US20210163274A1 - Lifting device - Google Patents
Lifting device Download PDFInfo
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- US20210163274A1 US20210163274A1 US17/169,789 US202117169789A US2021163274A1 US 20210163274 A1 US20210163274 A1 US 20210163274A1 US 202117169789 A US202117169789 A US 202117169789A US 2021163274 A1 US2021163274 A1 US 2021163274A1
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- US
- United States
- Prior art keywords
- lifting device
- arms
- horizontal
- load carrying
- support structure
- 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.)
- Abandoned
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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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
- A01B59/04—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor
- A01B59/042—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor
- A01B59/043—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines pulled or pushed by a tractor having pulling means arranged on the rear part of the tractor supported at three points, e.g. by quick-release couplings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
- A01B59/06—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
- A01B59/061—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors specially adapted for enabling connection or disconnection controlled from the driver's seat
- A01B59/062—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors specially adapted for enabling connection or disconnection controlled from the driver's seat the connection comprising a rigid interface frame on the tractor
-
- 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
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/24—Electrical devices or systems
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
Definitions
- the present invention generally relates to a device for lifting and moving heavy objects such as vehicles, cargo and equipment placed on a platform while maintaining the platform and the objects in a level position.
- Forklifts are commonly used to pick up and transport pallets with cargo loads stacked onto them.
- the forklifts are typically equipped with two parallel arms configured to slide under the pallet and with a hydraulic or electrical lift configured to raise the arms and the pallet.
- One disadvantage of forklifts is the lack of versatility as they are not configured to pick up and haul vehicles that are disposed on platforms, such as snow blowers, cars or tractors. It would, thus be desirable to provide a lift that could be used for lifting and transporting cargo having a wide spectrum of shapes, weights and sizes. It is important that the cargo be kept in a level position or slightly tilted backward so as not to create a hazard of the cargo falling as it is being transported. It would also be desirable that the cargo carrying platforms be configured to tether onto and to untether from the pickup and transporting vehicle safely and expeditiously.
- a lifting device comprises: a support structure; a first lower horizontal arm pivotally attached at a first end to the support structure; a second lower horizontal arm pivotally attached at a first end to the support structure, the second lower horizontal arm being disposed in substantially the same horizontal plane as the first lower horizontal arm; a first upper horizontal arm pivotally attached at a first end to the support structure, the first upper horizontal arm being disposed above the first lower horizontal arm; a second upper horizontal arm pivotally attached at a first end to the support structure, the second upper horizontal arm being disposed above the second lower horizontal arm and being disposed in substantially the same horizontal plane as the first upper horizontal arm; a first vertical arm having at least one portion disposed perpendicularly with the first lower horizontal arm and at least one portion disposed perpendicularly with the first upper horizontal arm, the first vertical arm being pivotally attached at a first end to about a midpoint of the first lower horizontal arm; a second vertical arm having at least one portion disposed perpendicularly with the second lower horizontal arm and at
- FIG. 1 is a side view of the lifting device according to a first embodiment of the present invention.
- FIG. 2 is a front view of the lifting device according to a first embodiment of the present invention.
- FIG. 3 is a side perspective view of the lifting device according to a first embodiment of the present invention.
- FIG. 4 illustrates a side view of the lifting device according to a second embodiment of the present invention.
- FIG. 5 illustrates a front view of the lifting device according to a second embodiment of the present invention.
- FIG. 6 is a side perspective view of the lifting device according to a second embodiment of the present invention.
- FIG. 7 is a side view of a coupling component for attaching a forklift or a platform to the lifting device.
- FIG. 8 portrays a component of the lifting device.
- FIGS. 9A to 9D represent various views and configurations of a first embodiment of a load carrying assembly that attaches to the lifting device.
- FIGS. 10A and 10B show a second embodiment of a load carrying assembly that attaches to the lifting device.
- FIG. 11 shows the first embodiment of the load carrying assembly in position for attaching to the lifting device.
- FIG. 12 illustrates the second embodiment of the load carrying assembly in position for attaching to the lifting device.
- FIG. 13 illustrates the load carrying assembly of the first embodiment combined with the lifting device in a first configuration.
- FIG. 14 illustrates the load carrying assembly of the second embodiment combined with the lifting device in a first configuration.
- FIG. 15 depicts the load carrying assembly of the first embodiment combined with the lifting device in a second configuration.
- FIG. 16 depicts the load carrying assembly of the first embodiment combined with the lifting device in a third configuration.
- FIG. 17 portrays the load carrying assembly of the second embodiment combined with the lifting device in a second configuration.
- FIG. 18 portrays the load carrying assembly of the second embodiment combined with the lifting device in a third configuration.
- FIG. 19 illustrates the embodiment of the load carrying assembly described in FIG. 12 combined with the lifting device in a fourth configuration.
- FIG. 20 illustrates the embodiment of the load carrying assembly described in FIG. 12 combined with the lifting device in a fifth configuration.
- FIG. 21 represents the embodiment of the load carrying assembly described in FIG. 12 combined with the lifting device in a sixth configuration.
- FIG. 22 shows the load carrying assembly described in FIG. 12 being detached from the lifting device.
- FIG. 23 is a side perspective view of the lifting device according to a third embodiment of the present invention.
- FIG. 24 is a side perspective view of the lifting device according to a fourth embodiment of the present invention.
- FIGS. 1-24 illustrate the embodiments of the lifting device 10 of the present invention.
- the lifting device 10 contains two lower horizontal arms 17 A and 17 B disposed substantially in parallel and in the same horizontal plane to one another.
- the lifting device 10 also comprises two horizontal upper arms 19 A and 19 B disposed substantially in parallel to one another and in about the same horizontal plane.
- Upper horizontal arms 19 A and 19 B are disposed in a horizontal plane that is above that of horizontal arms 17 A and 17 B and located in vertical planes that are between the vertical planes of horizontal arms 17 A and 17 B.
- each of horizontal arms 17 A, 17 B, 19 A and 19 B is attached to a part of the lifting device 10 support structure 14 .
- the attachment may be done by pins inserted into holes drilled into the arms and in the support structure and reinforced by bolts.
- the lower arms 17 A and 17 B are pivotally attached to support members 36 A and 36 B by pins 18 A and 18 B respectively and the upper arms 19 A and 19 B are pivotally attached to the support structure 14 respectively by pins 41 A and 41 B (not shown).
- Vertical arms 16 A and 16 B are attached to and configured for lifting the horizontal arms 17 A and 17 B.
- Each of the vertical arms 16 A and 16 B contains a top portion 16 AT and 16 BT respectively that are disposed substantially vertically, a middle portion 16 AM and 16 BM angled at about 45 degrees toward horizontal arms 17 A and 17 B and a bottom substantially vertical portion 16 AB and 16 BB as shown in FIG. 2 .
- a shaft 26 connects the top portions of the vertical arms 16 AT and 16 BT while the bottom vertical portions 16 AB and 16 BB of vertical arms 16 A and 16 B are pivotally attached to about a middle of each lower horizontal arm 17 A and 17 B by pins 24 A and 24 B respectively that are reinforced by bolts.
- a lifting mechanism is engaged with the shaft 26 such that exerting an upward pull on the shaft 26 results in an upward movement of the vertical arms 16 A and 16 B and upward pivoting of the lower horizontal arms 17 A and 17 B.
- the lifting mechanism may be powered in several ways.
- a cable 13 wound onto shaft 26 is actuated by winch 12 that is disposed on base 45 of the supporting structure 14 of the lifting device 70 as shown in FIG. 24 .
- FIG. 3 illustrates an attachment embodiment of the lifting device 10 to the vehicle.
- Tube 15 on the lifting device 10 is configured for inserting into tube 11 located on the vehicle and attached by a bolted pin passed through holes 25 A and 25 B in tube 11 and holes 27 A and 27 B (not shown) in tube 15 .
- a piston 46 operated hydraulically or electrically is installed on the support structure of the lifting device 60 as shown in FIG. 23 .
- the forward ends of the horizontal arms 17 A, 17 B, 19 A and 19 B are adapted for attaching to a load carrying assembly 20 such as a platform of fork lift.
- the load carrying assembly 20 comprises a vertical support 42 , a platform 31 , and upper extensions 23 A and 23 B and lower extensions 23 C and 23 D attached to the vertical support 42 .
- Each extension 23 A, 23 B, 23 C and 23 D of the load carrying assembly 20 contains a center hole.
- the platform 31 may contain a cargo or be utilized as a forklift for picking up a pallet 37 on forks 43 that carries a load 38 .
- a containment member 44 is attached to the vertical support 42 .
- Coupling member 28 to which an upper extensions 35 A and 35 B (not shown) and lower extension 35 C and 35 D (also not shown) are attached, is wedged inside the containment member 44 .
- the placement of the extensions 35 A, 35 B, 35 C and 35 C is similar to that illustrated in FIGS. 10A-10B .
