CN104428530A - Axial piston motor - Google Patents
Axial piston motor Download PDFInfo
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- CN104428530A CN104428530A CN201480001707.2A CN201480001707A CN104428530A CN 104428530 A CN104428530 A CN 104428530A CN 201480001707 A CN201480001707 A CN 201480001707A CN 104428530 A CN104428530 A CN 104428530A
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Classifications
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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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
- Reciprocating Pumps (AREA)
Abstract
According to the present invention, an inclined rotation control mechanism (8) of an axial piston motor controls the inclined rotation angle of a swash plate (7). In this inclined rotation control mechanism (8), the internal space in one cylinder (81) is divided by one piston (82) into a first chamber (811) and a second chamber (812). The inclined rotation control mechanism (8) can thereby be made smaller and lighter, and the number of components can be reduced.
Description
Technical field
This invention relates to such as the axial piston motor of construction implement, industrial machinery etc.
Background technique
In the past, as axial piston motor, there is the axial piston motor recorded in Japanese Unexamined Patent Publication 2010-168974 publication (patent document 1).This axial piston motor comprises: live axle; Be fixed on the cylinder block of this live axle; Embed multiple steam-cylinder pistons of this cylinder block; For supporting the swash plate of the plurality of steam-cylinder piston; For controlling the deflection control mechanism of the deflection angle of this swash plate.
Above-mentioned deflection control mechanism has two separate cylinders and embeds the piston rod of these two cylinders respectively.A cylinder and piston rod and another cylinder and piston rod are configured in both sides relative to above-mentioned live axle.The piston rod of both sides links with swash plate respectively, by making respective piston rod stretch, thus swash plate is deflected.
Patent document 1: Japanese Unexamined Patent Publication 2010-168974 publication
Summary of the invention
the problem that invention will solve
But, in above-mentioned axial piston motor in the past, there are the following problems: above-mentioned deflection control mechanism has two cylinders and two piston rods, and therefore deflection control mechanism maximizes, the weight of deflection control mechanism also increases, and the number of components quantitative change of deflection control mechanism is many.
Therefore, problem of the present invention is, provides the axial piston motor that miniaturization, lightweight and the number of spare parts that can realize deflection control mechanism reduce.
for the scheme of dealing with problems
In order to solve above-mentioned problem, the feature of axial piston motor of the present invention is, it comprises:
Housing;
Live axle, it is rotatably installed on above-mentioned housing;
Cylinder block, it is fixed on above-mentioned live axle, and has the multiple cylinder holes in circumferential array;
Multiple steam-cylinder piston, it movably embeds above-mentioned multiple cylinder holes;
Swash plate, the face that its utilization can deflect relative to above-mentioned live axle is to support above-mentioned multiple steam-cylinder piston; And
Deflection control mechanism, it is for controlling the deflection angle of above-mentioned swash plate relative to above-mentioned live axle,
Above-mentioned deflection control mechanism comprises:
Cylinder;
Piston, it is configured in said cylinder, will be separated into the first Room and the second Room in this cylinder;
Bar, above-mentioned piston and above-mentioned swash plate link up by it; And
Switching part, it carries out the switching of fluid-phase for the discrepancy of above-mentioned first Room in said cylinder and above-mentioned second Room.
According to axial piston motor of the present invention, make above-mentioned first Room in fluid discrepancy said cylinder and above-mentioned second Room, thus piston moves in cylinder, can adjust the deflection angle of swash plate.
Further, in above-mentioned deflection control mechanism, utilize a piston that the inner space of a cylinder is divided into the first Room and the second Room, thus the minimizing of the miniaturization of deflection control mechanism, lightweight and number of spare parts can be realized.
Further, in the axial piston motor of a mode of execution, above-mentioned deflection control mechanism has the Traffic control system portion for adjusting the upper and lower bound of the stroke of above-mentioned piston in said cylinder.
According to the axial piston motor of this mode of execution, the upper and lower bound of above-mentioned Traffic control system portion to the stroke of above-mentioned piston adjusts.Thereby, it is possible to utilize Traffic control system portion to adjust the upper and lower bound (namely, the upper and lower bound of motor capacity) of the deflection angle of swash plate simply.
Further, in the axial piston motor of a mode of execution,
Above-mentioned piston has:
In the face of the first compression face of above-mentioned first Room; And
In the face of the second compression face of above-mentioned second Room,
The area of above-mentioned first compression face is different with the area of above-mentioned second compression face.
Here, so-called first compression face, the second compression face refer to the face of pitching (such as, orthogonal) with the axes intersect of cylinder.
According to the axial piston motor of this mode of execution, in above-mentioned piston, the area of above-mentioned first compression face is different with the area of above-mentioned second compression face.Thus, when the area of area ratio second compression face of the first compression face is little, when fluid is flowed in the first Room and the second Room, piston moves to the first side, Room, and on the other hand, when only making fluid flow in the first chamber, piston moves to the second side, Room.So, make fluid passage be connected to the first Room and the second Room, make only to become to the fluid passage of the second Room the switching can carrying out connected sum disconnection, the structure that fluid circuit becomes simple can be made.
the effect of invention
According to axial piston motor of the present invention, in above-mentioned deflection control mechanism, utilize a piston that the inner space of a cylinder is divided into the first Room and the second Room, thus the miniaturization of deflection control mechanism, lightweight and number of spare parts can be realized reduce.
Accompanying drawing explanation
Fig. 1 is the sectional view of the axial cylinder piston motor representing one embodiment of the present invention.
Fig. 2 is the amplification view of deflection control mechanism.
Fig. 3 is the circuit diagram of said motor.
Embodiment
Below, the present invention is described in detail to utilize illustrated mode of execution.
Fig. 1 is the sectional view of the axial piston motor representing one embodiment of the present invention.As shown in Figure 1, this motor comprises: housing 1; Live axle 3, it is rotatably installed on this housing 1 by bearing 2; Cylinder block 4, it is fixed on this live axle 3.
Said cylinder body 4 has the multiple cylinder holes 40 in circumferential array.Multiple steam-cylinder piston 5 movably embeds the plurality of cylinder holes 40.
The tip portion of said cylinder piston 5 is formed as spherical, and links with piston shoes (Japanese: シ ュ ー) 6.These piston shoes 6 are supported by the swash plate 7 of locating relative to housing 1.This swash plate 7 has the face that can deflect relative to above-mentioned live axle 3, utilizes the above-mentioned multiple steam-cylinder piston 5 of this surface bearing.This swash plate 7 deflects by deflection control mechanism 8, and controls its deflection angle relative to above-mentioned live axle 3 by control mechanism 8.
Above-mentioned housing 1 is provided with the first primary path 11 and the second primary path 12, and this first primary path 11 is connected with above-mentioned cylinder holes 40 with the second primary path 12, and relative to above-mentioned cylinder holes 40 carry out working oil enter row.
At the internal surface of above-mentioned housing 1, with the end face of cylinder block 4, valve block 9 is relatively installed.This valve block 9 has the first hole portion 91 of arc-shaped and the second hole portion of hole portion 92, first 91 and the second hole portion 92 and is formed symmetrically.
In the bottom of above-mentioned each cylinder holes 40, be formed with the hole portion 40a entering row for carrying out working oil to the inside of cylinder holes 40.The end face of said cylinder body 4 contacts with above-mentioned valve block 9.
The hole portion 40a of above-mentioned cylinder holes 40 of above-mentioned first primary path 11 of above-mentioned housing 1, the above-mentioned first hole portion 91 of above-mentioned valve block 9 and regulation can be communicated with.The hole portion 40a of above-mentioned cylinder holes 40 of above-mentioned second primary path 12 of above-mentioned housing 1, the above-mentioned second hole portion 92 of above-mentioned valve block 9 and regulation can be communicated with.
Further, when above-mentioned first primary path 11 supplies working oil, this working oil flows into the above-mentioned cylinder holes 40 of regulation via above-mentioned first hole portion 91, makes said cylinder piston 5 to-and-fro motion, and said cylinder body 4 and above-mentioned live axle 3 are rotated to a direction.Afterwards, the working oil in cylinder holes 40 is discharged from above-mentioned second primary path 12 via above-mentioned second hole portion 92.Pressure in second primary path 12 of the pressure ratio discharge side in the first primary path 11 of supply side is high.
On the other hand, when above-mentioned second primary path 12 supplies working oil, said cylinder body 4 and above-mentioned live axle 3 rotate to other direction.Afterwards, the working oil in cylinder holes 40 is discharged from above-mentioned first primary path 11.
Above-mentioned deflection control mechanism 8 has: cylinder 81; Piston 82, it is configured in said cylinder 81; Bar 83, above-mentioned piston 82 and above-mentioned swash plate 7 link up by it.Cylinder 81 is formed as a part for housing 1.Piston 82 is sleeve-shaped.Bar 83 is installed on this piston 82 inside to insert shape.
Said cylinder 81, above-mentioned piston 82 and above-mentioned bar 83 are configured to same heart shaped.Piston 82 can to-and-fro motion in cylinder 81.Bar 83 can along the axis to-and-fro motion of cylinder 81 together with piston 82.
Above-mentioned piston 82 is when in figure, right side is mobile, and the angle of inclination of swash plate 7 becomes large, and piston 82 is when in figure, left side is mobile, and the angle of inclination of swash plate 7 diminishes.Be called the CLV ceiling limit value of the stroke of piston 82 when piston 82 is moved to the rightmost side in figure, when piston 82 is moved to the leftmost side in figure, be called the lower limit of the stroke of piston 82.
As shown in Figure 2, above-mentioned piston 82 has a portion 820a and is installed on the lip part 820b of one end of this 820a.Cylinder portion 820a movably moves in cylinder 81.Lip part 820b is configured in cylinder 81.Lip part 820b will be separated into the first Room 811 and the second Room 812 in cylinder 81.Namely, the space of be closed in cylinder 81 is divided into the first Room 811 and the second Room 812 by lip part 820b.First Room 811 is positioned at than the position of the second Room 812 by swash plate 7 side.Cylinder 81 is provided with the first path 81a be communicated with the first Room 811 and alternate path 81b be communicated with the second Room 812.
The lip part 820b of above-mentioned piston 82 has towards the first compression face 821 of above-mentioned first Room 811 and the second compression face 822 towards above-mentioned second Room 812.The axis vertical take-off of the first compression face 821, second compression face 822 and cylinder 81.The area of area ratio second compression face 822 of the first compression face 821 is little.
Above-mentioned deflection control mechanism 8 has the Traffic control system portion 20 of the upper and lower bound for adjusting the stroke of piston 82 in cylinder 81.Traffic control system portion 20 has the CLV ceiling limit value adjustment axle 21 of the CLV ceiling limit value of the stroke for adjusting piston 82 and the lower limit adjustment axle 22 for the lower limit of the stroke that adjusts piston 82.
Above-mentioned CLV ceiling limit value adjustment axle 21 has the screw spindle part 211 of tubular and is installed on the lip part 212 of one end of this screw spindle part 211.
Above-mentioned screw spindle part 211 runs through the cap 23 of the end of the axis being installed in cylinder 81.Be provided with outside thread at the outer circumferential face of screw spindle part 211, be provided with internal thread at the inner peripheral surface of cap 23, screw spindle part 211 and cap 23 are screwed.Screw spindle part 211 is screwed nut 24.
Above-mentioned lip part 212 is configured in cylinder 81 (the second Room 812).O shape ring 26 is embedded with at the outer circumferential face of lip part 212.The end face 212a in the axially outside of lip part 212 can abut against with the second compression face 822 of piston 82.
Further, by making above-mentioned screw spindle part 211 screw togather advance and retreat in cap 23, can adjust the position of end face 212a in cylinder 81 of above-mentioned lip part 212.Namely, CLV ceiling limit value adjustment axle 21 can adjust the CLV ceiling limit value of the stroke of piston 82.
Above-mentioned lower limit adjustment axle 22 has screw spindle part 221, be installed on the leading axle portion 222 of one end of this screw spindle part 221 and be installed on the lip part 223 of one end in this leading axle portion 222.
Above-mentioned screw spindle part 221 through CLV ceiling limit value adjustment axle 21.Be provided with outside thread at the outer circumferential face of screw spindle part 221, be provided with internal thread at the inner peripheral surface of the screw spindle part 211 of the tubular of CLV ceiling limit value adjustment axle 21, screw spindle part 221 and tubular screw spindle part 211 are screwed.Screw spindle part 221 has been screwed nut 25.
Above-mentioned leading axle portion 222 movably inserts the inside of piston 82.Above-mentioned lip part 223 is configured in piston 82.O shape ring 27 is embedded with at the outer circumferential face in leading axle portion 222.The end face 223a of the axially inner side of lip part 223 can abut against with the interior edge face 82a in piston 82.
Further, by making above-mentioned screw spindle part 221 screw togather advance and retreat in tubular screw spindle part 211, the position of interior edge face 223a in cylinder 81 of above-mentioned lip part 223 can be adjusted.Namely, lower limit adjustment axle 22 can adjust the lower limit of the stroke of piston 82.
Fig. 3 represents the circuit diagram of said motor.As shown in Figure 3, above-mentioned first primary path 11 and above-mentioned second primary path 12 is connected with in the motor part 50 be made up of above-mentioned live axle 3, said cylinder body 4, said cylinder piston 5 and above-mentioned swash plate 7.Be connected with the first path 81a of cylinder 81 from the first secondary path 13 of the first primary path 11 branch.Second primary path 12 is connected with the second secondary path 14.
Be connected with switching part 84 from the first valve path 31 of above-mentioned first secondary path 13 branch.Switching part 84 is connected with the alternate path 81b of cylinder 81 via the second valve path 32.
In above-mentioned first secondary path 13, the position of upstream side (the first primary path 11 side) is leaned on to be provided with safety check at the tie point than the second secondary path 14 and the first valve path 31.Above-mentioned second secondary path 14 is provided with safety check.
Above-mentioned switching part 84 is such as solenoid valve, has the first hole portion P1, the second hole portion P2, the 3rd hole portion P3.First hole portion P1 is connected with above-mentioned first valve path 31, and the second hole portion P2 is connected with fuel tank 33, and the 3rd hole portion P3 is connected with above-mentioned second valve path 32.
Above-mentioned switching part 84 pairs of working oils switch relative to the discrepancy of the first Room 811 in cylinder 81 and the second Room 812.Namely, switching part 84 has primary importance S1 and second place S2.When being in primary importance S1, the 3rd hole portion P3 is connected with the first hole portion P1, thus the second Room 812 is communicated with the first valve path 31.When being in second place S2, the 3rd hole portion P3 is connected with the second hole portion P2, thus the second Room 812 is communicated with fuel tank 33.In addition, the first Room 811 is communicated with the first primary path 11 via one-way valve.
Next, the adjustment of the deflection angle of above-mentioned swash plate 7 is described.Here, suppose that supply the working oil of high pressure to the first primary path 11, discharge the working oil of low pressure from the second primary path 12.
When making the deflection angle of above-mentioned swash plate 7 become large, switching part 84 is made to be in second place S2.Thus, the second Room 812 is connected with fuel tank 33, and the first Room 811 is connected with the first secondary path 13.Thus the working oil of the high pressure of the first primary path 11 flows into the first Room 811 via the first secondary path 13, piston 82 is mobile to the second side, Room 812 (in figure right side).The working oil of the second Room 812 is discharged to fuel tank 33.Its result, the deflection angle of swash plate 7 becomes large.
When making the deflection angle of above-mentioned swash plate 7 diminish, switching part 84 is made to be in primary importance S1.Thus, the first Room 811 is connected with the first secondary path 13 with the second Room 812.Thus the working oil of the high pressure of the first primary path 11 flows into the first Room 811 via the first secondary path 13, and flows into the second Room 812 via the first valve path 31.Now, because the area of area ratio second compression face 822 of the first compression face 821 is little, therefore under the effect of differential pressure, piston 82 is mobile to the first side, Room 811 (in figure left side).Its result, the deflection angle of swash plate 7 diminishes.
In addition, the working oil supplying high pressure to above-mentioned second primary path 12, discharge low pressure from above-mentioned first primary path 11 work oil condition under, the working oil of the high pressure of the second primary path 12 flows into the first secondary path 13 and the first valve path 31 via the second secondary path 14.
According to the axial piston motor of above-mentioned formation, make above-mentioned first Room 811 in working oil discrepancy said cylinder 81 and above-mentioned second Room 812, thus piston 82 is mobile in cylinder 81, can adjust the deflection angle of swash plate 7.
Further, in above-mentioned deflection control mechanism 8, with a piston 82, the inner space of a cylinder 81 is divided into the first Room 811 and the second Room 812, thus the minimizing of the miniaturization of deflection control mechanism 8, lightweight and number of spare parts can be realized.
Further, above-mentioned Traffic control system portion 20 adjusts the upper and lower bound of the stroke of above-mentioned piston 82.Thereby, it is possible to utilize Traffic control system portion 20 to adjust the upper and lower bound (namely, the upper and lower bound of motor capacity) of the deflection angle of swash plate 7 simply.
Further, the area of above-mentioned second compression face 822 of the area ratio of above-mentioned first compression face 821 is little.Thus, when making working oil flow into the first Room 811 and the second Room 812, piston 82 moves to the first side, Room 811, and on the other hand, when only making working oil flow into the first Room 811, piston 82 moves to the second side, Room 812.Like this, the first Room 811 is connected with oil pressure path with the second Room 812, only makes the oil pressure path to the second Room 812 be the switching can carrying out connected sum disconnection, oil hydraulic circuit can be made to become simple structure.
In addition, this invention is not defined as above-mentioned mode of execution.The quantity increase and decrease of steam-cylinder piston and cylinder holes freely.
In above-mentioned mode of execution, the axis vertical take-off of the first compression face of piston, the second compression face and cylinder, as long as but pitch with the axes intersect of cylinder.
In above-mentioned mode of execution, the area of area ratio second compression face of the first compression face is little, but the area of the first compression face also can be larger than the area of the second compression face.
In above-mentioned mode of execution, be connected when making the first Room of cylinder and oil pressure path normal, but also the oil pressure path of this first Room of subtend can carry out the switching of connected sum disconnection.
In above-mentioned mode of execution, be provided with Traffic control system portion, but also can omit Traffic control system portion.Further, in above-mentioned mode of execution, the area of the first compression face is different from the area of the second compression face, but the area of the first compression face also can be made identical with the area of the second compression face.In this situation, respectively the first Room and the second Room are carried out to inflow and the discharge of working oil.
description of reference numerals
1 housing
3 live axles
4 cylinder blocks
5 steam-cylinder pistons
7 swash plates
8 deflection control mechanism
9 valve blocks
11 first primary paths
12 second primary paths
13 first secondary paths
14 second secondary paths
31 first valve paths
32 second valve paths
20 Traffic control system portions
21 CLV ceiling limit value adjustment axles
211 screw spindle part
212 lip parts
22 lower limit adjustment axles
221 screw spindle part
222 leading axle portions
223 lip parts
23 caps
40 cylinder holes
81 cylinders
Room 811 first
Room 812 second
82 pistons
821 first compression faces
822 second compression faces
83 bars
84 switching parts
Claims (3)
1. an axial piston motor, is characterized in that, this axial piston motor comprises:
Housing;
Live axle, it is rotatably installed on above-mentioned housing;
Cylinder block, it is fixed on above-mentioned live axle, and has the multiple cylinder holes in circumferential array;
Multiple steam-cylinder piston, it movably embeds above-mentioned multiple cylinder holes;
Swash plate, the above-mentioned multiple steam-cylinder piston of the surface bearing that its utilization can deflect relative to above-mentioned live axle;
Deflection control mechanism, it is for controlling the deflection angle of above-mentioned swash plate relative to above-mentioned live axle, and above-mentioned deflection control mechanism has:
Cylinder;
Piston, it is configured in said cylinder, will be separated into the first Room and the second Room in this cylinder;
Bar, above-mentioned piston and above-mentioned swash plate link up by it;
Switching part, it carries out the switching of fluid-phase for the discrepancy of above-mentioned first Room in said cylinder and above-mentioned second Room.
2. axial piston motor according to claim 1, is characterized in that,
Above-mentioned deflection control mechanism has Traffic control system portion, and the trip adjustment part is for adjusting the upper and lower bound of the stroke of above-mentioned piston in said cylinder.
3. axial piston motor according to claim 1 and 2, is characterized in that,
Above-mentioned piston has towards the first compression face of above-mentioned first Room and the second compression face towards above-mentioned second Room,
The area of above-mentioned first compression face is different from the area of above-mentioned second compression face.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-050677 | 2013-03-13 | ||
| JP2013050677A JP6080626B2 (en) | 2013-03-13 | 2013-03-13 | Axial piston motor |
| PCT/JP2014/054064 WO2014141849A1 (en) | 2013-03-13 | 2014-02-20 | Axial piston motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104428530A true CN104428530A (en) | 2015-03-18 |
Family
ID=51536525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480001707.2A Pending CN104428530A (en) | 2013-03-13 | 2014-02-20 | Axial piston motor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6080626B2 (en) |
| KR (1) | KR101633693B1 (en) |
| CN (1) | CN104428530A (en) |
| WO (1) | WO2014141849A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5977086A (en) * | 1982-10-22 | 1984-05-02 | Mitsubishi Heavy Ind Ltd | Swash-plate type axial piston pump and motor |
| US4541450A (en) * | 1981-06-03 | 1985-09-17 | Dan Bron | Liquid proportioning system |
| US5407102A (en) * | 1994-02-15 | 1995-04-18 | Freudinger; Mark J. | Apparatus for dispensing a quantity of flowable material |
| US5415249A (en) * | 1990-12-19 | 1995-05-16 | Davy Mckee (Sheffield) Limited | Air/oil mixture as a lubricant |
| US20010035038A1 (en) * | 2000-05-19 | 2001-11-01 | Ose Paul N. | Modular system for expanding and reducing tubing |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3139006A (en) * | 1961-09-11 | 1964-06-30 | Budzich Tadeusz | Constant speed hydraulic drive |
| JPS4820802B1 (en) * | 1970-01-23 | 1973-06-23 | ||
| JPS5527556A (en) * | 1978-08-18 | 1980-02-27 | Honda Motor Co Ltd | Vertical positioning device for motor swash in oil pressure speed change gear |
| US4487109A (en) * | 1982-03-30 | 1984-12-11 | Sundstrand Corporation | Electro-hydraulic control system for a power drive unit |
| JPH0421022Y2 (en) * | 1987-05-23 | 1992-05-13 | ||
| US6443705B1 (en) * | 2000-11-28 | 2002-09-03 | Ingersoll-Rand Company | Direct drive variable displacement pump |
| JP5416419B2 (en) | 2009-01-21 | 2014-02-12 | 東芝機械株式会社 | Construction machinery |
| US20130000481A1 (en) * | 2010-11-16 | 2013-01-03 | Kawasaki Jukogyo Kabushiki Kaisha | Cooling structure of cylinder block and swash plate type liquid-pressure apparatus including same |
-
2013
- 2013-03-13 JP JP2013050677A patent/JP6080626B2/en active Active
-
2014
- 2014-02-20 KR KR1020147030179A patent/KR101633693B1/en active IP Right Grant
- 2014-02-20 WO PCT/JP2014/054064 patent/WO2014141849A1/en active Application Filing
- 2014-02-20 CN CN201480001707.2A patent/CN104428530A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541450A (en) * | 1981-06-03 | 1985-09-17 | Dan Bron | Liquid proportioning system |
| JPS5977086A (en) * | 1982-10-22 | 1984-05-02 | Mitsubishi Heavy Ind Ltd | Swash-plate type axial piston pump and motor |
| US5415249A (en) * | 1990-12-19 | 1995-05-16 | Davy Mckee (Sheffield) Limited | Air/oil mixture as a lubricant |
| US5407102A (en) * | 1994-02-15 | 1995-04-18 | Freudinger; Mark J. | Apparatus for dispensing a quantity of flowable material |
| US20010035038A1 (en) * | 2000-05-19 | 2001-11-01 | Ose Paul N. | Modular system for expanding and reducing tubing |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140139106A (en) | 2014-12-04 |
| JP2014177872A (en) | 2014-09-25 |
| JP6080626B2 (en) | 2017-02-15 |
| WO2014141849A1 (en) | 2014-09-18 |
| KR101633693B1 (en) | 2016-06-27 |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |