EP0124141A1 - Electrically operated lifting jack - Google Patents
Electrically operated lifting jack Download PDFInfo
- Publication number
- EP0124141A1 EP0124141A1 EP84200200A EP84200200A EP0124141A1 EP 0124141 A1 EP0124141 A1 EP 0124141A1 EP 84200200 A EP84200200 A EP 84200200A EP 84200200 A EP84200200 A EP 84200200A EP 0124141 A1 EP0124141 A1 EP 0124141A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jack
- bar
- vehicle
- lifted
- lifting
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/12—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
Definitions
- This invention relates to a lifting jack, and more specifically to its special construction and operation employing electric drive, but with the facility for alternative manual operation should the electricity supply fail.
- the manual operation of the jack for replacing a tyre is particularly slow, laborious and disagreeable, especially when atmospheric conditions are bad as this operation has to be carried out in the open, and moreover in this emergency situation the automobile user has to assume a physically abnormal operating position which is particularly tiring after his immobility during driving, all this being further accentuated in the case of female drivers.
- the object of the invention is to obviate said drawbacks by providing a lifting device which is to a certain extent automatic, is of simple, immediate and safe use, operates gradually with uniformity, and requires no physical force.
- a further object is to form the device according to the invention with elements which are advantageously known but which are novel in terms of their assembly and operational combination, such that the device is simple and rapid to construct and assemble, and has a long operating life, leading also to reduced costs, ie a further economical advantage with commercially competitive profit.
- a lifting jack of the type comprising a member for coupling to the vehicle to be lifted from a base on which the jack also rests, said coupling member being raised by rotating a threaded bar, characterised in that the threaded bar is; rotated by a low voltage electric motor operationally connected to the bar by way of a reduction unit constituted by two sets of gears in cascade fixed on to parallel shafts, of which one is connected to the motor and the other to the bar.
- the reference numeral 1 indicates the threaded bar housed in known manner in the box casing 2 which is welded lowerly at 3 to the base 4 for support on the ground, and is provided laterally with a hollow support 5 in which at 6 there is hinged the shank 7 which is swivelled when in operation into the angular engagement position 7a for lifting the load but has its end housed in the plastics socket 8 ( Figure 1) when not operating.
- a metal container 9 which is approximately parallelepiped geometrically, is covered with a coating of plastics material (not shown) for aesthetic and accident-prevention purposes, and contains a low voltage electric motor 10, for which in the case of automobile application the supply can be the relative battery, by inserting the respective cable into the known cigarette lighter socket.
- gear 15 of the motion reduction unit which is formed by two sets of gears of normal cylindrical toothing 15, 16, 17, 18 and 19, 20, 21, plus a fourth gear, not shown, which engages in the gear 15 while the gears 16 and 19, 17 and 20, and 18 and 21 engage with each other.
- the gears 15, 16, 17, 18 are fixed on to the shaft 13, while the gears 19, 20, 21 (plus that not shown because hidden by the gear 19) are fixed on to the shaft 14.
- the shafts 13 and 14 are parallel.
- All said gears are contained in cascade in the housing 22, which is constructed of cast light alloy and is suitably closed by the cover 24, by means of the screws 23 which are screwed into the bored bosses 9a of the container 9 ( Figure 3), thus also retaining the housing itself.
- the shaft 14 emerges from the lower support boss 27 of the cover 24, and the shaft 13 emerges from the upper boss 28.
- this latter shaft is provided with an offset central diametrical sector 29 arranged to perform a specific function described hereinafter, and its end 30 is provided with a facet 31 and a bore 32, for housing and locking the inner end 32a of the lever 33 by means of the bolt 34 and spacer 34a.
- Said lever 33 constructed of special harmonic steel, is configured with a slightly offset profile comprising a joining step 35, in order to allow it to operate with a high level of elasticity, whereas the opposite end 36, ie the end outwards from the aforesaid end, is fixed by a screw 37 and spacer 38 to the boss 39 which forms one of the corresponding set of bosses which are positioned angularly spaced-apart and comprise stiffening ribs 23a, their purpose being to fix the cover 24 to the corresponding housing 22.
- the jack operates as follows.
- the electric motor 10 On pressing the rocker switch 11, the electric motor 10 is started and by way of its pinion 12 rotates the set of reduction gears contained in the housing 22, and of which the terminal bevel gear 26 drives the threaded bar 1 at low uniform speed, to cause raising and consequent retraction of the support and load lifting shank 7,
- said switch 11 is of open eentre configuration, which operates only while manual pressure is applied, ie on
- a further useful aspect is that if for any reason the electrical supply to the motor 10 should fail, the jack is able to be set for conventional manual operation.
- the emergency angle crank 42 comprising a knurled operating knob 43 is fitted on to the flattened end 41 of the shaft 14, to thus enable the operator to proceed with the conventional method, even if only momentarily, thus allowing the necessary tyre changing operation to be completed.
- a lifting device which comprises a lever system, of which the operational linkage is able to align the respective end barycentres of those parts which make contact in operation, along a trajectory parallel to the respective curve followed as the vehicle is tilted, with reference to Figures 2, 4, 5 and 6.
- the jack according to the invention is essentially composed of a metal flanged support 51, comprising two spaced-apart lateral lugs 52 welded to it at 52a, and between which is positioned the mobile support 53, provided with end projections 54 of continuous profile.
- the central sector 55 of the support 53 houses one end of the threaded bar 56 by way of the thrust bearing 57, which bar, after passing through the housing 22 containing the reduction gear 15-21 described heretofore with reference to Figure 3, emerges by way of its flattened end 30 for connecting the crank 42 comprising the knurled knob 43, for the purpose of any necessary emergency manual operation of the jack.
- the shaft 14 comprises at its exit from the reduction unit 22 a bevel gear 25.
- the box section of U cross-section 59 which is provided with an angular base 60 for resting on the ground 61.
- the box section 59 is provided in the upper part of its two side flanges 62 with an end slot 63, which opens into the circular housing hole 64.
- the respective opposing two projections 54 of the mobile support 53 have reduced-diameter profiles with a semi-circular cross-section 65 which extends beyond the axis 66 passing through the centre of the circle, in order to allow non-removable disengagement of the box section 59 during its operation described hereinafter.
- the lever 69 is hinged, in a manner which allows it to swivel, to the inside of the flanges 62 of the box section 59, for example by means of the bolt 67 with locking nut 68, and is configured as two parallel spaced-apart flat sections between which there is positioned, by means of the bolt and nut 70, the ball joint 71 which comprises an internal thread engaging with the end 72 of said bar 56.
- the lever 69 is joined upperly by a weld 73 to the bracket 74, which is provided on one side with a circular recess 75, and further provided with a pin 76 welded at 77 and retaining by way of the bore 79 the plate 78 which makes lifting contact with the vehicle floor after being centered in the slot of the floor by means of the shank 80.
- the plate 78 for reasons of stability during lifting can also comprise a central appendix for housing in the cavity 75, and be provided with a circular section piece arranged to rest on the outside of the pin 76.
- the lever 69 instead of being as shown can be hinged in a lower position by means of the further hole or other holes 81 provided in the respective flanges 62 of the box section 59.
- the jack device of Figures 2, 4, 5 and 6 operates as follows.
- the operator starts the electric motor 10 by means of the known switch, to cause rotation of the threaded bar 56.
- Said trajectory C remains parallel to the curve followed by the vehicle during its lifting, thus leading to an advantageous gradual and uniform distribution of mechanical stresses, the consequent short length of operational travel of the bar 56 obviating any stumbling movement along the floor or counter-productive interference therewith.
- the components according to the invention which are covered by an aesthetic accident-prevention coating, become disposed one above the other in an arrangement of minimum bulk when not operating, as shown in Figure 5, to the advantage of accessibility of the respective vehicle compartment.
Abstract
Description
- This invention relates to a lifting jack, and more specifically to its special construction and operation employing electric drive, but with the facility for alternative manual operation should the electricity supply fail.
- In the automobile field, the manual operation of the jack for replacing a tyre is particularly slow, laborious and disagreeable, especially when atmospheric conditions are bad as this operation has to be carried out in the open, and moreover in this emergency situation the automobile user has to assume a physically abnormal operating position which is particularly tiring after his immobility during driving, all this being further accentuated in the case of female drivers.
- The object of the invention is to obviate said drawbacks by providing a lifting device which is to a certain extent automatic, is of simple, immediate and safe use, operates gradually with uniformity, and requires no physical force.
- A further object is to form the device according to the invention with elements which are advantageously known but which are novel in terms of their assembly and operational combination, such that the device is simple and rapid to construct and assemble, and has a long operating life, leading also to reduced costs, ie a further economical advantage with commercially competitive profit. These objects and advantages together with others which will be apparent from the detailed description given hereinafter are attained by a lifting jack of the type comprising a member for coupling to the vehicle to be lifted from a base on which the jack also rests, said coupling member being raised by rotating a threaded bar, characterised in that the threaded bar is; rotated by a low voltage electric motor operationally connected to the bar by way of a reduction unit constituted by two sets of gears in cascade fixed on to parallel shafts, of which one is connected to the motor and the other to the bar.
- The invention is described hereinafter in the form of two different embodiments of the jack to which the electrical operating device according to the invention is applied, with reference to the accompanying drawings in which:
- Figures 1 and 2 are side elevations of two types of jack both comprising the electrical operating device according to the invention;
- Figure 3 is an upper exploded view corresponding to the jack of Figure 1, but showing in detail the components of the electrical operating device according to the invention;
- Figure 4 is a side view of the jack of Figure 2, in its operating state:
- Figure 5 is a partial view to an enlarged scale of the lower end of the jack of Figures 2 and 4 in its retracted state;
- Figure 6 is a constructional assembly detail of the components of the upper part of the jack of Figures 2, 4 and 5, in partial section on the line VI-VI of Figure 2.
- In Figures 1 and 3, the
reference numeral 1 indicates the threaded bar housed in known manner in thebox casing 2 which is welded lowerly at 3 to the base 4 for support on the ground, and is provided laterally with ahollow support 5 in which at 6 there is hinged theshank 7 which is swivelled when in operation into theangular engagement position 7a for lifting the load but has its end housed in the plastics socket 8 (Figure 1) when not operating. - According to the new specific characteristic, to the top of the
casing 2 there is connected by known means ametal container 9 which is approximately parallelepiped geometrically, is covered with a coating of plastics material (not shown) for aesthetic and accident-prevention purposes, and contains a low voltageelectric motor 10, for which in the case of automobile application the supply can be the relative battery, by inserting the respective cable into the known cigarette lighter socket. - From said
motor 10 there emerges thepinion 12, which has helical teeth and thus operates with reduced noise and vibration (Figure 3). - With it there engages the
gear 15 of the motion reduction unit, which is formed by two sets of gears of normalcylindrical toothing gear 15 while thegears - The
gears shaft 13, while thegears 19, 20, 21 (plus that not shown because hidden by the gear 19) are fixed on to theshaft 14. Theshafts - All said gears are contained in cascade in the
housing 22, which is constructed of cast light alloy and is suitably closed by thecover 24, by means of thescrews 23 which are screwed into thebored bosses 9a of the container 9 (Figure 3), thus also retaining the housing itself. - On the inner end of the
shaft 14 comprising thespline 14a there is fixed by means of a known key theoutput bevel gear 25, which is directly coupled with the corresponding orthogonal gear 26, fixed to the upper end of the threadedbar 1. - As shown on the figures, the
shaft 14 emerges from thelower support boss 27 of thecover 24, and theshaft 13 emerges from theupper boss 28. - According to a further characteristic of the invention, this latter shaft is provided with an offset central
diametrical sector 29 arranged to perform a specific function described hereinafter, and itsend 30 is provided with afacet 31 and abore 32, for housing and locking theinner end 32a of thelever 33 by means of thebolt 34 andspacer 34a. - Said
lever 33, constructed of special harmonic steel, is configured with a slightly offset profile comprising a joiningstep 35, in order to allow it to operate with a high level of elasticity, whereas theopposite end 36, ie the end outwards from the aforesaid end, is fixed by ascrew 37 andspacer 38 to theboss 39 which forms one of the corresponding set of bosses which are positioned angularly spaced-apart and comprisestiffening ribs 23a, their purpose being to fix thecover 24 to thecorresponding housing 22. - The jack operates as follows.
- On pressing the
rocker switch 11, theelectric motor 10 is started and by way of itspinion 12 rotates the set of reduction gears contained in thehousing 22, and of which the terminal bevel gear 26 drives the threadedbar 1 at low uniform speed, to cause raising and consequent retraction of the support andload lifting shank 7, - by two separate and opposite positionings of said
switch 11. Advantageously, saidswitch 11 is of open eentre configuration, which operates only while manual pressure is applied, ie on - removal of pressure the electrical supply, ie its operation,.is interrupted, so that when the operator withdraws, the travel movement of the jack immediately stops, with the obvious advantage of general accident prevention.
- The effective operability of the device with reference to its new components, its validity, and its comfortable and safe handling are perfectly apparent.
- A further useful aspect is that if for any reason the electrical supply to the
motor 10 should fail, the jack is able to be set for conventional manual operation. - In such an emergency, the
outer end 36 of thelever 33 is removed fran theboss 39 of thecover 24 and is fixed to theother boss 40, in which case because of the eccentricity of thesector 29 of theshaft 13, itsgears shaft 14, ie this latter becomes radially displaced from theshaft 13. - In such circumstances, the
emergency angle crank 42 comprising aknurled operating knob 43 is fitted on to theflattened end 41 of theshaft 14, to thus enable the operator to proceed with the conventional method, even if only momentarily, thus allowing the necessary tyre changing operation to be completed. - The aforegoing relates to the application of the electrical device according to the invention to a conventional jack, but in which however certain difficulties often arise, and in particular the excessive and non-uniform intensity of the mechanical stresses, leading to variously directed forces which negatively affect the floor of the vehicle, thus causing instability during lifting.
- A description will now be given of a further application of the device according to the invention to a lifting device which comprises a lever system, of which the operational linkage is able to align the respective end barycentres of those parts which make contact in operation, along a trajectory parallel to the respective curve followed as the vehicle is tilted, with reference to Figures 2, 4, 5 and 6.
- The jack according to the invention is essentially composed of a metal flanged
support 51, comprising two spaced-apartlateral lugs 52 welded to it at 52a, and between which is positioned themobile support 53, provided withend projections 54 of continuous profile. - The central sector 55 of the
support 53 houses one end of the threadedbar 56 by way of the thrust bearing 57, which bar, after passing through thehousing 22 containing the reduction gear 15-21 described heretofore with reference to Figure 3, emerges by way of itsflattened end 30 for connecting thecrank 42 comprising theknurled knob 43, for the purpose of any necessary emergency manual operation of the jack. - In contrast, in the embodiment of Figures 1 and 3, the
shaft 14 comprises at its exit from the reduction unit 22 abevel gear 25. Within the said twolateral lugs 52 of theflange 51, and more specifically to theprojections 54 of themobile support 53 which emerge by way of theirends 58 in a torsionally rigid manner, there is welded the box section ofU cross-section 59, which is provided with anangular base 60 for resting on theground 61. In addition, in order to facilitate its mounting on saidmobile support 53, thebox section 59 is provided in the upper part of its twoside flanges 62 with anend slot 63, which opens into thecircular housing hole 64. - Again for the purposes of said assembly, the respective opposing two
projections 54 of themobile support 53 have reduced-diameter profiles with asemi-circular cross-section 65 which extends beyond theaxis 66 passing through the centre of the circle, in order to allow non-removable disengagement of thebox section 59 during its operation described hereinafter. - The
lever 69 is hinged, in a manner which allows it to swivel, to the inside of theflanges 62 of thebox section 59, for example by means of thebolt 67 withlocking nut 68, and is configured as two parallel spaced-apart flat sections between which there is positioned, by means of the bolt andnut 70, theball joint 71 which comprises an internal thread engaging with theend 72 of saidbar 56. - The
lever 69 is joined upperly by aweld 73 to thebracket 74, which is provided on one side with acircular recess 75, and further provided with apin 76 welded at 77 and retaining by way of thebore 79 theplate 78 which makes lifting contact with the vehicle floor after being centered in the slot of the floor by means of theshank 80. - To extend the application of the jack to various types of automobile, the
plate 78 for reasons of stability during lifting can also comprise a central appendix for housing in thecavity 75, and be provided with a circular section piece arranged to rest on the outside of thepin 76. - Again for universal application, the
lever 69 instead of being as shown can be hinged in a lower position by means of the further hole orother holes 81 provided in therespective flanges 62 of thebox section 59. - The jack device of Figures 2, 4, 5 and 6 operates as follows. When a tyre has to be changed or other operations performed, the operator starts the
electric motor 10 by means of the known switch, to cause rotation of the threadedbar 56. - In this emergency situation, this latter rises to consequently swivel the
lever 69 and press against the vehicle floor by way of theplate 78, so that with thebox section 59 vertically positioned on theground 61 by way of itsbase 60, the respective end barycentres A and B of the contactinglifting plate 78 and of thefoot 60 resting on the ground (Figure 4) become aligned along the trajectory C. - Said trajectory C remains parallel to the curve followed by the vehicle during its lifting, thus leading to an advantageous gradual and uniform distribution of mechanical stresses, the consequent short length of operational travel of the
bar 56 obviating any stumbling movement along the floor or counter-productive interference therewith. - As a further advantage, the components according to the invention, which are covered by an aesthetic accident-prevention coating, become disposed one above the other in an arrangement of minimum bulk when not operating, as shown in Figure 5, to the advantage of accessibility of the respective vehicle compartment.
- Only two types of lifting jack have been described and illustrated, however the electrical device according to the invention can be applied with the same advantages to any other type of currently commercially available jack.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84200200T ATE33614T1 (en) | 1983-02-24 | 1984-02-15 | ELECTRICALLY POWERED JACK. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT5297083U IT8352970V0 (en) | 1983-02-24 | 1983-02-24 | ELECTRIC CONTROLLED LIFTING JACK |
IT5297083U | 1983-02-24 | ||
IT5373183U | 1983-09-21 | ||
IT5373183U IT8353731V0 (en) | 1983-09-21 | 1983-09-21 | AUTOMOTIVE JACK |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0124141A1 true EP0124141A1 (en) | 1984-11-07 |
EP0124141B1 EP0124141B1 (en) | 1988-04-20 |
Family
ID=26329512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19840200200 Expired EP0124141B1 (en) | 1983-02-24 | 1984-02-15 | Electrically operated lifting jack |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0124141B1 (en) |
AU (1) | AU2477384A (en) |
BR (1) | BR8400843A (en) |
DE (1) | DE3470514D1 (en) |
DK (1) | DK91684A (en) |
ES (1) | ES529996A0 (en) |
MX (1) | MX155891A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227256A2 (en) * | 1985-10-24 | 1987-07-01 | Tai-Her Yang | Jack combined with an air pump and using a common drive motor |
FR2624043A1 (en) * | 1987-12-16 | 1989-06-09 | Chung Yang Cy Ltd | MULTI-FUNCTION ENGINE TOOL FOR MOTOR VEHICLES |
GB2245539A (en) * | 1990-06-28 | 1992-01-08 | B & L Corp | Screw-type jack |
WO2014071699A1 (en) * | 2012-11-09 | 2014-05-15 | 广东富华工程机械制造有限公司 | Electrically powered gear box for a semitrailer stabilizer |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1159171B1 (en) | 1999-03-04 | 2008-05-07 | Razor International Pty Limited | Powered trailer jacking system |
US6230340B1 (en) * | 1999-11-20 | 2001-05-15 | Bruce Edwards | Truck bed cot system |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190907038A (en) * | 1909-03-24 | 1909-11-25 | Thomas Foster | Improvements in Screw Jacks. |
US1514120A (en) * | 1924-05-08 | 1924-11-04 | William R G Alters | Electric jack |
US3062504A (en) * | 1960-09-30 | 1962-11-06 | Hilary P Blanchard | Electric automobile jack |
DE1778036A1 (en) * | 1967-03-25 | 1971-07-15 | Stamicarbon | Method and device for sieving and drying plastic granulate obtained by wet granulation |
US3606252A (en) * | 1969-07-15 | 1971-09-20 | Joe Dorough Jr | Portable electric automobile jack |
DE2427443B2 (en) * | 1974-06-07 | 1978-05-24 | Fa. August Bilstein, 5828 Ennepetal | Jack |
DE3104119A1 (en) * | 1981-02-06 | 1982-09-02 | Ali Farzad 6000 Frankfurt Farzaneh | Electric jack |
DE3109985A1 (en) * | 1981-03-14 | 1982-11-25 | Ecker, Engelbert, 7032 Sindelfingen | Device for lifting and lowering a vehicle |
-
1984
- 1984-02-15 DE DE8484200200T patent/DE3470514D1/en not_active Expired
- 1984-02-15 EP EP19840200200 patent/EP0124141B1/en not_active Expired
- 1984-02-21 AU AU24773/84A patent/AU2477384A/en not_active Abandoned
- 1984-02-23 BR BR8400843A patent/BR8400843A/en unknown
- 1984-02-23 ES ES529996A patent/ES529996A0/en active Granted
- 1984-02-23 DK DK91684A patent/DK91684A/en not_active Application Discontinuation
- 1984-02-23 MX MX20044884A patent/MX155891A/en unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB190907038A (en) * | 1909-03-24 | 1909-11-25 | Thomas Foster | Improvements in Screw Jacks. |
US1514120A (en) * | 1924-05-08 | 1924-11-04 | William R G Alters | Electric jack |
US3062504A (en) * | 1960-09-30 | 1962-11-06 | Hilary P Blanchard | Electric automobile jack |
DE1778036A1 (en) * | 1967-03-25 | 1971-07-15 | Stamicarbon | Method and device for sieving and drying plastic granulate obtained by wet granulation |
US3606252A (en) * | 1969-07-15 | 1971-09-20 | Joe Dorough Jr | Portable electric automobile jack |
DE2427443B2 (en) * | 1974-06-07 | 1978-05-24 | Fa. August Bilstein, 5828 Ennepetal | Jack |
DE3104119A1 (en) * | 1981-02-06 | 1982-09-02 | Ali Farzad 6000 Frankfurt Farzaneh | Electric jack |
DE3109985A1 (en) * | 1981-03-14 | 1982-11-25 | Ecker, Engelbert, 7032 Sindelfingen | Device for lifting and lowering a vehicle |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227256A2 (en) * | 1985-10-24 | 1987-07-01 | Tai-Her Yang | Jack combined with an air pump and using a common drive motor |
EP0227256A3 (en) * | 1985-10-24 | 1988-07-13 | Tai-Her Yang | Jack combined with an air pump and using a common drive motor |
FR2624043A1 (en) * | 1987-12-16 | 1989-06-09 | Chung Yang Cy Ltd | MULTI-FUNCTION ENGINE TOOL FOR MOTOR VEHICLES |
GB2245539A (en) * | 1990-06-28 | 1992-01-08 | B & L Corp | Screw-type jack |
GB2245539B (en) * | 1990-06-28 | 1994-04-06 | B & L Corp | Screw-type jack |
WO2014071699A1 (en) * | 2012-11-09 | 2014-05-15 | 广东富华工程机械制造有限公司 | Electrically powered gear box for a semitrailer stabilizer |
Also Published As
Publication number | Publication date |
---|---|
DK91684A (en) | 1984-08-25 |
ES8502404A1 (en) | 1985-01-16 |
AU2477384A (en) | 1984-08-30 |
ES529996A0 (en) | 1985-01-16 |
DE3470514D1 (en) | 1988-05-26 |
BR8400843A (en) | 1984-10-02 |
MX155891A (en) | 1988-05-18 |
DK91684D0 (en) | 1984-02-23 |
EP0124141B1 (en) | 1988-04-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19850409 |
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