- Each extension 35 A, 35 B, 35 C and 35 C contains a center hole.
- the attachment of load carrying assembly 20 to the lifting device 10 is made by: (i) lining up the holes 21 A and 21 B of the lifting device 10 upper arms 19 A and 19 B with the holes of extensions 23 A and 23 B respectively, (ii) lining up the holes 22 A and 22 B of the lifting device 10 lower arms 17 A and 17 B with the holes of extensions 23 C and 23 D respectively, and (iii) inserting bolted pins 39 through all the lined up holes to lock the attachment of the load carrying assembly 20 to the lifting device 10 .
- the combined load carrying assembly 20 and lifting device 40 is shown in various configurations in FIGS. 13, 15 and 16 .
- the attachment of load carrying assembly 30 to the lifting device 10 is made by: (i) lining up the holes 21 A and 21 B of the lifting device 10 upper arms 19 A and 19 B with the holes of extensions 35 A and 35 B on the coupling member 28 respectively, (ii) lining up the holes 22 A and 22 B of the lifting device 10 lower arms 17 A and 17 B with the holes of extensions 35 C and 35 D respectively, and (iii) inserting bolted pins 39 through all the lined up holes to lock the attachment of the load carrying assembly 30 to the lifting device 10 .
- the combined load carrying assembly 30 and lifting device 50 is shown in various configurations in FIGS. 14, 17 and 18 .
- Engaging the lifting mechanism to exert an upward pull on shaft 26 while the load carrying assembly is attached to the lifting device creates an upward pull on vertical arms 16 A and 16 B and lower horizontal arms 17 A and 17 B that pivot upward since they are attached to vertical arms 16 A and 16 B.
- the upward pivoting of the lower horizontal arms 17 A and 17 B also causes the upward lifting of the load carrying assembly as it is attached to the lower horizontal arms 17 A and 17 B and causes the upward lifting of the upper horizontal arms 19 A and 19 B as they are attached to the load carrying assembly as shown in FIGS. 15 and 17 .
- This allows the load carrying assembly to be transported to its destination where the lifting mechanism is engaged to lower the load carrying assembly and place it on the ground such as it is shown in FIGS. 16 and 18 .
- the attachment of the lifting device 10 to the load carrying assembly that is accomplished by inserting bolted pins through the upper arms 19 A and 19 B, the lower arms 17 A and 17 B and the extensions 23 A, 23 B, 23 C and 23 D or 35 A, 35 B, 35 C and 35 D must be firm yet allow some pivoting in lifting the arms and the load carrying assembly. This may result in premature wear and tear on the arms, however.
- horizontal lift arms 17 A, 17 B, 19 A and 19 B are configured to be extendable and retractable.
- Vertical lift arms 16 A and 16 B may also be configured to be extendable and retractable in order to enable adjusting the positions of the horizontal arms relative to the vertical arms for optimum stability of the lifting device.
- Lift arm extension may be accomplished by electric actuation, hydraulic power or spring loading.
- An extension member 32 is adapted to move forward or rearward to bring about lengthening or shortening an arm.
- FIG. 8 shows an embodiment of an extendable and retractable arm.
- FIGS. 19, 20, 21 and 22 illustrate use configurations for the lifting device 10 utilizing a coupling member 28 and utilizing extendable and retractable upper horizontal arms 19 A and 19 B. In order to tilt the load carrying assembly 30 backward, upper horizontal arms 19 A and 19 B are retracted while in order to tilt the load carrying assembly 30 forward, the horizontal arms 19 A and 19 B are extended toward the load carrying assembly 30 .
- tilting the load carrying assembly 30 backward may also be achieved by extending the lower lift arms 17 A and 17 B extended toward the load carrying assembly 30
- tilting the load carrying assembly 30 forward may be achieved by retracting the lower lift arms 17 A and 17 B.
- the use of the retractable and extendable arms to tilt the load carrying assembly 30 improves the stability of the load carrying assembly 30 in transportation and in discharging the load.
- the downward tilting of the load carrying assembly 30 enables detaching the load carrying assembly 20 while leaving coupling member 28 attached to arms 17 and 19 as shown in FIGS. 21 and 22 .
- This enables the load carrying assembly 30 containing the coupling member 28 to couple with and uncouple from various load carrying assemblies with speed and efficiency.
- Attachment of the load carrying assembly 20 that does not contain a coupling member to the lifting device 10 is generally suitable for a more permanent attachment to the lifting device 10 , while attaching the load carrying assembly 30 to the lifting device 10 using a coupling member is advantageous for frequent attachments to multiple platforms.
- FIGS. 4-6 portray various views of the coupling member 28 attached to the lifting device 10 . It is also noted that the lifting device 10 may contain guard plates 29 A and 29 B (not shown) that cover the sides of the lifting device support structure 14 .
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Abstract
A lifting device for platforms carrying a load is disclosed. A winch or piston is engaged with two vertical arms connected to two horizontal arms configured for attaching to a load carrying assembly such that exerting an upward force on the two vertical arms causes the horizontal arms to pivot upward to lift the load carrying assembly which enables transporting the platform and the load on it to another location. The lifting device is configured to quickly attach to and detach from the load carrying platform and for maintaining a level position during transportation. The horizontal arms are configured for retracting and expending which enables the tilting of the load carrying assembly backward or forward as needed for improved transportation stability and load discharge.
Description
- The present invention generally relates to a device for lifting and moving heavy objects such as vehicles, cargo and equipment placed on a platform while maintaining the platform and the objects in a level position.
- Forklifts are commonly used to pick up and transport pallets with cargo loads stacked onto them. The forklifts are typically equipped with two parallel arms configured to slide under the pallet and with a hydraulic or electrical lift configured to raise the arms and the pallet. One disadvantage of forklifts is the lack of versatility as they are not configured to pick up and haul vehicles that are disposed on platforms, such as snow blowers, cars or tractors. It would, thus be desirable to provide a lift that could be used for lifting and transporting cargo having a wide spectrum of shapes, weights and sizes. It is important that the cargo be kept in a level position or slightly tilted backward so as not to create a hazard of the cargo falling as it is being transported. It would also be desirable that the cargo carrying platforms be configured to tether onto and to untether from the pickup and transporting vehicle safely and expeditiously.
- In one aspect of the present invention, a lifting device comprises: a support structure; a first lower horizontal arm pivotally attached at a first end to the support structure; a second lower horizontal arm pivotally attached at a first end to the support structure, the second lower horizontal arm being disposed in substantially the same horizontal plane as the first lower horizontal arm; a first upper horizontal arm pivotally attached at a first end to the support structure, the first upper horizontal arm being disposed above the first lower horizontal arm; a second upper horizontal arm pivotally attached at a first end to the support structure, the second upper horizontal arm being disposed above the second lower horizontal arm and being disposed in substantially the same horizontal plane as the first upper horizontal arm; a first vertical arm having at least one portion disposed perpendicularly with the first lower horizontal arm and at least one portion disposed perpendicularly with the first upper horizontal arm, the first vertical arm being pivotally attached at a first end to about a midpoint of the first lower horizontal arm; a second vertical arm having at least one portion disposed perpendicularly with the second lower horizontal arm and at least one portion disposed in perpendicular with the second upper horizontal arm, the second vertical arm being pivotally attached at a first end to about a midpoint of the first lower horizontal arm; a shaft having a first end attached to a second end of the first vertical arm, the shaft having a second end attached to a second end of the second vertical arm; and a lifting mechanism engaged with the shaft, the lifting mechanism adapted for exerting an upward pulling force on the shaft.
- These and other features, aspects and advantages of the present invention will become better understood with reference to the following drawings, description and claims.
-
FIG. 1 is a side view of the lifting device according to a first embodiment of the present invention. -
FIG. 2 is a front view of the lifting device according to a first embodiment of the present invention. -
FIG. 3 is a side perspective view of the lifting device according to a first embodiment of the present invention. -
FIG. 4 illustrates a side view of the lifting device according to a second embodiment of the present invention. -
FIG. 5 illustrates a front view of the lifting device according to a second embodiment of the present invention. -
FIG. 6 is a side perspective view of the lifting device according to a second embodiment of the present invention. -
FIG. 7 is a side view of a coupling component for attaching a forklift or a platform to the lifting device. -
FIG. 8 portrays a component of the lifting device. -
FIGS. 9A to 9D represent various views and configurations of a first embodiment of a load carrying assembly that attaches to the lifting device. -
FIGS. 10A and 10B show a second embodiment of a load carrying assembly that attaches to the lifting device. -
FIG. 11 shows the first embodiment of the load carrying assembly in position for attaching to the lifting device. -
FIG. 12 illustrates the second embodiment of the load carrying assembly in position for attaching to the lifting device. -
FIG. 13 illustrates the load carrying assembly of the first embodiment combined with the lifting device in a first configuration. -
FIG. 14 illustrates the load carrying assembly of the second embodiment combined with the lifting device in a first configuration. -
FIG. 15 depicts the load carrying assembly of the first embodiment combined with the lifting device in a second configuration. -
FIG. 16 depicts the load carrying assembly of the first embodiment combined with the lifting device in a third configuration. -
FIG. 17 portrays the load carrying assembly of the second embodiment combined with the lifting device in a second configuration. -
FIG. 18 portrays the load carrying assembly of the second embodiment combined with the lifting device in a third configuration. -
FIG. 19 illustrates the embodiment of the load carrying assembly described inFIG. 12 combined with the lifting device in a fourth configuration. -
FIG. 20 illustrates the embodiment of the load carrying assembly described inFIG. 12 combined with the lifting device in a fifth configuration. -
FIG. 21 represents the embodiment of the load carrying assembly described inFIG. 12 combined with the lifting device in a sixth configuration. -
FIG. 22 shows the load carrying assembly described inFIG. 12 being detached from the lifting device. -
FIG. 23 is a side perspective view of the lifting device according to a third embodiment of the present invention. -
FIG. 24 is a side perspective view of the lifting device according to a fourth embodiment of the present invention. - The following detailed description is of the best currently contemplated modes of carrying out exemplary embodiments of the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention.
- It is the object of the present invention to provide a lifting device adapted for attaching to a platform configured for lifting and carrying heavy loads including, but not limited to, cargo and vehicles, and for lifting and transporting the platform such that the platform is maintained in a level position to minimize the risk of load droppage off the platform. It is also the object of the present invention to provide a lifting device configured to tether onto and untether off various load carrying platforms quickly and efficiently.
-
FIGS. 1-24 illustrate the embodiments of thelifting device 10 of the present invention. Thelifting device 10 contains two lowerhorizontal arms lifting device 10 also comprises two horizontalupper arms - Upper
horizontal arms horizontal arms horizontal arms - One end of each of
horizontal arms lifting device 10support structure 14. The attachment may be done by pins inserted into holes drilled into the arms and in the support structure and reinforced by bolts. - The
lower arms members pins upper arms support structure 14 respectively bypins 41A and 41B (not shown). -
Vertical arms horizontal arms vertical arms horizontal arms FIG. 2 . Ashaft 26 connects the top portions of the vertical arms 16AT and 16BT while the bottom vertical portions 16AB and 16BB ofvertical arms horizontal arm pins - A lifting mechanism is engaged with the
shaft 26 such that exerting an upward pull on theshaft 26 results in an upward movement of thevertical arms horizontal arms - A
cable 13 wound ontoshaft 26 is actuated bywinch 12 that is disposed onbase 45 of the supportingstructure 14 of thelifting device 70 as shown inFIG. 24 . - The
winch 12 actuating thecable 13 is installed on a vehicle and thelifting device 10 is attached to the vehicle.FIG. 3 illustrates an attachment embodiment of thelifting device 10 to the vehicle.Tube 15 on thelifting device 10 is configured for inserting intotube 11 located on the vehicle and attached by a bolted pin passed throughholes tube 11 andholes 27A and 27B (not shown) intube 15. - A
piston 46 operated hydraulically or electrically is installed on the support structure of thelifting device 60 as shown inFIG. 23 . - The forward ends of the
horizontal arms load carrying assembly 20 such as a platform of fork lift. In one embodiment portrayed inFIGS. 9A-9D , theload carrying assembly 20 comprises avertical support 42, aplatform 31, andupper extensions lower extensions vertical support 42. Eachextension load carrying assembly 20 contains a center hole. Theplatform 31 may contain a cargo or be utilized as a forklift for picking up apallet 37 onforks 43 that carries aload 38. - In another load carrying
assembly embodiment 30, acontainment member 44 is attached to thevertical support 42. Couplingmember 28, to which anupper extensions 35A and 35B (not shown) andlower extension 35C and 35D (also not shown) are attached, is wedged inside thecontainment member 44. The placement of theextensions FIGS. 10A-10B . Eachextension - The attachment of
load carrying assembly 20 to thelifting device 10 is made by: (i) lining up theholes lifting device 10upper arms extensions holes lifting device 10lower arms extensions pins 39 through all the lined up holes to lock the attachment of theload carrying assembly 20 to thelifting device 10. The combinedload carrying assembly 20 and liftingdevice 40 is shown in various configurations inFIGS. 13, 15 and 16 . - The attachment of
load carrying assembly 30 to thelifting device 10 is made by: (i) lining up theholes lifting device 10upper arms extensions 35A and 35B on thecoupling member 28 respectively, (ii) lining up theholes lifting device 10lower arms extensions 35C and 35D respectively, and (iii) inserting boltedpins 39 through all the lined up holes to lock the attachment of theload carrying assembly 30 to thelifting device 10. The combinedload carrying assembly 30 and liftingdevice 50 is shown in various configurations inFIGS. 14, 17 and 18 . - Engaging the lifting mechanism to exert an upward pull on
shaft 26 while the load carrying assembly is attached to the lifting device creates an upward pull onvertical arms horizontal arms vertical arms horizontal arms horizontal arms horizontal arms FIGS. 15 and 17 . This allows the load carrying assembly to be transported to its destination where the lifting mechanism is engaged to lower the load carrying assembly and place it on the ground such as it is shown inFIGS. 16 and 18 . - The attachment of the
lifting device 10 to the load carrying assembly that is accomplished by inserting bolted pins through theupper arms lower arms extensions horizontal lift arms Vertical lift arms load carrying assembly 30 from the liftingdevice 10. Lift arm extension may be accomplished by electric actuation, hydraulic power or spring loading. Anextension member 32 is adapted to move forward or rearward to bring about lengthening or shortening an arm. - Generally, in the course of using the lifting device, only the
upper lift arms lower lift arms FIG. 8 shows an embodiment of an extendable and retractable arm.FIGS. 19, 20, 21 and 22 illustrate use configurations for thelifting device 10 utilizing acoupling member 28 and utilizing extendable and retractable upperhorizontal arms load carrying assembly 30 backward, upperhorizontal arms load carrying assembly 30 forward, thehorizontal arms load carrying assembly 30. It is noted that tilting theload carrying assembly 30 backward may also be achieved by extending thelower lift arms load carrying assembly 30, while tilting theload carrying assembly 30 forward may be achieved by retracting thelower lift arms load carrying assembly 30 improves the stability of theload carrying assembly 30 in transportation and in discharging the load. - The downward tilting of the
load carrying assembly 30 enables detaching theload carrying assembly 20 while leavingcoupling member 28 attached to arms 17 and 19 as shown inFIGS. 21 and 22 . This enables theload carrying assembly 30 containing thecoupling member 28 to couple with and uncouple from various load carrying assemblies with speed and efficiency. - Attachment of the
load carrying assembly 20 that does not contain a coupling member to thelifting device 10 is generally suitable for a more permanent attachment to thelifting device 10, while attaching theload carrying assembly 30 to thelifting device 10 using a coupling member is advantageous for frequent attachments to multiple platforms.FIGS. 4-6 portray various views of thecoupling member 28 attached to thelifting device 10. It is also noted that thelifting device 10 may containguard plates device support structure 14.
Claims (14)
1. A lifting device adapted for releasable connection to a powered vehicle equipped with a winch via a receiver tube on the vehicle, comprising a unitary integrated combination of:
(a) a support structure that includes a vertically extending stanchion with a pulley rotatably mounted proximate an apex of the stanchion,
(b) a horizontal set of pivot arms including at least,
(1) a first horizontal arm pivotally attached at a first end to the support structure at a first pivot point,
(2) a second horizontal arm pivotally attached at a first end to the support structure at a second pivot point wherein the first and second pivot points are disposed in substantially the same first horizontal plane, and
(3) a third horizontal arm pivotally attached at a first end to the support structure at a third pivot point wherein the third pivot point is horizontally disposed above the first horizontal plane,
(c) a lift member having (i) a first appendage pivotally attached to the first horizontal arm at a fourth pivot point spaced from the first pivot point, (ii) a second appendage pivotally attached to the second horizontal arm at a fifth pivot point spaced from the second pivot point, and (iii) an interconnect member vertically positioned below the pulley and above the third horizontal arm and interconnecting the first and second appendages; and
(d) a coupler tube mateable with the receiver tube,
(e) wherein the third horizontal arm is not attached to the lift member nor either of the first and second horizontal arms.
2. The lifting device of claim 1 wherein the interconnect member is operable for engagement by a distal end of a cable supported upon the pulley wherein (i) tensioned pulling of the cable away from the interconnect member is operable for effecting a lifting of the first and second vertical arms and an upward pivoting of the first and second horizontal arms about the first and second pivot points against the force of gravity respectively, and (ii) releasing a length of the tensioned cable effects a gravitational lowering of the first and second vertical arms and downward pivoting of the first and second horizontal arms about the first and second pivot points.
3. The lifting device of claim 1 wherein the first and second horizontal arms are horizontally extendable and retractable.
4. The lifting device of claim 1 wherein the third horizontal arm is horizontally extendable and retractable.
5. The lifting device of claim 1 wherein the first and second appendages are vertically extendable and retractable.
6. The lifting device of claim 4 further comprising a pair of powered actuators selected from a hydraulic cylinder, a pneumatic cylinder, and an electric linear actuator, each operable for selectively extending and retracting one of the first and second horizontal arms.
7. The lifting device of claim 5 further comprising a powered actuator selected from a hydraulic cylinder, a pneumatic cylinder, and an electric linear actuator, operable for selectively extending and retracting the third horizontal arm.
8. The lifting device of claim 1 further comprising a coupling member attached to a second end of each of the first, second and third horizontal arms.
9. The lifting device of claim 8 wherein the first, second and third horizontal arms are pivotally pinned to the coupling member at sixth, seventh and eighth pivot points respectively, wherein the sixth and seventh pivot points are disposed in substantially the same second horizontal plane and the eighth pivot point is horizontally disposed above the second horizontal plane.
10. The lifting device of claim 9 further comprising a load carrying assembly releasably attached to the coupling member, the load carrying assembly having a horizontal platform, a vertical support member attached to the horizontal platform and a containment member attached to the vertical support member, the coupling member being configured for tightly wedging in the containment member.
11. A lifting device adapted for releasable connection to a powered vehicle equipped with a winch via a receiver tube on the vehicle, comprising a unitary integrated combination of:
(a) a support structure that includes a stanchion projecting in a first transverse direction with a pulley rotatably mounted proximate an apex of the stanchion;
(b) a pair of laterally spaced lower arms each (i) pivotally attached at a first end to the support structure at first pivot points for pivoting about a first lateral axis, (ii) extending in a first longitudinal direction from the support structure, and (iii) disposed in substantially the same horizontal plane;
(c) an upper arm pivotally attached at a first end to the support structure at a second pivot point for pivoting about a second lateral axis wherein the second lateral axis is transversely spaced in the first transverse direction from the first lateral axis;
(d) a laterally extending yoke (i) conjoining the pair of lower arms, (ii) transversely positioned in a second transverse direction opposite the first transverse direction from the pully, and (iii) operable for effecting joint pivoting of the pair of lower arms about the first pivot points when the yoke is transversely displaced without concomitant pivoting of the at least one upper arm about the second pivot point; and
(e) a coupler tube adapted for coupling with the receiver tube and extending in a second longitudinal direction opposite the first longitudinal direction from the support structure.
12. The lifting device of claim 11 wherein the at least one arm is extendable and retractable.
13. The lifting device of claim 11 further comprising a load carrying assembly, the load carrying assembly including at least a vertical support and a platform, with the load carrying assembly attached to a second end of each of the pair of lower arms and a second end of the upper arm.
14. A lifting device adapted for releasable connection to a powered vehicle equipped with a winch via a trailer hitch receiver on the vehicle, comprising a unitary integrated combination of:
(a) a support structure that includes a stanchion projecting in a first transverse direction with a pulley rotatably mounted proximate an apex of the stanchion;
(b) a pair of laterally spaced lower arms each (i) pivotally attached at a first end to the support structure at first pivot points for pivoting about a first lateral axis, (ii) extending in a first longitudinal direction from the support structure, and (iii) disposed in substantially the same horizontal plane;
(c) a means for stabilizing a load carrying assembly when the load carrying assembly is pivotally attached to a second end of each of the pair of lower arms, the stabilizing means (i) pivotally attached at a first end to the support structure for pivoting about a second lateral axis wherein the second lateral axis is transversely spaced in the first transverse direction from the first lateral axis, and (ii) configured and arranged at a second end for pivotable attachment to the load carrying assembly;
(d) a laterally extending yoke (i) conjoining the pair of lower arms, (ii) transversely positioned in a second transverse direction opposite the first transverse direction from the pully, and (iii) operable for effecting joint pivoting of the pair of lower arms about the first pivot points when the yoke is transversely displaced; and
(e) a trailer hitch coupler tube extending in a second longitudinal direction opposite the first longitudinal direction from the support structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US17/169,789 US20210163274A1 (en) | 2018-10-15 | 2021-02-08 | Lifting device |
Applications Claiming Priority (2)
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US16/160,256 US10934147B2 (en) | 2018-10-15 | 2018-10-15 | Lifting device |
US17/169,789 US20210163274A1 (en) | 2018-10-15 | 2021-02-08 | Lifting device |
Related Parent Applications (1)
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US16/160,256 Continuation US10934147B2 (en) | 2018-10-15 | 2018-10-15 | Lifting device |
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US20210163274A1 true US20210163274A1 (en) | 2021-06-03 |
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US16/160,256 Active US10934147B2 (en) | 2018-10-15 | 2018-10-15 | Lifting device |
US17/169,789 Abandoned US20210163274A1 (en) | 2018-10-15 | 2021-02-08 | Lifting device |
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US16/160,256 Active US10934147B2 (en) | 2018-10-15 | 2018-10-15 | Lifting device |
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US10934147B2 (en) * | 2018-10-15 | 2021-03-02 | John E Gustafson | Lifting device |
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US2795178A (en) * | 1951-08-29 | 1957-06-11 | Deere & Co | Four point hitch device |
US20070098538A1 (en) * | 2005-11-01 | 2007-05-03 | Zettel Daniel M | Mount apparatus and method for attaching three-point hitch implements to front arms of a front-end loader |
US20120261899A1 (en) * | 2011-04-15 | 2012-10-18 | Ockunzzi Jay L | Three-point hitch converter |
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US20180332760A1 (en) * | 2017-05-19 | 2018-11-22 | Deere & Company | Method and agricultural utility machine for spreading crop |
US20200115207A1 (en) * | 2018-10-15 | 2020-04-16 | John E. Gustafson | Lifting Device |
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DE1124756B (en) * | 1959-03-17 | 1962-03-01 | Bayerische Pflugfabrik Gmbh | Linkage controlled by the power lift of the farm tractor for a displaceable device part on a vehicle or farm device connected to the tractor towing device |
US4232878A (en) * | 1978-06-14 | 1980-11-11 | Moore Jr George E | Apparatus for coupling a tractor and farm implement |
DE8215040U1 (en) * | 1982-05-24 | 1982-07-15 | Karl Kässbohrer Fahrzeugwerke GmbH, 7900 Ulm | Vehicle with an implement |
US20070108731A1 (en) * | 2005-10-19 | 2007-05-17 | Will Enterprises, Ltd. | Trailer tongue lifting and positioning system |
AU2013201057B2 (en) * | 2012-11-06 | 2014-11-20 | SINGH, Kalvin Jit MR | Improvements in and Relating to Load Transfer |
DE102014103411A1 (en) * | 2014-03-13 | 2015-09-17 | Claas Saulgau Gmbh | Working tool for an agricultural working machine |
DE102015103925A1 (en) * | 2015-03-17 | 2016-10-06 | Jan-Hendrik Wacker | Hydraulic top link, hydraulic three-point suspension and method for coupling a utility unit to a commercial vehicle |
EP3439450A4 (en) * | 2016-04-07 | 2019-12-25 | Mollick, Peter J. | System for connecting implement to mobile machinery |
DE102017201040A1 (en) * | 2017-01-23 | 2018-07-26 | Deere & Company | Method and device for identifying a hitch |
-
2018
- 2018-10-15 US US16/160,256 patent/US10934147B2/en active Active
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2021
- 2021-02-08 US US17/169,789 patent/US20210163274A1/en not_active Abandoned
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US2795178A (en) * | 1951-08-29 | 1957-06-11 | Deere & Co | Four point hitch device |
US20070098538A1 (en) * | 2005-11-01 | 2007-05-03 | Zettel Daniel M | Mount apparatus and method for attaching three-point hitch implements to front arms of a front-end loader |
US20120261899A1 (en) * | 2011-04-15 | 2012-10-18 | Ockunzzi Jay L | Three-point hitch converter |
US20180135272A1 (en) * | 2016-11-11 | 2018-05-17 | Caterpillar Inc. | Bracket assembly for linkage assemblies of machines |
US20180332760A1 (en) * | 2017-05-19 | 2018-11-22 | Deere & Company | Method and agricultural utility machine for spreading crop |
US20200115207A1 (en) * | 2018-10-15 | 2020-04-16 | John E. Gustafson | Lifting Device |
US10934147B2 (en) * | 2018-10-15 | 2021-03-02 | John E Gustafson | Lifting device |
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US20200115207A1 (en) | 2020-04-16 |
US10934147B2 (en) | 2021-03-02 |
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