EP0927305B1 - Kolbenpumpe - Google Patents
Kolbenpumpe Download PDFInfo
- Publication number
- EP0927305B1 EP0927305B1 EP98924218A EP98924218A EP0927305B1 EP 0927305 B1 EP0927305 B1 EP 0927305B1 EP 98924218 A EP98924218 A EP 98924218A EP 98924218 A EP98924218 A EP 98924218A EP 0927305 B1 EP0927305 B1 EP 0927305B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- pressure
- valve
- pressure delivery
- low
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/042—Hand tools for crimping
- H01R43/0427—Hand tools for crimping fluid actuated hand crimping tools
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- 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
- F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
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- 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
- F04B5/00—Machines or pumps with differential-surface pistons
Definitions
- the invention relates to a piston pump for delivery a fluid at low pressure and at higher pressure, being higher at low pressure in one pump cycle Delivery rate is given than at higher pressure, with one moved in a pump cylinder, under tension acted upon in its delivery end position of a pressure chamber Low pressure delivery piston, a high pressure delivery piston and an inlet and an outlet valve, further between the intake and exhaust valves a fluid delivery path is formed and the low pressure delivery piston against its bias into one The initial position of the conveyor must be moved back.
- Piston pumps of this type are used, for example, by hand or motor-driven hand tools. This is about to a state of the art according to the US patents 5,575,627, 5,195,354 and 2,688,231. This prior art relates to motor-driven hand tools for crimping cable lugs or cable connectors. Furthermore, the subject of the invention but also meaning with regard to scissors, about cable shears. This is about the German Utility model 94 16 535 and the unpublished to refer to German patent application 196 49 932. In addition, such pumps also used in other areas of technology. It For example, U.S. Patents 2,845,033 and 674,381.
- Two-stage pumps Numerous types of two-stage pumps are known. It is e.g. possible two different pump types to combine with each other and at the same time to drive, e.g. a gear pump for the low Pressure range and a piston pump for the high Print area. As soon as the required outlet pressure reaches the Working pressure of the low pressure pump exceeds their flow through a pressure relief valve in the tank returned.
- Two-stage piston pumps are common, both for the low as well as for the high pressure sub-piston pumps be used.
- One type is widespread the two pistons in the form of a pump tappet with two different diameters are united.
- the hydraulic effective area is at the low pressure part the circular area between the two diameters and for the high pressure piston it is the entire cross sectional area of the small diameter.
- Both Niederals even high pressure pumps each have one with the Tank connected inlet and one connected to pressure side Exhaust valve.
- the US-PS 4,492,106 relates to a lever-operated hand tool in an embodiment for pressing Cable shoes.
- a pump device which have a high pressure delivery piston and one Has low-pressure delivery piston.
- the low pressure delivery piston consists of a spring-supported pipe section with a tube plate, which is the piston crown forms.
- the low pressure delivery piston is replaced by a Continuation of the high pressure delivery piston against the spring force relocated, with hydraulic fluid from a reservoir is sucked in. Then moves the extension of the high pressure delivery piston back and the Low-pressure delivery piston delivers due to the pressure on it Spring the sucked hydraulic fluid in the work room.
- the funding ends as soon as the Pressure in the delivery chamber no longer from the spring force is to be overcome. Then works at the well-known Pump only the high pressure piston.
- the invention deals with the technical Problem, a piston pump to deliver a fluid to indicate at low pressure and at higher pressure, effective support with the simplest possible structure allows.
- the fluid delivery path is also passed through the low-pressure delivery piston, with a valve blocking the movement of the low-pressure delivery piston in the delivery direction.
- the valve in the low-pressure delivery piston is open, the pressure on both sides of the low-pressure delivery piston is practically the same.
- the embodiment advantageously has a few individual parts.
- valve in the low-pressure delivery piston In addition to the inlet and outlet valves, only the valve in the low-pressure delivery piston is required. The design is also simplified. There is only one pressure chamber for both the low pressure stage and the high pressure stage. Furthermore, it is provided that the movement of the low-pressure delivery piston takes place against its preload by the high-pressure delivery piston.
- the high-pressure delivery piston can in particular act directly on the low-pressure delivery piston.
- the high-pressure delivery piston preferably has a smaller cross-sectional area effective in terms of pumping than the low-pressure delivery piston.
- the ratio can be, for example, 4: 1 with respect to the area of the low-pressure delivery piston to the area of the high-pressure delivery piston. Practically good values are also achieved with ratios of 6 to 7: 1.
- the high-pressure delivery piston actuates the valve which is arranged in the low-pressure delivery piston and which blocks when the low-pressure delivery piston moves in the direction of delivery. Because the high-pressure delivery piston does not have to rest against the low-pressure delivery piston when the low-pressure delivery piston moves in the conveying direction, a valve which is very simple in construction, namely a plate valve, can be arranged in the low-pressure delivery piston in continuation of this idea.
- the valve in the low-pressure delivery piston further preferably has a style-like extension or an actuating end passing through the piston head of the low-pressure delivery piston. Via this actuation end, the valve can be actuated in the manner described by the high-pressure delivery piston.
- the preload of the low-pressure delivery piston in its delivery end position is advantageously achieved by a spring, more preferably by a helical spring (compression spring).
- a spring more preferably by a helical spring (compression spring).
- the spring acting on the low-pressure delivery piston biases the valve into the closed position.
- the fluid volume in the piston pump, ie on the inlet side of the low-pressure delivery piston and in the pressure chamber is as small as possible.
- the low-pressure delivery piston has a stylish extension on the back, for reducing the fluid volume between the inlet valve and the low-pressure delivery piston.
- a projection on the rear wall can also be provided in the cylinder receiving the low-pressure delivery piston or a combination of these measures.
- the pump cylinder has an operationally openable base. Due to the fact that the pump cylinder base can be opened operationally, it is possible, for example, to exchange or maintain the spring and / or the low-pressure delivery piston with the valve arranged therein in a simple manner.
- the pump cylinder base can be screw-fastened in the pump housing in further detail.
- the bottom of the pump cylinder is of a pot-like design with a screw-in thread on an outer edge of the pot. It is also possible, alternatively or alternatively, for the guide of the high-pressure delivery piston and possibly part of the adjoining piston crown to be screwed on and exchanged in this way.
- a piston pump 1 for delivering a fluid at low pressure and at higher pressure.
- the piston pump 1 can be used in a very wide variety of ways Find. With simple, manually operated pumps, the High pressure delivery piston operated by a hand lever and the ones already mentioned above motor-driven handheld devices just by a motor, like an electric motor. It is essential that first, without Load, an overdrive is desired, accordingly a high flow rate per stroke, and then under load higher pressures must be applied (at lower Delivery per stroke).
- the piston pump 1 has a pump cylinder 2, in which against the bias exerted by a spring 3 a low-pressure delivery piston 4 is movable.
- the Low-pressure delivery piston 4 also has a passage 5 for the hydraulic fluid, which is here is pumped.
- the fluid passageway 5 is through a valve 6 designed as a check valve is closed. The valve 6 locks when the low pressure delivery piston 4 moves in the conveying direction and can open when the low-pressure delivery piston 4 opposes each other its direction of conveyance moves.
- the low-pressure delivery piston 4 works in a pressure chamber 7.
- the valve 6 opens accordingly only when if the pressure in the pressure chamber 7 is less than the inlet side in an inflow space 8 of the low-pressure delivery piston 4th
- the piston pump 1 also has an inlet valve 9 and an outlet valve 10.
- the inlet valve 9 is in a line connection to a fluid storage room arranged.
- the outlet valve 10 is in a line connection to a work space not shown in FIG. 1 arranged (see also fluid storage space 26 and work space 27 in Fig. 5).
- a high-pressure delivery piston continues to operate in the pressure chamber 7 11, which is basically based on different, in Fig. 1 ways not shown be driven can. For example, one with an electric motor connected eccentric drive, by a manual drive or any other that generates reciprocating motions Drive.
- the freedom of movement of the high-pressure delivery piston 11 is by the broken line indicated.
- the high-pressure delivery piston 11 has a lower one effective cross section than the low pressure delivery piston 4.
- the ratio here is approximately 4: 1 (low-pressure delivery piston to high-pressure delivery pistons).
- Fig. 2 a is at low pressure operation, i.e. at low pressure, in the work area, the delivery end position of the low-pressure delivery piston 4 shown.
- the spring 3 is still practicing a bias, which is about in the embodiment corresponds to a value of 10 bar.
- the high pressure delivery piston 11 is at its farthest retracted position, in the embodiment it closes approximately flush with a (lower) Cylinder wall 12 (from the pressure chamber 7).
- 2c is the delivery stroke of the low-pressure delivery piston 4 shown. Because of the effect of the coil spring 3, the low-pressure delivery piston 4 after the high-pressure delivery piston 11 started its return movement has in the direction of its end-of-conveyance position Fig. 2a moves. The valve 6 is closed and on the inflow side due to resulting Negative pressure via the opening inlet valve 9 Fluid is sucked from the reservoir into the inflow space. At the same time, fluid from the pressure chamber 7 via the open exhaust valve 10 displaced in the work space. It can be seen that the amount of fluid displaced here depends on the cross-sectional ratio of the Low-pressure delivery piston 4 to the high-pressure delivery piston 11. It becomes all the more fluid in the low pressure stage conveyed into the work space via the outlet valve 10, the greater the - effective - cross-sectional ratio of the two pistons.
- 3a to 3c is a corresponding one Shown funding cycle, in which it is assumed that the pressure in the work space is greater than that Biasing the low-pressure delivery piston 4 in its Conveyor-end position.
- the pressure is said to be much greater than the initially mentioned pressure of approx. 10 bar. It is important that the pressure in the work area is greater than that by the coil spring (compression spring 3) in the upper, maximum preloaded position of the low-pressure delivery piston 4 is.
- Fig. 3a is the delivery end position of the high pressure piston 11 shown.
- the high-pressure delivery piston 11 is maximally moved into the pressure chamber 7.
- FIG. 3b shows a state in which the high-pressure delivery piston 11 on the return stroke located.
- the outlet valve 10 is closed because of Pressure in the pressure chamber 7 only by the spring 3rd is determined. For example, this can be a pressure between 10 and 20 bar. This pressure is essential smaller than the one to be assumed as high in this state Pressure in the work space.
- the falling pressure or the compensation caused by the high-pressure delivery piston moving out 11 resulting volume increase leads to a wake of the low-pressure delivery piston 4. This is at the same time through the opening inlet valve 9 fluid from the reservoir sucked into the inflow 8.
- the low pressure delivery piston 4 does not reach the end of delivery position 2a, but one for this in the conveying direction upstream position until an equalization of the volume share the moving out part of the high pressure delivery piston 11 is reached.
- 3c is a point in time in the delivery stroke of the high-pressure delivery piston 11 shown.
- the high pressure delivery piston 11 is not (yet) in contact with the low-pressure delivery piston 4. Due to the given Pressure increase, the inlet valve 9 is closed. On the other hand the outlet valve 10 is open because the pressure in the pressure chamber 7 due to the retracted high-pressure delivery piston 11 has increased so that the pressure in the work room.
- FIG. 4 is another embodiment the piston pump 1 shown.
- the position shown corresponds to Fig. 3a, this position itself here, however, on both a low-pressure and one High pressure cycle can relate.
- the low-pressure delivery piston 4 faces the rear here a stylish extension 13. In any case functionally.
- the stylish extension 13 is on one Plate 14, which is part of the valve 6 here, is formed.
- the valve 6 or in the specific embodiment the plate 14 also has a front Actuation extension 15 on.
- the stylish extension 13 leads to a minimal Fluid volume in inflow space 8. This is desirable to to achieve certain flow velocities there. Furthermore, in order to enter the (high pressure) delivery stroke as little recoil as possible due to the hydraulic fluid to given elasticity to reach. In general, however, it is essential that for the pump uses a fluid that is essentially is incompressible. There are common - oily ones - hydraulic fluids.
- the coil spring 3 is in the Embodiment of FIG. 4 surrounding the cylindrical Extension 13 arranged.
- the 4 the piston crown 31 as a screw-in part is trained. It has a side wall an external thread 33 with a corresponding Internal thread of the pump housing 32 cooperates. hereby is a simple exchange possible Ease of maintenance given.
- both the piston guide for the high pressure delivery piston 11 like the piston crown for the low-pressure delivery piston 4 are designed to be screwed in. It is preferred only the piston guide for the high-pressure delivery piston 11 trained to be screw-in.
- a flow path is formed is in which a usual check valve is arranged. This makes it possible, on the one hand still in the compressed position of the spring 3 keep the given volume as small as possible, on the other hand, in particular, such a flow path train that always relatively high flow rates are ensured. Is essential also that the construction is such that there are little or no dead spaces.
- FIG. 5 is a hand-held power tool with a piston pump according to the above illustrated embodiment Fig. 4 shown.
- the reduction gear 22 acts via a Shaft 23 on an eccentric 24, which in turn over a roller bearing 25 on the high-pressure delivery piston 11 acts.
- the Fluid storage space 26 fluid pumped into the working space 27 and thereby a working piston 28 against the Effect of a return spring 29 in its working end position emotional.
- the return movement of the working piston 28 takes place via the return spring 29 if - what here is not shown in detail - a drain valve of the work space 27 is open, through which the Fluid can then flow back into the storage space 26.
- the electric motor 21 is driven further Detail about a battery or an accumulator 30.
- Fig. 7 is the high pressure delivery piston 11 directly by a hand lever 34 actuated.
- the high-pressure piston 11 is for this in detail with a coaxially aligned connector 35 connected, which by means of a hook formation 36 a driving pin 37 of the hand lever 34 coupled is.
- the hand lever is independent of this Pivot pin 38 mounted on the housing 39.
- piston pump 1 behaves in the embodiment of Figure 7 in the same way as that Piston pump 1 of the previously described embodiments, so that reference is made to this.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Steroid Compounds (AREA)
Description
Die Vorspannung des Niederdruck-Förderkolbens in seine Förder-Endstellung ist vorteilhafterweise durch eine Feder, weiter bevorzugt durch eine Schraubenfeder (Druckfeder), erreicht. Im Hinblick auf das in dem Niederdruck-Förderkolben enthaltene Ventil kann insbesondere auch vorgesehen sein, daß die den Niederdruck-Förderkolben beaufschlagende Feder das Ventil in die Verschlußstellung vorspannt. Im weiteren ist es bevorzugt, daß das Fluidvolumen in der Kolbenpumpe, d.h. auf der Zulaufseite des Niederdruck-Förderkolbens und im Druckraum, möglichst gering ist. In einer Ausgestaltung ist hierfür vorgesehen, daß der Niederdruck-Förderkolben rückseitig einen stilartigen Fortsatz aufweist, zur Verkleinerung des Fluid-Volumens zwischen dem Einlaßventil und dem Niederdruck-Förderkolben. In gleicher Weise kann auch etwa ein rückwandseitiger Vorsprung in dem den Niederdruck-Förderkolben aufnehmenden Zylinder vorgesehen sein oder eine Kombinaton dieser Maßnahmen. In weiterer Ausgestaltung, zur Erreichung einer hohen Wartungsfreundlichkeit, ist auch vorgesehen, daß der Pumpzylinder einen betrieblich öffenbaren Boden aufweist. Dadurch, daß der Pumpzylinder-Boden betrieblich öffenbar ist, ist es bspw. in einfacher Weise möglich, die Feder und/oder den Niederdruck-Förderkolben mit darin angeordnetem Ventil auszutauschen oder zu warten. Hierzu kann in weiterer Einzelheit der Pumpzylinder-Boden in dem Pumpgehäuse schraubbefestigt sein. Es empfiehlt sich hierzu auch, daß der Pumpzylinder-Boden insgesamt topfartig ausgebildet ist, mit einem Einschraub-Gewinde an einer Topfrand-Außenwand. Es ist kombinativ oder alternativ hierzu auch möglich, daß die Führung des Hochdruck-Förderkolbens und ggf. ein Teil des angerenzenden Kolbenbodens in dieser Weise engeschraubt und austauschbar ist.
- Fig. 1
- eine schematische Querschnittsansicht einer Kolbenpumpe;
- Fig. 2
- in den Darstellung a, b und c den Ablauf eines Förderzyklus bei Niederdruck;
- Fig. 3
- in den Darstellung a, b und c den Ablauf eines Förderzyklus bei Hochdruck;
- Fig. 4
- die schematische Ansicht einer Kolbenpumpe einer zweiten Ausführungsform;
- Fig. 5
- eine schematische Querschnittsansicht eines motorbetriebenen Handgerätes mit einer Kolbenpumpe gemäß Fig. 4;
- Fig. 6
- eine gegenüber Fig. 4 abgewandelte Ausführungsform; und
- Fig. 7
- eine weitere Ausführungsform, bei welcher die Betätigung mit einem Handhebel erfolgt.
Claims (13)
- Kolbenpumpe (1) zur Förderung eines Fluids bei niederem Druck und bei höheren Druck, wobei bei niederem Druck in einem Pumpzyklus eine höhere Fördermenge gegeben ist als bei höherem Druck, mit einem in einem Pumpzylinder (2) bewegten, unter Vorspannung in seine Förder-Endstellung einen Druckraum (7) beaufschlagenden Niederdruck-Förderkolben (4), einem Hochdruck-Förderkolben (11), einem Einlaß- und einem Auslaßventil (9, 10), wobei weiter zwischen dem Einlaß- und dem Auslaßventil (9, 10) ein Fluid-Förderweg (5) ausgebildet ist und der Niederdruck-Förderkolben (4) gegen seine Vorspannung in eine Förder-Anfangsstellung zurückzubewegen ist, dadurch gekennzeichnet, daß der Fluid-Förderweg (5) den Niederdruck-Förderkolben (4) durchsetzt, daß in dem Niederdruck-Förderkolben (4) ein bei Bewegung in die Förder-Anfangsstellung sperrendes Ventil (6) angeordnet ist, daß der Hochdruck-Förderkolben (11) und der Niederdruck-Förderkolben (4) in einen gemeinsamen Druckraum (7) arbeiten und daß der Hochdruck-Förderkolben (11) den Niederdruck-Förderkolben (4) entgegen seiner Vorspannung bewegt.
- Kolbenpumpe nach Anspruch 1, dadurch gekennzeichnet, daß der Hochdruck-Förderkolben (11) einen kleineren Querschnitt aufweist als der Niederdruck-Förderkolben (4).
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Ventil (6) ein druckbetätigtes Rückschlagventil ist.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Ventil (6) ein zwangsgesteuertes Ventil ist.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Hochdruck-Förderkolben (11) das Ventil (6) betätigt.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Ventil (6) als Plattenventil ausgebildet ist.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Ventil (6) ein den Kolbenboden (17) des Niederdruck-Förderkolbens (4) durchsetzendes Betätigungsende (15) aufweist.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Vorspannung durch eine Feder (3) erzielt ist.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Feder (3) das Ventil (6) in die Verschlußstellung vorspannt.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Niederdruck-Förderkolben (4) rückseitig einen stielartigen Fortsatz (13) aufweist, zur Verkleinerung des Fluid-Strömungsweges zwischen dem Einlaßventil (9) und dem Niederdruck-Förderkolben (4).
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Pumpzylinder (2) einen betrieblich öffenbaren Pumpzylinder-Boden (31) aufweist.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Pumpzylinder-Boden (31) in einem Pumpgehäuse (32) schraubbefestigt ist.
- Kolbenpumpe nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Pumpzylinder-Boden (31) topfartig ausgebildet ist, mit einem Einschraub-Gewinde (33) an einer Topfrandaußenwand.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19731054 | 1997-07-19 | ||
DE19731054 | 1997-07-19 | ||
DE19743747 | 1997-10-02 | ||
DE19743747A DE19743747B4 (de) | 1997-07-19 | 1997-10-02 | Kolbenpumpe |
PCT/EP1998/002474 WO1999004165A1 (de) | 1997-07-19 | 1998-04-25 | Kolbenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0927305A1 EP0927305A1 (de) | 1999-07-07 |
EP0927305B1 true EP0927305B1 (de) | 2003-01-15 |
Family
ID=26038426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98924218A Expired - Lifetime EP0927305B1 (de) | 1997-07-19 | 1998-04-25 | Kolbenpumpe |
Country Status (9)
Country | Link |
---|---|
US (1) | US6206663B1 (de) |
EP (1) | EP0927305B1 (de) |
JP (1) | JP4138897B2 (de) |
AT (1) | ATE231217T1 (de) |
AU (1) | AU7649598A (de) |
DK (1) | DK0927305T3 (de) |
ES (1) | ES2187973T3 (de) |
TW (1) | TW401484B (de) |
WO (1) | WO1999004165A1 (de) |
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DE102012109255A1 (de) | 2012-09-28 | 2014-04-03 | Gustav Klauke Gmbh | Handarbeitsgerät, Hand-Aufweitgerät, hydraulische Kolben-/Zylinderanordnung und Verfahren zum Betreiben eines Handarbeitsgerätes |
EP3091230A1 (de) * | 2015-04-23 | 2016-11-09 | Robert Bosch Gmbh | Hydrostatische kolbenmaschine |
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WO2018109521A1 (fr) * | 2016-12-12 | 2018-06-21 | Arkling Limited | Dispositif de transfert de pression pour une installation de traitement de fluide par osmose inverse |
DE102018103610B3 (de) * | 2018-02-19 | 2019-02-14 | Hanon Systems | Vorrichtung zum Dämpfen von Druckpulsationen für einen Verdichter eines gasförmigen Fluids |
CN108412751B (zh) * | 2018-03-14 | 2024-02-06 | 宁波合力机泵股份有限公司 | 一种反向吸排自平衡型增压泵的液力端 |
ES2774427B2 (es) * | 2019-01-21 | 2022-03-15 | Samoa Ind S A | Dispositivo de arranque a baja presion para bombas neumaticas |
TWI717112B (zh) * | 2019-11-19 | 2021-01-21 | 科頡工業股份有限公司 | 活塞泵及具有該活塞泵的夾持裝置 |
CN112901474B (zh) * | 2019-11-19 | 2023-03-31 | 科颉工业股份有限公司 | 活塞泵及具有该活塞泵的夹持装置 |
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- 1998-04-25 AU AU76495/98A patent/AU7649598A/en not_active Abandoned
- 1998-04-25 JP JP50619899A patent/JP4138897B2/ja not_active Expired - Lifetime
- 1998-04-25 EP EP98924218A patent/EP0927305B1/de not_active Expired - Lifetime
- 1998-04-25 DK DK98924218T patent/DK0927305T3/da active
- 1998-04-25 WO PCT/EP1998/002474 patent/WO1999004165A1/de active IP Right Grant
- 1998-04-25 ES ES98924218T patent/ES2187973T3/es not_active Expired - Lifetime
- 1998-04-25 US US09/269,093 patent/US6206663B1/en not_active Expired - Lifetime
- 1998-04-25 AT AT98924218T patent/ATE231217T1/de active
- 1998-07-10 TW TW087111210A patent/TW401484B/zh not_active IP Right Cessation
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008024018A1 (de) | 2007-05-16 | 2008-11-20 | Gustav Klauke Gmbh | Verfahren zum Betreiben eines motorisch betätigbaren Handverpressgerätes und Handverpressgerät |
EP2722133A2 (de) | 2007-05-16 | 2014-04-23 | Gustav Klauke GmbH | Verfahren zum Betreiben eines motorisch betätigten Handverpressgerätes und Handverpressgerät |
EP3243604A1 (de) | 2007-05-16 | 2017-11-15 | Gustav Klauke GmbH | Motorisch betriebenes hand-verpressgerät und verfahren zum betreiben eines motorisch betätigten hand-verpressgerätes |
DE102008024018B4 (de) | 2007-05-16 | 2024-04-18 | Gustav Klauke Gmbh | Verfahren zum Betreiben eines motorisch betätigten Handverpressgerätes und Handverpressgerät |
DE102012109255A1 (de) | 2012-09-28 | 2014-04-03 | Gustav Klauke Gmbh | Handarbeitsgerät, Hand-Aufweitgerät, hydraulische Kolben-/Zylinderanordnung und Verfahren zum Betreiben eines Handarbeitsgerätes |
WO2014049035A1 (de) | 2012-09-28 | 2014-04-03 | Gustav Klauke Gmbh | Handarbeitsgerät, hand-aufweitgerät, hydraulische kolben-/zylinder-anordnung und verfahren zum betreiben eines handarbeitsgerätes |
EP3091230A1 (de) * | 2015-04-23 | 2016-11-09 | Robert Bosch Gmbh | Hydrostatische kolbenmaschine |
Also Published As
Publication number | Publication date |
---|---|
JP4138897B2 (ja) | 2008-08-27 |
JP2001504909A (ja) | 2001-04-10 |
ATE231217T1 (de) | 2003-02-15 |
DK0927305T3 (da) | 2003-05-05 |
AU7649598A (en) | 1999-02-10 |
EP0927305A1 (de) | 1999-07-07 |
ES2187973T3 (es) | 2003-06-16 |
TW401484B (en) | 2000-08-11 |
WO1999004165A1 (de) | 1999-01-28 |
US6206663B1 (en) | 2001-03-27 |
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