GB2130171A - Lifting apparatus, particularly for fork lift trucks - Google Patents
Lifting apparatus, particularly for fork lift trucks Download PDFInfo
- Publication number
- GB2130171A GB2130171A GB08328245A GB8328245A GB2130171A GB 2130171 A GB2130171 A GB 2130171A GB 08328245 A GB08328245 A GB 08328245A GB 8328245 A GB8328245 A GB 8328245A GB 2130171 A GB2130171 A GB 2130171A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rocker
- vehicle frame
- supporting
- side portion
- 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
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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
A lifting apparatus allows for vertical movement of the load to be picked up and is suitable for mounting on fork lift trucks. It has a supporting arm 11 which bears, through pivoted guide means 3, on a supporting means 27 mounted on vehicle frame 1. The arm 11 has a fork carrier 18 arranged at one end, and has a hinge point for the piston rod 16 of lifting cylinder 7. A support 35 provided at the bottom of the cylinder 7 is arranged in a pocket 36 in side portion 37 of the vehicle frame 1. The other end of the supporting arm 11 has a rocker head 34 provided with hinge points for draw bars 23, 25 and rocker 5, the rocker 5 being functionally connected by a balancing carriage 34 to a guide rail 38 which is fixed detachably onto the side portion 37. A connecting rod 29 hinged on the guide means 3 is hinged at 30 to the carriage 34. The fork carrier 18 may be tilted by a cylinder 9, the arm 11 being raised or lowered by the lifting cylinder 7. As the arm 11 is raised or lowered the carriage 34 moves horizontally under the action of the rod 29 thus adjusting the position of pivot point 32 of the rocker 5. <IMAGE>
Description
SPECIFICATION
Lifting apparatus, particularly for fork lift trucks
This invention relates to a lifting apparatus which allows for vertical movement of the load, and which is particularly suitable for fork lift trucks with a rocker system, and to a fork lift truck provided with such lifting apparatus.
It is known from DD-WP 134 633 to have a guiding means arranged pivotably, eccentrically at one side of the vehicle frame in front of the front axle, at a hinge point which has a vertical clearance from the roadway larger than half the lifting height. The other end of the guiding means is joined flexibly to a supporting arm in a further hinge point, to obtain a vertical lifting path, in such a way that the length of the front part of the supporting arm between the hinge point where the guiding means is connected and a hinge point receiving the fork carrier is equal to the length of the guiding means plus a horizontal displacement of the fork carrier, the displacement corresponding to the horizontal distance between the place where the guiding means is joined to the vehicle frame and the place where the fork carrier is joined to the supporting arm, in the direction of travel.The length of the rear part of the supporting arm between the hinge point where the guiding means is connected and a hinge point where a rocker is connected is equal to the length of the guiding means plus a quantity directly dependent on the lifting height and the amount of horizontal displacement of the fork carrier.The optimum horizontal distance between the bearing of the lifting cylinder, the piston rod of which similarly engages in a hinge point in the supporting arm, and the hinge point where the free end of the rocker is fixed in the lower region of the vehicle frame is determined by the equality of the ratios: horizontal distance between the hinge point where the fork carrier is fixed in the supporting arm and the point of intersection of the working lines of the lifting cylinder and guiding means to the shortest distance between the working line of the rocker and that point of intersection, in the highest position of the load, and horizontal distance between the hinge point where the fork carrier is fixed in the supporting arm and the point of intersction of the working lines of the lifting cylinder and guiding means to the shortest distance between the working line of the rocker and that point of intersection, in a low position of the load, where the working lines of the lifting cylinder and guiding means intersect at right angles.The prerequisite for this is that the lifting cylinder engaging the rear part of the supporting arm stands vertical in its two end positions, and that the hinge point of the guiding means on the vehicle frame and the common hinge point of the supporting arm and rocker are on a horizontal line.
It is further necessary for the hinge points for connecting the fork carrier, the guiding means, the piston rod of the lifting cylinder and the rocker to the supporting arm to be in a straight line. For horizontal guidance and inclination of the forks the fork lift truck is functionally connected to an inclination cylinder mounted in the vehicle frame, by draw bars which are flexibly interconnected at the front part of the supporting arm by a pivotable linking plate. At its front end the supporting arm has a horizontal angled portion, leading to the centre of the vehicle and serving to mount the pivotable linking plate, and a further angled portion, adjoining the first one at right angles in the centre of the vehicle and providing a link with the fork carrier.The points where the draw bar and pressure bar are linked with the pivotable linking plate are arranged to pivot counter to and towards one another, about the longitudinal axis of the horizontal angled portion of the supporting arm leading to the centre of the vehicle, by known mechanical, electrical or hydraulic drive means, in which case the draw bar associated with the rocker has its lower end mounted in the vehicle frame and the inclination cylinder is omitted. This lifting apparatus requires a supporting arm which is heavy and expensive to construct, which does not allow the optimum free lift and which unfavourably affects the centre of gravity of the fork lift truck.
In a lifting scaffold known from
DD-SP 156 359, a connecting rod is joined at a hinge point to the guiding means, which is mounted in the hinge point in a support arranged detachably on the vehicle frame; the free end of the connecting rod is mounted in a hinge point on a balancing carriage, which is arranged on the vehicle frame for movement horizontally in the direction of travel. In this arrangement the rocker is further mounted at a hinge point and the inclination cylinder at another hinge point the cylinder being functionally connected to the draw bar by the adjusting lever and the rocker.The supporting arm and the draw bar are further arranged at one side, eccentrically outwards in a first vertical plane, the support, the guiding means, the lifting cylinder, the rocker, the draw bar and the balancing carriage with the inclination cylinder and adjusting lever are arranged in a second vertical plane, and the connecting rod is arranged in a third vertical plane. Finally, the draw bars and the adjusting lever are each arranged in pairs, symmetrically with the associated vertical plane.
Because of the large space requirement the various shifting support and hinge points of the lifting equipment are difficult to provide and require a large amount of material.
The problem underlying the invention is to provide a lifting apparatus, particularly for fork lift trucks, which will allow for an improvement in viewing conditions, an enlargement of the free lift, more accurate vertical guidance of the fork carrier and, on a reduction in the necessary width of the vehicle as a result of a compact construction, favourable positioning of the centre of gravity, thus increasing the possible applications for the apparatus.
According to the present invention there is provided a lifting apparatus, particularly for fork lift trucks, comprising a kinematic main system made up of a four link chain consisting of a vehicle frame, a guiding means, a supporting arm and a rocker, and a system stabilising the fork carrier which comprises draw bars which are arranged parallel and flexibly interconnected and the apparatus is arranged eccentrically at one side of the vehicle frame wherein a connecting rod is flexibly connected to the guiding means, the connecting rod being functionally connected to a balancing carriage, which is provided on the vehicle frame for horizontal movement in the direction of travel of the vehicle frame, the balancing carriage having an inclination cylinder linked with an adjusting lever which joins the rocker and the parallel draw bar, while the lifting cylinder mounted in the vehicle frame is pivotably connected to the supporting arm by its piston rod, the supporting arm being connected to a supporting means mounted on the vehicle frame with the fork carrier arranged at one end of the arm, said arm having a hinge point for the piston rod of the lifting cylinder, the support provided at the bottom of the lifting cylinder being arranged in a pocket formed in a side portion of the vehicle frame, and the other end of the supporting arm having a rocker head provided with hinge points for the draw bars and the rocker, said rocker being functionally connected by the balancing carriage to a guide rail which is fixed detachably onto the side portion of the frame.
The rocker head comprises a torsion member with plates for the two draw bars and plates for the rocker and the supporting arm, the plates are arranged on the torsion member perpendicular to their bearing holes, which are provided parallel with the longitudinal axis of the torsion member, and the shifting plates are undetachably interconnected by a cover plate, which extends longitudinally of the torsion member parallel with the axis of the bearing holes, partially surrounding the member.
The lifting cylinder has a bottom convex end mounted in a pivotably cross-piece with a universal ball joint, the pivot pins of which are arranged at both sides in bearing holes in the side walls of the pocket in the side portion.
The balancing carriage comprises a frame with the hinge point for the connecting rod, the hinge point for the rocker, the hinge point for the bearing of the inclination cylinder and further comprises two guide rollers arranged as a pair and also two side rollers provided as a pair, the guide rollers and the side rollers having a functional connection with the guide rail which is fixed detachably onto the upper belt of the side portion. The guide rail has a double T cross-section. The side portion is connected to the pocket for the lifting cylinder shifting support, in the front region by a bend
proof and torsion-proof upper transverse bar and a
detachable draw bar, and is connected to the
opposed side portion in a bend-proof and torsion
proof manner in the rear region by a box profile
and counterweight with asymmetrical weight
distribution.
A supporting means is arranged at the front ends of the two side portions of the vehicle frame, and comprises two supporting plates arranged symmetrically with the longitudinal axis of the vehicle and adapted to swing upwards, the supporting means being functionally connected to the fork carrier.
The rocker head serves to transmit power from the supporting arm to the rocker and also supports the bearing for the draw bars. Power and moment transmission within the rocker head is provided by the torsion member in conjunction with the shifting plates and the enclosing cover plate.
The rocker is mounted in the balancing carriage so that the compensating movement necessary for straightness can be made. In the balancing carriage the forces introduced by the rocker and connecting rod and the adjusting forces from the inclination cylinder have to be transmitted to the guide rail via the guiding rollers and side rollers.
The balancing carriage encloses the guide rail on both sides with its frame. In addition, when the direction of the force changes, an additional pressure roller, bearing on the upper flange of the guide rail, may be arranged in the frame of the balancing carriage to prevent the guide rollers from being lifted off the lower flange of the guide rail. All the forces introduced by the lifting apparatus are absorbed by the vehicle frame and transmitted through the vehicle wheels to the roadway. The lifting cylinder, mounted for movement in three dimensions, transmits its compressive forces through the pivot pins in the bearing holes of the pocket in the side portion as transverse and vertical forces. The guiding forces of the balancing carriage are introduced as transverse and vertical forces through the guide rail into the upper belt of the side portion.The support plates mounted on the front ends of the two side portions are swung down only during travel and absorb the forces from the fork carrier placed on them. The torsion and bending moments resulting from these forces and also the transverse, vertical and longitudinal forces have to be transmitted from the side portion to the other side portion without torsion or bending via a front and rear transverse connection in order to compensate. This is done in the front transverse connection by the bend-proof upper transverse bar and the detachable draw bar, while in the rear transverse connection the forces are transmitted by the box profile and the counterweight. The advantage of this arrangement lies in the space saving and material saving construction, which makes it possible to produce the fork lift truck with good viewing conditions, small overall height and width, a large free lift and a small turning radius.
An embodiment of the invention will now be described, by way of an example, with reference to the accompanying drawings, in which: Figure 1 is a section taken along the line A-A through the fork lift truck shown in Figure 2;
Figure 2 is a front elevation of the fork lift truck with the lifting apparatus in the lowered position;
Figure 3 is a section taken along the line B-B indicated in Figure 1;
Figure 4 is a section taken along the line C-C indicated in Figure 1;
Figure 5 is a section taken along the line D-D indicated in Figure 1;
Figure 6 is a section taken along the line E-E indicated in Figure 7;
Figure 7 is a plan view of the vehicle frame;;
Figure 8 is a section taken along the line F-F indicated in Figure 6;
Figure 9 is a section taken along the line G-G indicated in Figure 6.
As shown in Figures 1 and 2, a support 27 is arranged detachably and eccentrically on the vehicle frame 1. A guiding means 3, which is functionally connected by a supporting arm 11 to a fork carrier 1 8 and a rocker 5, is mounted in the support 27 at a hinge point 2. A connection rod 29 is mounted on the guiding means 3 at a hinge point 28 and engages a balancing carriage 31 at a hinge point 30. The balancing carriage 31 is arranged on the vehicle frame 1 for horizontal movement in the direction of travel. The rocker 5 and an adjusting lever 25 are fully mounted in the frame at a hinge point 32, and an inclination cylinder 9 is connected at the hinge point 33.The inclination cylinder 9 is functionally connected by an adjusting lever 26 to the lever 25; and through a bar 23 on the fork carrier 1 8. A rocker head 34 has the hinge points for the supporting arm 11, the rocker 5 and the draw bars 23 and 25. A lifting cylinder 7, which is linked to the arm 11 by its piston rod 1 6 is mounted at the lower end in a cylinder shifting means 35, the means 35 being arranged in a pocket 36 in a side part 37 of the vehicle frame 1. The hinge point 32 for the rocker 5, the hinge point 30 for the connecting rod 29 and the hinge point 33 for the inclination cylinder 9 are provided in the balancing carriage 31, which is functionally connected to guide rails 38.Figure 2 shows the fork carrier 1 8 and both supporting means 39, comprising both shifting blocks 40 and associated hinge supporting plates 41. Figure 3 shows the rocker head 34, comprising a torsion member 42, three plates 43 for supporting the rocker 5 and arm 11, and the plates 44 for the draw bars 23 and 25. The plates 43 and 44 are arranged on the torsion member 42, at right angles with their bearing holes which are provided parallel with the longitudinal axis of the member 42. The plates 43 and 44 are further joined together undetachably by a cover plate 45, which extends longitudinally of the torsion member 42 parallel with the axis of the bearing holes, partly encompassing the torsion member 42.
The convex bottom end of the lifting cylinder 7 (see Figure 4) is mounted in a pivotably crosspiece 46 with a universal ball joint 47. The pivot pins 48 of the cross-piece 46 are arranged at both sides in bearing holes 49 in the side walls of the pocket 36 of the side portion 37.
The paired arrangement of the guide rollers 50 on the frame 51 of the balancing carriage 37 can be seen from Figure 5; the frame 51 encloses the guide rail 38 on both sides. The side rollers 52, also arranged in pairs on the frame 51, are illustrated in Figure 1.
Figure 6 shows the guide rail 38, joined detachably to the upper part of the side portion 37. The arrangement of the pocket 36 with one of the two bearing holes 49 in the side portion 37 can also be seen from the Figure.
The side portion 37 shown in Figure 7 is joined to a side portion 53 in a torsion-proof and bendproof manner, both in the front region and in the region of a counterweight 54. In Figure 8 both bearing holes 49 can be seen in the pocket 36 of the side portion 37.
Figure 9 represents the front transverse connection between the side portion 37 and the side portion 53 by an upper transverse bar 55, which is bend-proof and torsion-proof, and by a detachable draw bar 56.
The arrangement operates as follows: The forces required to pick up the load are transmitted from the fork carrier 18 via the supporting arm 11, through the rocker head 34 to the rocker 5. The rocker head 34 simultaneously takes over the bearing load of the draw bars 23 and 25. Power and moment transmission within the rocker head 34 is effected by the tension member 42 in conjunction with the plates 43 and 44 and the enclosing cover plate 45.
The rocker 5 is mounted in the balancing carriage 31 so that it can make the compensating movement required for a straight guiding action.
In the balancing carriage 31 the forces introduced at the hinge point 32 by the rocker 5 and at the hinge point 30 by the connecting rod 29, and also the adjusting forces introduced at the hinge point 33 by the inclination cylinder 9, are transmitted via the guide rollers 50 and side rollers 52 to the guide rail 38. For the purpose of mounting the rollers and for power transmission therefore, the frame 51 of the balancing carriage 31 encloses the guide rail 38 on both sides. When the direction of the force changes, it is possible to arrange an additional pressure roller (not shown), bearing on the upper flange of the guide rail 38, in the frame 51 of the carriage 31, in order to prevent the guide rollers 50 from being lifted off the lower flange of the guide rail 38.All the forces introduced by the lifting equipment are absorbed by the vehicle frame 1 and transmitted via the vehicle wheels to the roadway. The vehicle frame 1 is unevenly loaded on account of the asymmetric construction of the lifting scaffold. The lifting cylinder 7, which is mounted for movement in three dimensions and flexibly connected to the supporting arm 11 by its piston rod 16, transmits its compressive forces via the lifting cylinder support 35 with the cross-piece 46, including the universal ball joint 47 and via the pivot pins 48, as transverse and vertical forces in the bearing holes 49 of the pocket 36 in the side portion 37. The guiding forces of the balancing carriage 31 are introduced as transverse and vertical forces through the guide rail 38 into the upper part of the side portion 37. The supporting plates 42 mounted at the front ends of the two side portions 37 and 53 are swung up during the lifting operation, so that the fork carrier 18 can pass unobstructed. When the fork carrier 1 8 is lowered into the travelling position, the supporting plates 41 are swung down and support the carrier 1 8. Thus all forces generated by the load, including jolts caused by travel, are transmitted directly through the two supporting plates 41 and their shifting blocks 40 to the side portions 37 and 53.The forces emanating from the bearing of the lifting scaffold, the guide rail 38, the lifting cylinder support 35 and the supporting means 39, together with the resulting torsional and bending movements and transverse, vertical and longitudinal forces, must compensate for the asymmetric introduction of the force by being passed through a front and rear transverse connection, without any torsion or bending from the side portion 37 to the side portion 53. This is done in the front transverse connection by the bend-proof upper transverse bar 55 and the detachable draw bar 56, while in the rear transverse connection the forces and moments are transmitted independent of the counterweight 54.
As a result of the supporting means 39, additional forces from the travelling motion are passed not through the lifting gear but directly into the vehicle frame 1. This makes it possible to have material saving and space saving dimensions for the main supporting elements of the lifting gear.
The favourable construction of the rocker head 34 with the torsion member 42 also results in a saving of space and material with the forces arising, to say nothing of convenience in manufacture. Power transmission from the balancing carriage 31 to the guide rails 38 with the division into vertical and lateral forces enables a simple, space-saving construction to be obtained since the guide rail 38 also takes over an additional supporting function for the side portion 37.
The length of the lifting cylinder 7 necessitates having the pocket 36 in the side portion 37. As a result of the closed box profile in that location becomes an open profile which is incapable of transmitting strong torsional moments. The forces introduced in the front region of the side portion 37 are therefore transmitted through the transverse connection of the vehicle which has a favourable effect on the dimensioning of the bendproof crossbar 55 and detachable draw bar 56.
The rear transverse connection of the vehicle frame 1 is formed in a torsion-proof and bendproof manner by the box profile and by the counterweight 54 with its asymmetrical distribution of mass.
The advantages of the lifting apparatus lie in the favourable arrangement of the components mentioned, which produce a smaller overall width for the vehicle while at the same time increasing the free lift and ground clearance and improving visibility for the driver.
The centre of gravity of the vehicle moreover moves in the direction of the counterweight 54, so that a further weight reduction is achieved while stability is fully maintained.
Claims (9)
1. A lifting apparatus, particularly for fork lift trucks, comprising a kinematic main system made up of a four link chain consisting of a vehicle frame, a guiding means, a supporting arm and a rocker, and a system stabilising the fork carrier which comprises draw bars which are arranged parallel and flexibly interconnected and the apparatus is arranged eccentrically at one side of the vehicle frame wherein a connecting rod is flexibly connected to the guiding means, the connecting rod being functionally connected to a balancing carriage, which is provided on the vehicle frame for horizontal movement in the direction of travel of the vehicle frame, the balancing carriage having an inclination cylinder linked with an adjusting lever which joins the rocker and the parallel draw bar, while the lifting cylinder mounted in the vehicle frame is pivotably connected to the supporting arm by its piston rod, the supporting arm being connected to a supporting means mounted on the vehicle frame with the fork carrier arranged at one end of the arm, said arm having a hinge point for the piston rod of the lifting cylinder, the support provided at the bottom of the lifting cylinder being arranged in a pocket formed in a side portion of the vehicle frame, and the other end of the supporting arm having a rocker head provided with hinge points for the draw bars and the rocker, said rocker being functionally connected by the balancing carriage to a guide rail which is fixed detachably onto the side portion of the frame.
2. A lifting apparatus as claimed in claim 1, in which the rocker head compares a torsion member provided with plates for supporting the two draw bars and plates for supporting the rocker and the supporting arm, said plates being arranged on the torsion member perpendicular to their bearing holes, which are parallel with the longitudinal axis of the torsion member, and said plates being undetachably interconnected by a cover plate, which extends longitudinally of the torsion member parallel with the axis of the bearing holes and partially surrounding the torsion member.
3. A lifting apparatus as claimed in claim 1 or claim 2, in which the lifting cylinder has a bottom convex end mounted in a pivotable cross-piece by a universal ball joint, the pivot pins of the crosspiece being arranged at both sides thereof in bearing holes provided in the side walls of the pocket formed in the side portion of the vehicle frame.
4. A lifting apparatus as claimed in any one of claims 1 to 3, in which the balancing carriage comprises a frame with a hinge point for the connecting rod, the hinge point for the rocker, the hinge point for the bearing of the inclination cylinder and further comprises two guide rollers arranged as a pair and also two side rollers provided as a pair, the guide rollers and side rollers having a functional connection with the guide rail which is fixed detachably onto the upper part of the side portion of the vehicle frame.
5. A lifting apparatus as claimed in any one of claims 1 to 4, in which the guide rail has a double
T cross-section.
6. A lifting apparatus as claimed in any one of claims 1 to 5, in which the side portion of the vehicle frame is connected to the pocket for the lifting cylinder support, in the front region is connected by a bend-proof and torsion-proof upper transverse bar and a detachable draw bar to an opposed side portion of the vehicle frame and in the rear region by a box profile and counterweight with asymmetrical weight distribution.
7. A lifting apparatus as claimed in any one of claims 1 to 6, in which a supporting means is arranged at the front ends of the two side portions of the vehicle frame, and comprises two blocks arranged symmetrically with the longitudinal axis of the vehicle, with supporting plates flexibly connected to the blocks and adapted to swing upwards, the supporting means being functionally connected to the fork carrier.
8. A lifting apparatus substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
9. A fork lift truck provided with a lifting apparatus as claimed in any preceding claim.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD24500982A DD225854A3 (en) | 1982-11-18 | 1982-11-18 | LIFTING DEVICE, ESPECIALLY FOR FORKLIFTS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8328245D0 GB8328245D0 (en) | 1983-11-23 |
| GB2130171A true GB2130171A (en) | 1984-05-31 |
| GB2130171B GB2130171B (en) | 1986-02-12 |
Family
ID=5542552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08328245A Expired GB2130171B (en) | 1982-11-18 | 1983-10-21 | Lifting apparatus particularly for fork lift trucks |
Country Status (4)
| Country | Link |
|---|---|
| DD (1) | DD225854A3 (en) |
| DE (1) | DE3333170A1 (en) |
| FR (1) | FR2536379B1 (en) |
| GB (1) | GB2130171B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2574388A1 (en) * | 1984-12-07 | 1986-06-13 | Takraf Schwermasch | LIFTING DEVICE, IN PARTICULAR FOR FORK-LOADING FORKLIFTS |
| FR2614288A1 (en) * | 1987-04-23 | 1988-10-28 | Takraf Schwermasch | LIFTING DEVICE, ESPECIALLY FOR FORKLIFT TRUCK. |
| EP0630779A2 (en) * | 1993-06-24 | 1994-12-28 | Josef Paul | Utility vehicle for loading and unloading containers and transfer system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB821383A (en) * | 1957-02-11 | 1959-10-07 | Yale & Towne Mfg Co | Power-operated lifting truck |
| GB1007498A (en) * | 1962-01-24 | 1965-10-13 | Ormig | Improvements in or relating to jib cranes |
| GB1339011A (en) * | 1970-01-14 | 1973-11-28 | Shaw Trew & Smith Ltd | Crane |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1182493A (en) * | 1957-02-11 | 1959-06-25 | Yale & Towne Mfg Co | Lifting mechanism for industrial trolley |
| US3184086A (en) * | 1963-05-15 | 1965-05-18 | Le Grand H Lull | High lift mobile loader |
| US3257014A (en) * | 1964-09-14 | 1966-06-21 | Sturdivant Ag | Mobile loader |
| DE2128073C3 (en) * | 1971-06-05 | 1975-06-26 | H F M Hohenloher Fahrzeuge- Und Maschinenvertrieb Gmbh, 7183 Langenburg | Mobile crane-like lift truck |
-
1982
- 1982-11-18 DD DD24500982A patent/DD225854A3/en not_active IP Right Cessation
-
1983
- 1983-09-14 DE DE19833333170 patent/DE3333170A1/en not_active Withdrawn
- 1983-10-21 GB GB08328245A patent/GB2130171B/en not_active Expired
- 1983-11-16 FR FR8318205A patent/FR2536379B1/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB821383A (en) * | 1957-02-11 | 1959-10-07 | Yale & Towne Mfg Co | Power-operated lifting truck |
| GB1007498A (en) * | 1962-01-24 | 1965-10-13 | Ormig | Improvements in or relating to jib cranes |
| GB1339011A (en) * | 1970-01-14 | 1973-11-28 | Shaw Trew & Smith Ltd | Crane |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2574388A1 (en) * | 1984-12-07 | 1986-06-13 | Takraf Schwermasch | LIFTING DEVICE, IN PARTICULAR FOR FORK-LOADING FORKLIFTS |
| GB2168678A (en) * | 1984-12-07 | 1986-06-25 | Takraf Schwermasch | Lifting apparatus, in particular for fork-lift trucks |
| FR2614288A1 (en) * | 1987-04-23 | 1988-10-28 | Takraf Schwermasch | LIFTING DEVICE, ESPECIALLY FOR FORKLIFT TRUCK. |
| EP0630779A2 (en) * | 1993-06-24 | 1994-12-28 | Josef Paul | Utility vehicle for loading and unloading containers and transfer system |
| EP0630779A3 (en) * | 1993-06-24 | 1995-03-22 | Josef Paul | Utility vehicle for loading and unloading containers and transfer system. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2130171B (en) | 1986-02-12 |
| DE3333170A1 (en) | 1984-05-24 |
| FR2536379A1 (en) | 1984-05-25 |
| FR2536379B1 (en) | 1986-09-19 |
| GB8328245D0 (en) | 1983-11-23 |
| DD225854A3 (en) | 1985-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |