CN103991816A - Jack used on various grounds - Google Patents
Jack used on various grounds Download PDFInfo
- Publication number
- CN103991816A CN103991816A CN201410237224.4A CN201410237224A CN103991816A CN 103991816 A CN103991816 A CN 103991816A CN 201410237224 A CN201410237224 A CN 201410237224A CN 103991816 A CN103991816 A CN 103991816A
- Authority
- CN
- China
- Prior art keywords
- hole
- jack
- slide plate
- base
- sole
- 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.)
- Granted
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a jack used on various grounds. The jack comprises a base, a supporting part, a hydraulic pump and a spanner. A sliding plate and a foot plate are arranged in the base, a plurality of first reset springs are arranged between the sliding plate and the foot plate, and a plurality of second reset springs are arranged between the sliding plate and the inner wall of the base. The sliding plate is provided with a first handle, a first positioning hole and a plurality of first supporting blocks, a positioning rod is connected into the first positioning hole, a plurality of second positioning holes are formed in a positioning part, and positioning rods are arranged in the second positioning holes. Each positioning rod is provided with a cone frustum, wherein the cone frustum is arranged above the positioning part, a protection cover is arranged on the positioning part, a hole is formed in the protection cover, and a positioning spring is arranged between the protection cover and the cone frustum. A plurality of supporting legs and a plurality of second supporting blocks are arranged on the foot plate. Compared with the prior art, the jack used on various grounds is simple in structure, low in manufacturing cost, capable of being used in some extreme environments of snowfields and grasslands and applicable to most working environments.
Description
Technical field
This discovery belongs to hydraulic jack technical field, relates in particular to the jack that a kind of many ground is used.
Background technology
Jack is a kind of lifting the simplest highly little weight-lifting equipment.Jack is divided into two kinds of mechanical jack and hydraulic jacks, and principle is had nothing in common with each other.Principle, hydraulic jack based on principle be pascal's principle, that is: liquid pressure is everywhere consistent, like this, in the system of balance, above smaller piston, applied pressure is smaller, and on large piston, applied pressure is also larger, can keep like this static of liquid.So by the transmission of liquid, can obtain the different pressure on different ends, so just can reach the object of a conversion.We common to hydraulic jack be exactly to have utilized this principle to reach the transmission of power.Mechanical jack adopts theory of machines, and back and forth to pull handle, pusher dog is arranged the revolution of ratchet gap, and bevel pinion drives large bevel gear, makes the rotation of weight lifting screw rod, hoists or declines, and reach the function of lifting pulling force thereby jacking sleeve is obtained.But it is simple and easy to be not so good as hydraulic jack.
Hydraulic jack: by manpower or driven by power Hydraulic Pump, by hydraulic efficiency pressure system transmission, lift part as top with cylinder body or piston.Hydraulic jack can be divided into integral type and separation type.All-in-one-piece pump and hydraulic actuating cylinder join together; The pump of separation type separates with hydraulic actuating cylinder, and centre is connected with high pressure hose.Hydraulic jack compact conformation, steadily jacking weight, hoisting capacity maximum reaches 1000 tons, 1 meter of stroke, driving efficiency is higher, therefore application is wider; But easy oil leakage, should not support weight for a long time.As long-term support need be selected self-locking jack, lifting screw and hydraulic jack are further to reduce height of contour or increase top to lift distance, can make multi-stage telescopic.Hydraulic jack, except above-mentioned basic version, can repack climbing form jack, hydaulic lift platform, stretching machine etc. into by same principle, for various special construction occasions.
Existing most Manual hydraulic jack, need to use lever when use.The size of lever generally selects realizing of long ability optimum laborsaving.And the working space that the lever of long size needs is larger, in most cases, when lever uses, the raising height of its one end all can exceed the height of plunger, and in some narrow and small occasions, lever not can be good at realizing its original function.Also with regard to meaning if the environment of periphery causes the usage space of jack very little, this common Manual hydraulic jack just can not well be realized original function.
Use jack on meadow time, because jack need to be placed on above haystack, jack is easily slippage under stressing conditions on meadow.And, due to jack and to need spacing between the object of jack-up be not large especially, want to use other stage properties that jack is struck down fixing also quite inconvenient.When automobile is in snowfield when et out of order, under northerly environment, icing place in snowfield, jack is placed on above and can skids, very dangerous.This just needs a kind of jack that can normal safe handling in the very thick or icing snow drift of snow.
Summary of the invention
This discovery is for deficiency of the prior art, the jack that provides a kind of many ground to use, low cost of manufacture simple in structure, save material, and there is the function that realizes jack-up weight with labour-saving action, can in short space, use, can also in the extreme environment of some of snowfield and meadow, use, adapt to most of working environments.
In order to solve the problems of the technologies described above, this discovery is solved by following technical proposals: the jack that a kind of many ground is used, comprise base, support portion, Hydraulic Pump and spanner, described support portion and described Hydraulic Pump are arranged on described base and are connected to each other, on described support portion, be provided with plunger, described Hydraulic Pump comprises piston rod, on described base, be provided with location division, first hold-down arm and second hold-down arm, in described base, be provided with slide plate and sole, between described slide plate and described sole, be provided with some first retracing springs, between described slide plate and described base inner wall, be provided with some second retracing springs, on described slide plate, be provided with first handle, first knock hole and some first back-up blocks, the shape of cross section of described first back-up block is that right-angled trapezium and bottom are arranged on described slide plate, in described first knock hole, be connected with radius stay, on described location division, be provided with some second knock holees, in described second knock hole, be provided with described radius stay, on described radius stay, be provided with round platform and ball, described round platform is arranged at top, described location division, on described location division, be provided with protective case, on described protective case, arrange porose, the diameter in described hole is larger than the cross section diameter of described radius stay, between described protective case and described round platform, be provided with retainer spring, on described sole, be provided with some feets and some second back-up blocks, the shape of cross section of described second back-up block is that right-angled trapezium and bottom are arranged on described sole, the hypotenuse of the right-angled trapezium of the hypotenuse of the right-angled trapezium of described second back-up block and described first back-up block is parallel to each other, described base below be provided with some go out pin hole, describedly go out to be provided with described feet in pin hole, between described first hold-down arm and described second hold-down arm, be provided with center shaft, on described center shaft, be provided with cam part, described cam part is arranged at described piston rod top and directly contacts with described piston rod, described center shaft is connected with turning handle, on described turning handle, be provided with rotating part, between described piston rod and described Hydraulic Pump, be provided with retracing spring, described perimeter is provided with some second handles.
On described turning handle, be also provided with square rotation termination, described spanner comprises handle and is fixedly connected on its front end, has the socket termination of axial first through hole, in described first through hole, be provided with the rotary terminal with axial square second through hole, on described rotary terminal, be fixedly connected with ratchet, on described cover connecting terminal, be also provided with ratchet.
This finds low cost of manufacture simple in structure, saves material, and has the function that realizes jack-up weight with labour-saving action, can in short space, use, and can also in the extreme environment of some of snowfield and meadow, use, and adapts to most of working environments.
Brief description of the drawings
Fig. 1 is this discovery structural representation.
Fig. 2 is this discovery skateboard schematic diagram.
Fig. 3 is this discovery sole structural representation.
Fig. 4 is this discovering and location bar structural representation.
Fig. 5 is this discovery cam part structural representation.
Fig. 6 is this discovery spanner structure schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, this discovery is described in further detail: as shown in Figures 1 to 6, the jack that a kind of many ground is used, comprise base 1, support portion 2, Hydraulic Pump 3 and spanner, described support portion 2 and described Hydraulic Pump 3 are arranged on described base 1 and are connected to each other, on described support portion 2, be provided with plunger 21, described Hydraulic Pump 3 comprises piston rod 31, on described base 1, be provided with location division 62, first hold-down arm 12 and second hold-down arm 13, in described base 1, be provided with slide plate 7 and sole 8, between described slide plate 7 and described sole 8, be provided with some first retracing springs 81, between described slide plate 7 and described base 1 inwall, be provided with some second retracing springs 71, on described slide plate 7, be provided with first handle 74, first knock hole 73 and some first back-up blocks 72, the shape of cross section of described first back-up block 72 is that right-angled trapezium and bottom are arranged on described slide plate 7, in described first knock hole 73, be connected with radius stay 6, on described location division 62, be provided with some second knock holees, in described second knock hole, be provided with described radius stay 6, on described radius stay 6, be provided with round platform 61 and ball 63, described round platform 61 is arranged at 62 tops, described location division, on described location division 62, be provided with protective case 11, on described protective case 11, arrange porose 111, the diameter in described hole 111 is larger than the cross section diameter of described radius stay 6, between described protective case 11 and described round platform 61, be provided with retainer spring 64, on described sole 8, be provided with some feets 82 and some second back-up blocks 83, the shape of cross section of described second back-up block 83 is that right-angled trapezium and bottom are arranged on described sole 8, the hypotenuse of the right-angled trapezium of the hypotenuse of the right-angled trapezium of described second back-up block 83 and described first back-up block 72 is parallel to each other, described base 1 below be provided with some go out pin hole, describedly go out to be provided with described feet 82 in pin hole, between described first hold-down arm 12 and described second hold-down arm 13, be provided with center shaft 4, on described center shaft 4, be provided with cam part 41, described cam part 41 is arranged at described piston rod 31 tops and directly contacts with described piston rod 31, described center shaft 4 is connected with turning handle 43, on described turning handle 43, be provided with rotating part 42, between described piston rod 31 and described Hydraulic Pump 3, be provided with retracing spring 32, described base 1 periphery is provided with some second handles 14.
On described turning handle 43, be also provided with square rotation termination 5, described spanner comprises handle 53 and is fixedly connected on its front end, has the socket termination 54 of axial first through hole, in described first through hole, be provided with the rotary terminal with axial square second through hole, on described rotary terminal, be fixedly connected with ratchet 51, on described cover connecting terminal 54, be also provided with ratchet 52.
When this discovery work, need rotary middle spindle 4.Want rotary middle spindle 4, only need to rotate turning handle 43 and just can realize.After center shaft 3 rotates, cam 41 also rotates thereupon.Cam 41 is due to the characteristic of himself, in it rotates the process of a week, can, by the piston rod being in direct contact with it 31 to pressing down, arrive after a limit, piston rod 31 is depressed into nadir, then, cam 41 is rotated further, piston rod 31 under the help of spring 32, upwards jack-up, in the time that cam 41 continues to turn over half period, piston rod 31 just returns to original position.Then cam 41 is rotated further half period, again by piston rod 31 to pressing down.Circulation so always, piston rod 31 will, under the interaction of cam 41 and spring 32, move reciprocatingly always.Finally, Hydraulic Pump 3 just can inject hydraulic oil in body 2, thus jack just can work, therefore just can withstand weight.
In order to make this device there is better practicality, also on turning handle 43, be provided with square rotation termination 5.Arrange like this, just can utilize spanner to rotate termination 5, thereby drive center shaft to rotate, and then just can, by above-mentioned mode, make jack work.In order to there is better operating characteristic, also on spanner, be provided with ratchet 51 ratchets 52, arrange like this, when using spanner, in the one-period that just can rotate at power cam 41, spanner need not leave rotation termination 5 and adjust position.Can save time like this, greatly facilitate user.
When use make practical when rotating turning handle 43, if do not wear gloves, can be because the effect of friction, the palm of the hand can be worn skin.In order to protect user, on turning handle 43, be provided with rotating part 42.Rotating part 42 can rotate around its oneself axis on turning handle 43.Like this, thereby user holds rotating part 42 when driving turning handles 43 to rotate, just can prevent hand to be worn skin.
Arrange like this, this device can also carry out work in the situation that some are special, on meadow in the wild, even on the ice face in winter or the road surface of some smoother.To common jack, when ground the unevenness of work, the lower ground of base 1 and driving surface be well laminating not, or on meadow, jack is easily slippage under stressing conditions on meadow, and now, common jack just can not well be worked.In jack-up weight, because placement is not steady, jack may be shifted unexpectedly, finally can cause serious accident.
In order to use in some special environment, this device is provided with slide plate 7 and sole 8, and the radius stay 6 that coordinates slide plate 7 and sole 8 to work.Between slide plate 7 and sole 8, first retracing spring 81 is set, between slide plate 7 and base 1 inwall, is provided with some second retracing springs 71, and be provided with first back-up block 72 and second back-up block 83.Under normal environment service condition, feet 82 on sole 8 can not stretch out from going out pin hole, only in the time that particular surroundings is used, feet 82 stretches out, huge friction force and earth-grasping force is provided, make this device can not be easy to so be shifted, can be good at avoiding the generation of contingency.Arrange like this, this device also can be good at working on meadow in the wild, even, on ice face, also has and well grabs ground effect.So this device goes for most working environments.
Arrange like this, in the time that particular surroundings is used, thereby can pull first handle 74 to drive slide plate 7 to slide.Second back-up block 83 on first back-up block 72 and sole 8 on slide plate 7, in the time of normal use, the inclined-plane that the hypotenuse of right-angled trapezium cross-sectional plane forms abuts against each other.In the time that slide plate 7 slides, under the directional tagging due to inclined-plane, sole 8 can be pressed down, and like this, feet 82 will stretch out from going out pin hole.Finally, the second back-up block 83 on first back-up block 72 and sole 8 on slide plate 7, the plane that the upper base of its right-angled trapezium cross-sectional plane forms compresses mutually, and like this, first back-up block 72 and second back-up block 83 are stacked together up and down, have just formed one " pillar ".This " pillar " can supported pin 82.Because feet 82 can provide good friction force, so this device just can be on meadow or some easily sliding flat general works such as ice face.
Be provided with some second retracing springs 71 and some first retracing springs 81, make this device in not needing practical feet 82, slide plate 7 and sole 8 can reset automatically, and feet 82 can go back from going out pin hole automatically.When preventing from using, there is unforeseen circumstances, cause slide plate 7, sole 8 and feet to reset automatically, this device is provided with radius stay 6.The periphery of first knock hole 73 arranges recess, and like this, in pulling slide plate 7 to slide, radius stay 6 by this recess, can enter very smoothly first knock hole 73 on slide plate 7 surfaces.So just slide plate 7 can be located, it can not be set back, so just can make feet 82 normally to work.Because when jack work, the main stressing conditions of sole 82 is vertical direction, horizontal direction does not stress substantially.Using the anti-limited slip plate 7 of radius stay 6 to reset so, the power that described radius stay 6 is received is little, so the diameter of radius stay 6 and requirement of strength needn't be too strict.
For convenient pull-out radius stay 6, slide plate 7 is set back smoothly, in radius stay 6 upper ends, ball 63 is set.User can hold ball 63, and radius stay 6 is upwards drawn, and can make radius stay 6 leave first knock hole 73, and like this, what slide plate 7 just can be unimpeded has set back.
This discovery is also provided with second handle 14, arranges like this, in the time that needs are carried this device, can utilize second handle 14, and this device is sling to move, and also can utilize second handle 14 to drag this device.Second handle 14 makes the move mode of this device abundanter.
This finds low cost of manufacture simple in structure, saves material, and has the function that realizes jack-up weight with labour-saving action, can in short space, use, and can also in the extreme environment of some of snowfield and meadow, use, and adapts to most of working environments.
Claims (2)
1. the jack that ground more than one kind is used, comprise base (1), support portion (2), Hydraulic Pump (3) and spanner, described support portion (2) and described Hydraulic Pump (3) are arranged at described base (1) above and are connected to each other, on described support portion (2), be provided with plunger (21), described Hydraulic Pump (3) comprises piston rod (31), it is characterized in that: on described base (1), be provided with location division (62), first hold-down arm (12) and second hold-down arm (13), in described base (1), be provided with slide plate (7) and sole (8), between described slide plate (7) and described sole (8), be provided with some first retracing springs (81), between described slide plate (7) and described base (1) inwall, be provided with some second retracing springs (71), on described slide plate (7), be provided with first handle (74), first knock hole (73) and some first back-up blocks (72), the shape of cross section of described first back-up block (72) is that right-angled trapezium and bottom are arranged on described slide plate (7), in described first knock hole (73), be connected with radius stay (6), on described location division (62), be provided with some second knock holees, in described second knock hole, be provided with described radius stay (6), on described radius stay (6), be provided with round platform (61) and ball (63), described round platform (61) is arranged at top, described location division (62), on described location division (62), be provided with protective case (11), on described protective case (11), arrange porose (111), the diameter in described hole (111) is larger than the cross section diameter of described radius stay (6), between described protective case (11) and described round platform (61), be provided with retainer spring (64), on described sole (8), be provided with some feets (82) and some second back-up blocks (83), the shape of cross section of described second back-up block (83) is that right-angled trapezium and bottom are arranged on described sole (8), the hypotenuse of the right-angled trapezium of the hypotenuse of the right-angled trapezium of described second back-up block (83) and described first back-up block (72) is parallel to each other, described base (1) below be provided with some go out pin hole, describedly go out to be provided with described feet (82) in pin hole, between described first hold-down arm (12) and described second hold-down arm (13), be provided with center shaft (4), on described center shaft (4), be provided with cam part (41), described cam part (41) is arranged at described piston rod (31) top and directly contacts with described piston rod (31), described center shaft (4) is connected with turning handle (43), on described turning handle (43), be provided with rotating part (42), between described piston rod (31) and described Hydraulic Pump (3), be provided with retracing spring (32), described base (1) periphery is provided with some second handles (14).
2. the jack that a kind of many ground according to claim 1 is used, it is characterized in that: on described turning handle (43), be also provided with square rotation termination (5), described spanner comprises handle (53) and is fixedly connected on its front end, has the socket termination (54) of axial first through hole, in described first through hole, be provided with the rotary terminal with axial square second through hole, on described rotary terminal, be fixedly connected with ratchet (51), on described cover connecting terminal (54), be also provided with ratchet (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237224.4A CN103991816B (en) | 2014-05-30 | 2014-05-30 | The jack that a kind of many ground is used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237224.4A CN103991816B (en) | 2014-05-30 | 2014-05-30 | The jack that a kind of many ground is used |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103991816A true CN103991816A (en) | 2014-08-20 |
| CN103991816B CN103991816B (en) | 2016-05-11 |
Family
ID=51306202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410237224.4A Active CN103991816B (en) | 2014-05-30 | 2014-05-30 | The jack that a kind of many ground is used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103991816B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285105A (en) * | 2018-03-29 | 2018-07-17 | 邳州高新区新能源技术研究院有限公司 | A kind of automatic lifting hydraulic jack |
| CN108708299A (en) * | 2018-05-25 | 2018-10-26 | 李袁宗 | A kind of bridge jacking device |
| CN110668345A (en) * | 2019-10-30 | 2020-01-10 | 泰州市汇顶机械制造有限公司 | Mechanical jack convenient to remove |
| CN115057383A (en) * | 2022-07-18 | 2022-09-16 | 宁波天益齿轴齿轮有限公司 | High-efficiency hydraulic jack |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976172A (en) * | 1974-11-22 | 1976-08-24 | The United States Of America As Represented By The Secretary Of The Army | Brake |
| CN2272432Y (en) * | 1996-08-30 | 1998-01-14 | 刘五星 | Portable automatic hydraulic jack |
| CN2804049Y (en) * | 2005-05-30 | 2006-08-09 | 邓国成 | Hydraulic jack |
| CN201214616Y (en) * | 2008-05-09 | 2009-04-01 | 郑元 | Electric hydraulic vertical jack |
| CN201850109U (en) * | 2010-06-17 | 2011-06-01 | 崔金波 | Electrically-controlled pneumatic jack |
| US8550434B1 (en) * | 2012-01-17 | 2013-10-08 | Kai Hsiang Traffic Appliance Co. Ltd. | Cylinder jack stand |
| CN203865956U (en) * | 2014-05-26 | 2014-10-08 | 宁波天益齿轴齿轮有限公司 | Jack suitable for small space |
| CN203865942U (en) * | 2014-05-26 | 2014-10-08 | 宁波天益齿轴齿轮有限公司 | Movable jack suitable for multiple environments |
-
2014
- 2014-05-30 CN CN201410237224.4A patent/CN103991816B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976172A (en) * | 1974-11-22 | 1976-08-24 | The United States Of America As Represented By The Secretary Of The Army | Brake |
| CN2272432Y (en) * | 1996-08-30 | 1998-01-14 | 刘五星 | Portable automatic hydraulic jack |
| CN2804049Y (en) * | 2005-05-30 | 2006-08-09 | 邓国成 | Hydraulic jack |
| CN201214616Y (en) * | 2008-05-09 | 2009-04-01 | 郑元 | Electric hydraulic vertical jack |
| CN201850109U (en) * | 2010-06-17 | 2011-06-01 | 崔金波 | Electrically-controlled pneumatic jack |
| US8550434B1 (en) * | 2012-01-17 | 2013-10-08 | Kai Hsiang Traffic Appliance Co. Ltd. | Cylinder jack stand |
| CN203865956U (en) * | 2014-05-26 | 2014-10-08 | 宁波天益齿轴齿轮有限公司 | Jack suitable for small space |
| CN203865942U (en) * | 2014-05-26 | 2014-10-08 | 宁波天益齿轴齿轮有限公司 | Movable jack suitable for multiple environments |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285105A (en) * | 2018-03-29 | 2018-07-17 | 邳州高新区新能源技术研究院有限公司 | A kind of automatic lifting hydraulic jack |
| CN108708299A (en) * | 2018-05-25 | 2018-10-26 | 李袁宗 | A kind of bridge jacking device |
| CN110668345A (en) * | 2019-10-30 | 2020-01-10 | 泰州市汇顶机械制造有限公司 | Mechanical jack convenient to remove |
| CN115057383A (en) * | 2022-07-18 | 2022-09-16 | 宁波天益齿轴齿轮有限公司 | High-efficiency hydraulic jack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103991816B (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103991816B (en) | The jack that a kind of many ground is used | |
| CN204689527U (en) | The lifting screw that a kind of rising or falling speed is fast | |
| CN109095381A (en) | A kind of mechanical type hydraulic jack | |
| CN103009362A (en) | Lifting-type cutter supporting platform | |
| CN203865956U (en) | Jack suitable for small space | |
| CN109534231A (en) | Vertical Lift stack device | |
| CN203922579U (en) | A kind of foot-operated scissor-like jack | |
| CN203865942U (en) | Movable jack suitable for multiple environments | |
| CN203922580U (en) | A kind of simple and easy lifting screw | |
| CN202943616U (en) | Elevation type cutter supporting table | |
| CN106185303B (en) | A kind of plank easing gear | |
| CN203865952U (en) | Hydraulic jack | |
| CN208378305U (en) | A kind of lightweight single leg support recreational vehicle electric jack stand | |
| CN203865957U (en) | Simple jack | |
| CN202829441U (en) | Lead screw lifting device | |
| CN211691530U (en) | Bolt ball truss hoisting device | |
| CN211198400U (en) | Lifting device for constructional engineering | |
| CN201883695U (en) | Spherical net rack vertical jacking equipment | |
| CN203865953U (en) | Hydraulic jack used in small space | |
| CN209493265U (en) | A kind of fluid pressure type trailer top | |
| CN210419092U (en) | Hand-operated lifting device | |
| CN208814599U (en) | A kind of convenient scissors type elevating platform mechanism | |
| CN205786710U (en) | Multifunction test platform | |
| CN204281173U (en) | The liter of gear oil drum falls instrument in a kind of electrical generator oil guide groove | |
| CN220300293U (en) | Portable automobile hydraulic jack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |