylinder bores preferably without contact.
- This suction valve establishes the connection between during the suction stroke of the piston Suction chamber and pressure chamber 24 forth, the valve in accordance with FIG left-hand movement of the individual piston opens in such a way that air flows through the Suction port and the interconnected chambers 21 in the pressure chamber 24 arrives and with subsequent movement directed to the right according to FIG closing suction valve 25 via the pressure valve shown in the sectional view 29 and an annular pressure chamber 30 are pushed into the pressure connection 31 becomes.
- Branch bore is lubricated as shown, the right end of the drive shaft 3; Oil is drilled into the interior of the engine via further branch holes initiated. Inside the engine, the oil is used to lubricate all those with friction Divide and leave the compressor through an outlet 47, which communicates with the interior of the engine. In the area of lubrication a seal 48 is provided on the right-hand end of the drive shaft 3, which prevents oil from entering the suction chambers. Arrived via outlet 47 the oil back into the lubricant circuit of the vehicle engine.
- the transport of the cooling oil is not limited to the connection of the oil bore 43 and branch bores 45, ie in a further variant the cooling oil 41 is conducted into the engine 1 along the outer circumference of the housing or by means of channels placed in the housing wall. In this case, the oil chamber 41 is closed with respect to the facing end of the drive shaft 3.
- the very favorable torque curve of the compressor described above makes use of a compact, inexpensive shutdown clutch possible. It is possible to use the shut-off clutch, here as an electromagnetic clutch 49 shown to accommodate space-saving in the interior of the compressor.
- the Swash plate 5 is rotatably mounted on the drive shaft 3 and is at Excitation of the magnet from a magnetic disk fixedly attached to the drive shaft 3 51 driven.
- the magnetic disk 51 takes frictional engagement one with the swash plate 5 e.g. Drive plate connected by screws 52 with.
- the magnet is de-energized, the engagement between the drive plate is released and magnetic disc, so that the drive shaft 3 runs empty and the compressor pistons are switched off.
- the control with a pneumatically switched clutch is of a similar design possible.
- the drive shaft and the swash plate are separated, it is possible to produce the swash plate from an inexpensive and good lubricious material, such as. B. Al cast.
Description
- Figur 1
- ist eine Längsschnittansicht des Kompressors gemäß der Erfindung, wobei einer der Kolben in versetzter Betriebsstellung gezeigt ist (Linie I-I in Fig. 2); und
- Figur 2
- ist eine Schnitt- und Draufsicht von Linie II - II in Figur 1.
- 1 =
- Triebwerk
- 3 =
- Antriebswelle
- 5 =
- Taumelscheibe
- 7 =
- Halbkugel
- 9 =
- Lagerpfanne
- 11 =
- Kolben
- 13 =
- Kolbenstange
- 15 =
- Lagerbohrung
- 17 =
- Gehäuseabschnitt
- 19 =
- Abdichtelement
- 21 =
- Kammer
- 22 =
- Ringraum
- 23 =
- Kolbenring
- 24 =
- Druckraum
- 25 =
- Saugventil
- 29 =
- Druckventil
- 30 =
- Druckkammer
- 31 =
- Druckanschluß
- 33 =
- Zylinderkopf
- 35 =
- Einlaß
- 37 =
- Ringraum
- 39 =
- Verbindung
- 41 =
- Ölkammer
- 43 =
- Ölbohrung
- 45 =
- Zweigbohrung
- 47 =
- Auslaß
- 48 =
- Dichtung
- 49 =
- elektromagnetische Kupplung
- 51 =
- Magnetscheibe
- 52 =
- Mitnehmerscheibe
Claims (6)
- Kompressor für die Drucklufterzeugung in Kraftfahrzeugen, mit folgenden Merkmalen:a) der Kompressor weist ein durch eine Antriebswelle (3) angetriebenes, mit einer Taumelscheibe (5) versehenes und durch Öl geschmiertes Triebwerk (1) auf;b) das Triebwerk (1) steht mittels Kolbenstangen (13) mit in Zylinderbohrungen des Kompressorgehäuses laufenden Kolben (11) in Verbindung;c) an der Rückseite der Kolben (11) bestehen Kammern (21), welche durch einen Ringraum (22) miteinander verbunden sind und mit einem gemeinsamen Sauganschluss in Verbindung stehen;d) gegenüber jeder der Kolbenstangen (13) wirken Abdichtelemente (29) zur ölfreien Abdichtung der Kammern (21) gegenüber dem Triebwerk (1);e) jeder Kolben (11) trägt ein Saugventil (25) und der Zylinderkopf (33) trägt die Druckventile (29) des Kompressors, derart, dass die Druckräume (24) des Kompressors zwischen den Kolbenvorderseiten und dem Zylinderkopf (33) gebildet sind; undf) der Zylinderkopf (33) weist wenigstens einen Kühlmittelraum (Ringraum 37) zur Kühlung der Druckseite des Kompressors mittels Kühlöl oder Wasser auf.
- Kompressor nach Anspruch 1, dadurch gekennzeichnet, dass bei Verwendung von Kühlöl das Triebwerk (1) des Kompressors durch das Kühlöl des Zylinderkopfs (33) geschmiert ist.
- Kompressor nach Anspruch 2, gekennzeichnet durch folgende Merkmale:a) der Ringraum (37) im Inneren des Zylinderkopfs (33) steht mit einem Einlass (35) für das Kühl- und Schmieröl in Verbindung;b) der Zylinderkopf (33) begrenzt im Inneren des Kompressors eine zentral in Richtung des Triebwerks (1) sich erstreckende, über eine Verbindung (39) mit dem Ringraum (37) in Verbindung stehende Ölkammer (41); undc) die Ölkammer (41) ist triebwerksseitig durch die Antriebswelle (3) des Kompressors begrenzt und steht mit in der Antriebswelle (3) verlaufenden, zum Triebwerk führenden Bohrungen (Ölbohrung 43; Zweigbohrungen 45) in Verbindung.
- Kompressor nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine im Inneren des Kompressors die Antriebswelle (3) umgebende, elektromagnetisch oder pneumatisch betätigbare Kupplung (49) zur Koppelung der Antriebswelle (3) mit der Taumelscheibe (5).
- Kompressor nach Anspruch 4, dadurch gekennzeichnet, dass die Taumelscheibe (5) drehbar auf der Antriebswelle (3) gelagert und mittels der Kupplung (49) drehfest mit der Antriebswelle (3) koppelbar ist, so dass die Taumelscheibe (5) und die Antriebswelle (3) aus unterschiedlichen Werkstoffen darstellbar sind.
- Kompressor nach Anspruch 5, dadurch gekennzeichnet, dass die Antriebswelle (3) aus Stahl besteht, und dass die Taumelscheibe (5) aus einem kostengünstig herstellbaren, gut gleitlagerfähigen Werkstoff, z. B. Aluminium-Guss, ausgeführt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19706066A DE19706066A1 (de) | 1997-02-17 | 1997-02-17 | Kompressor, insbesondere für die Drucklufterzeugung in Kraftfahrzeugen |
DE19706066 | 1997-02-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0859151A2 EP0859151A2 (de) | 1998-08-19 |
EP0859151A3 EP0859151A3 (de) | 1999-08-04 |
EP0859151B1 true EP0859151B1 (de) | 2003-04-23 |
Family
ID=7820512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98101952A Expired - Lifetime EP0859151B1 (de) | 1997-02-17 | 1998-02-05 | Kompressor, insbesondere für die Drucklufterzeugung in Kraftfahrzeugen |
Country Status (3)
Country | Link |
---|---|
US (1) | US6247901B1 (de) |
EP (1) | EP0859151B1 (de) |
DE (2) | DE19706066A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020112664A1 (de) | 2020-05-11 | 2021-11-11 | OET GmbH | Hubkolbenkompressor zur Erzeugung ölfreier Druckluft |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19922511B4 (de) * | 1998-05-18 | 2004-07-08 | Lg Electronics Inc. | Ölumlaufstruktur für einen linearen Kompressor |
DE19847159C2 (de) * | 1998-10-13 | 2001-12-06 | Hans Unger | Kompressor zur Erzeugung ölfreier Druckluft |
TW506110B (en) * | 2000-05-04 | 2002-10-11 | United Microelectronics Corp | Electrostatic discharge protection circuit of silicon controller rectifying structure |
US6439857B1 (en) | 2001-03-12 | 2002-08-27 | Haldex Brake Corporation | Axial piston compressor |
KR20040022787A (ko) * | 2002-09-07 | 2004-03-18 | 엘지전자 주식회사 | 왕복동식 압축기의 가스 흡입장치 |
JP3855940B2 (ja) * | 2003-02-04 | 2006-12-13 | 株式会社豊田自動織機 | 圧縮機における潤滑構造 |
US20040253122A1 (en) * | 2003-06-10 | 2004-12-16 | Gary Grochowski | Endbell cylinder frame and housing for oil-free |
DE102004061224B4 (de) * | 2004-12-20 | 2010-09-09 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Kolben-Zylinder-Anordnung, insbesondere für einen Taumelscheibenverdichter |
DE102004061237A1 (de) * | 2004-12-20 | 2006-07-06 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Trockenlaufender Taumelscheibenverdichter mit einer beschichteten Taumelscheibe |
DE102004061233B3 (de) * | 2004-12-20 | 2006-07-13 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Trockenlaufender Verdichter, insbesondere Taumelscheibenverdichter, mit einer Kolbenstangenlagerung |
DE102004061235A1 (de) * | 2004-12-20 | 2006-07-06 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Trockenlaufender Taumelscheibenverdichter mit einer wälzgelagerten Taumelscheibe |
DE102004061236B3 (de) * | 2004-12-20 | 2006-08-31 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Kolben-Zylinder-Anordnung für einen Kolbenverdichter |
US7178450B1 (en) * | 2005-10-06 | 2007-02-20 | Delphi Technologies, Inc. | Sealing system for a compressor |
DE102007037687B3 (de) * | 2007-08-09 | 2008-09-25 | Voith Patent Gmbh | Lenkhelfpumpenantrieb |
JP3153200U (ja) * | 2009-06-15 | 2009-08-27 | 株式会社ヴァレオサーマルシステムズ | ピストン型圧縮機 |
US9856866B2 (en) | 2011-01-28 | 2018-01-02 | Wabtec Holding Corp. | Oil-free air compressor for rail vehicles |
CN103953526A (zh) * | 2014-05-05 | 2014-07-30 | 王敏 | 空压机活塞 |
DE102014209892A1 (de) * | 2014-05-23 | 2015-11-26 | Mahle International Gmbh | Axialkolbenmaschine |
DE102014010018A1 (de) * | 2014-07-08 | 2016-01-14 | Gea Bock Gmbh | Verdichter |
EP4112933A1 (de) * | 2021-06-30 | 2023-01-04 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Integrierte kühlung eines verdichters |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE661954C (de) | 1935-04-09 | 1938-06-30 | Sulzer Akt Ges Geb | Rasch laufende Kolbenkraftmaschine fuer Hoechstdruckheissdampf |
DE1083480B (de) | 1953-05-26 | 1960-06-15 | Sulzer Ag | Kolbenkompressor |
FR1571234A (de) | 1968-07-01 | 1969-06-13 | ||
US3577891A (en) * | 1968-08-21 | 1971-05-11 | Hitachi Ltd | Swash plate compressor |
DE1955447A1 (de) * | 1969-11-04 | 1971-05-13 | Vilter Manufacturing Corp | Kolbengaskompressor |
US3817660A (en) * | 1971-06-25 | 1974-06-18 | Ford Motor Co | Air conditioner compressor |
US3999894A (en) * | 1973-04-23 | 1976-12-28 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Compressor assembly |
US3961868A (en) * | 1974-02-21 | 1976-06-08 | Thomas Industries, Inc. | Air compressor |
US3945765A (en) * | 1974-04-15 | 1976-03-23 | Sankyo Electric Co., Ltd. | Refrigerant compressor |
DE2436407C3 (de) * | 1974-07-29 | 1980-09-11 | Bristel Compreesors, Inc., Bristel, Va. (V.St.A.) | Axialkolbenverdichter für eine Kälteanlage |
US4090430A (en) * | 1974-10-09 | 1978-05-23 | The Japan Steel Works | Swash plate type compressor |
JPS5781176A (en) * | 1980-11-06 | 1982-05-21 | Diesel Kiki Co Ltd | Rotary swash plate type compressor |
JPS59221480A (ja) * | 1983-05-31 | 1984-12-13 | Showa Seiki Kogyo Kk | 往復形オイルフリ−・ガス圧縮機 |
JPH0637874B2 (ja) | 1984-12-28 | 1994-05-18 | 株式会社豊田自動織機製作所 | 可変容量圧縮機 |
GB2175653A (en) | 1985-05-23 | 1986-12-03 | Song Wu | An air cooling and reciprocating type of air compressor without lubricant |
US5540560A (en) * | 1993-04-14 | 1996-07-30 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Compressor with rotation detecting mechanism |
US5362154A (en) * | 1993-08-16 | 1994-11-08 | Bernard Wiesen | Pivoting slipper pad bearing and crosshead mechanism |
US5492459A (en) * | 1994-11-14 | 1996-02-20 | General Motors Corporation | Swash plate compressor having a conically recessed valved piston |
DE19501220A1 (de) * | 1995-01-17 | 1996-07-18 | Knorr Bremse Systeme | Verdichter |
-
1997
- 1997-02-17 DE DE19706066A patent/DE19706066A1/de not_active Ceased
-
1998
- 1998-02-05 EP EP98101952A patent/EP0859151B1/de not_active Expired - Lifetime
- 1998-02-05 DE DE59808007T patent/DE59808007D1/de not_active Expired - Lifetime
- 1998-02-17 US US09/024,405 patent/US6247901B1/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020112664A1 (de) | 2020-05-11 | 2021-11-11 | OET GmbH | Hubkolbenkompressor zur Erzeugung ölfreier Druckluft |
WO2021228598A1 (de) | 2020-05-11 | 2021-11-18 | OET GmbH | Hubkolbenkompressor zur erzeugung ölfreier druckluft |
Also Published As
Publication number | Publication date |
---|---|
EP0859151A3 (de) | 1999-08-04 |
EP0859151A2 (de) | 1998-08-19 |
DE59808007D1 (de) | 2003-05-28 |
DE19706066A1 (de) | 1997-11-20 |
US6247901B1 (en) | 2001-06-19 |
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