CA1284797C - Portable, vehicle lifting device - Google Patents
Portable, vehicle lifting deviceInfo
- Publication number
- CA1284797C CA1284797C CA 578972 CA578972A CA1284797C CA 1284797 C CA1284797 C CA 1284797C CA 578972 CA578972 CA 578972 CA 578972 A CA578972 A CA 578972A CA 1284797 C CA1284797 C CA 1284797C
- Authority
- CA
- Canada
- Prior art keywords
- vehicle
- base frame
- cradle
- lifting
- lifting device
- 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.)
- Expired
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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/22—Lifting frames, e.g. for lifting vehicles; Platform lifts with tiltable platforms
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A portable, hydraulically operated lifting device is disclosed. The apparatus is primarily used for lifting cars over on their side at approximately 90°. The apparatus includes a base frame with lifting arms hinged thereto and which are raised or lowered with respect to the base by way of a scissor arm arrangement which interconnects the lifting arms with a hydraulic ram or other suitable actuating apparatus.
A portable, hydraulically operated lifting device is disclosed. The apparatus is primarily used for lifting cars over on their side at approximately 90°. The apparatus includes a base frame with lifting arms hinged thereto and which are raised or lowered with respect to the base by way of a scissor arm arrangement which interconnects the lifting arms with a hydraulic ram or other suitable actuating apparatus.
Description
7~37 PORTABLE, VEHICLE ~IFTING DEVICE
Field of the Invention This invention relates to li~ting or ~acking devices and particular to such a device for use in raising and lowering automotive vehicles.
Backqround of the Invention This lifting or jacking apparatus is primarily for use in co~bination with the cradle devices shown in my lo earlier United States Patent 4,744,717 of May 17th, 1988.
That patent disclosed improved cradles for allowing a vehicle to be rolled over on its side and for supporting the vehicle in that raised position. The cradle devices included mounting means incorporating a support bracket, for detachable securement to the wheels of a vehicle on one side thereof.
The subject matter of this application is primarily for raising or lowering a vehicle to which the cradle means have already been mounted in accordance with my above mentioned U.S. patent and, in one mode o~
operation, it can be interconnected with the cradle means.
Summary of the Invention According to a broad a9p2ct, the inv9ntion r~lataa to a portable lifting or jacking device for use in raising automotive vehicles over on their sides. The device comprises an elongated base frame, a vehicle lifting arm pivotally secured at one of its ends to the base frame, means interconnecting the base frame with the ~28a~7~37 lifting arm intermediate the ends thereoP, and actua*ing means located on the base frame and being connected to - the interconnecting means The actuating means, while operated, serves to raise ox lower the lifking arm through the interconnectiny means.
~ ccording to a broad aspect the invention relates to a combination, with cradle means for rotating a vehiale on its side wherein said cradle means includes curved members providing a rolling support for said vehicle with wheel attachment means for securing said cradle and supports to wheels on one side of a vehicle, a portable lifting device for use in rotating a vehicle over onto said cradle supports to orient said vehicle on its side, said lifting device comprising an elongated base frame having a proximal end and a distal end adapted for positioning under said vehicle; means pivotally connected to said distal end of said base frame for detacha~ly connecting said lifting device with said cradle means secured to said vehicle wheels; an elongated vehicle lifting arm pivotally mounted at one of its ends to the distal end of said base frame; actuating means on said base frame; link arms pivotally interconnecting said lifting arms with said base frame;
and said actuating means being connected to said link means whereby operation of said actuating means effects upward or downward movement of said lifting arm about its pivotal mounting to the distal end of said base ~rame to thereby turn a vehicle onto its side on said cradle means or lower said vehicle down onto its wheels.
Brief DescriPtion of the Drawinqs The invention is illustrated by way of example in the accompanying drawings in which:
FIGURE l is a side view of the present invention and B
847~37 showing the lifting arm in a raised position in phantom line;
FIGURE 2 is a plan view of the device in Figure 1;
FIGURE 3 is a plan view of the lifting arm;
FIGURES 4 and 5 are side and plan views respectively of the base frame of the invention;
FIGURE 6 is an elevation view o~ the bracket pivot means;
FIGURE 7 is an elevation view of the car cradle pivot arm assembly; and FIGURES 8 and 9 are plan and side views respectively of the lower scissor arm assembly.
Detailed Description_of the Preferred Embodiment Referring to Figures 1 and 2, the apparatus according to the invention includes a base frame indicated generally at 10; a lifting arm assembly 12 pivotally connected at one of its ends to the base frame 10; two pairs of scissor arms 14, 16, interconnecting the lifting arm assembly 12 with the base frame 10; and actuating means such as a hydraulic cylinder 18 which is pivotally secured at its cylinder end 20 to the base frame and at its piston rod end 22 to the scissor arms, ~or raising or lowering the lifting arm assembly 12. It will be appreciated that, while the illustrated embodiment incorporates a hydraulic cylinder, the aatuating means could also comprise an electric motor, mechanical means or the like.
Referring to Figures 4 and 5 as well as Figures 1 and 2, tha base frame 10 consists of a pair of elongated, parallel, square tubing rails 24, 26 one end of which is provided with a pair of square tube sockets 28 for supporting a smaller frame structure 30 (Figure 1) which incorporates the hydraulic motor and pump control 32 for B`
.
~847~7 operating the hydraulic cylinder 18. The other end o~
the base frame 10 is provided with bracke~ means 34 ~or pivotally securing a car cradle pivot bar holder 36 (Figures 1 and 2~ to the frame 10 by means of arms 38 and 40 of the pivot bar 36.
The rails 24 and 26 of base frame 10 also incorporate a pair o~ lower scissor arm pivot brackets ~2 and a hydraulic cylinder clevis bracket 44 secured to a cross bar 46 as illustrated.
Referring to Figure 3 as well as Figures 1 and 2, the lifting arm 12 consists of a pair of spaced, parallel, squared tubing rails 48, 50 having a vehicle engaging lip or ~lange 52 at one end thereofy the other end being adapted for pivotal connection to the base frame lO at the brackets 34 thereon (Figure 4).
Rails 48 and 50 include upper scissor arm pivot brackets 54.
Preferably, the scissor arm brackets, as shown in Figure 6, comprise a frusto-conical structure the rim 56 thereof being weldable to the side rail o~ the li~ting arm 12 or the base frame lO depending on whether it is an upper or lower bracket. The inside o~ the frusto-conical structure has a captive nut 58 welded therein which ia adapted to threadably receive a pivot bolt 60 as shown in Figure 2. A similar arrangement applies to the lower brackets 42 as shown in Figure 5.
As shown in Figures 1 and 2, the piston rod end 22 of the hydraulic cylinder 18 is adapted to open or close the cooperating pairs of scissor arms 14 and 16, the upper pair being pivotally secured to the brackets 54 of the lifting arm 12 and the lower ones 16 being pivotally secured to the ~rame 10. The lower scissor arm assembly is shown in detail in Figures 8 and 9 although the drawing shows the assembly in reverse to that shown in ~D
~84797 the plan view of Figure 2. Be that as it may, the ass2mbly consists of the lower arms 16 spaced in parallel relationship by a central cross member 62 to which a central bracket 64 is secured, bracket 64 including a pivot eye 66 for receiving the piston rod end 22 of the hydraulia actuator 18.
This apparatus i6 primarily de~igned to work with a car cradle arranyement Or th0 type ~l~own ln ~y l~u~
U.S. Patent 4,744,717 entltled "VEHICLE LIFTING DEVICE"
of May 17, 19R8. Reference to that patent describes how the cradle arrangements disclosed therein mount onto vehicle wheels on one side thereof so that the vehicle can be turned over on its side.
In accordance with the Fig. lO embodiment of U.S.
Patent 4,774,717, a pair of cradle members have wheel attachmeent plates that are secured, for example, to the left front and left rear wheels of a vehicle. The cradle members have curved portions, which, when the cradle members are rotated, serve to roll the vehicle off the ground and onto its side.
Rather than manùally rotating the cradle members (which takes substantial effort) to turn the vehicle on its side, the lifting device of the present invention can be used.
According to the invention, the lifting dèvice is rolled under the vehicle from the side opposite the attached cradle members and midway therebetween.
cradle pivot bar 37 (Fig. 2) is slidably positioned in the cradle pivot bar holder 36 and the ends of bar 37 connect with the front and rear cradle members, the lifting device now being in the inoperative position shown in full line in Figs. 1 and 2. The device lO is then ready to engage ths undersid~ of the vehicle.
The operator end (to the right in Figure 1) is provided with a stabilizer bar 31 which is removably Bi ~8~797 attachPd to the frame 30.
The hydraulic pump means 32 is connected to a power ! source and, when actuated, the hydraulic cylinder 18 ~as shown in phantom line in Figure 1) will effect the opening of the scissor arms 14 and 16 to raise the lifting arm 12 which eventually engages the underside of the automobile by means of the lip 52 and the automobile is rotated over onto the crad~es where it is held in the uprigh~ position. ~he car cradle brake bars or stabilizer bars as describad in Patent 4,744,717 can then bo installed in the cradles to maintain the automobile in its raised position and the lifting arm 12 can then be disengaged from the vehicle lowered and, when.the arm is in its down position, bar 37 can be removed from the car cradles and the lifting device moved away from the vehicle.
As shown in Figures 1 and 2, ~ixed casters 70, 72 are attached to the side rails of the lifting arm 12 so that when the arm 12 is in the down position, the lifting device is in a mobile position. The other end of the lifting device has a swivel caster 68 which can be raised or lowered by hand to put the caster in a mobile position.
While the invention has been described in connection with a specific embodiment thereof and in a specific use, various modifications thereof will occur to those skilled in the art without departing from the spirit and scope of the invention as set forth in the appended claims~
The terms and expressions which havP been employed in this specification are used as terms of description and not o~ limitations, and there is no intention in the use o~ such term~ and expression~ to axclude ~ny equivalents of the features shown and described or portions thereof, but it is recognized that various modification~ are possible within the scope of the invention claims.
. .
.
Field of the Invention This invention relates to li~ting or ~acking devices and particular to such a device for use in raising and lowering automotive vehicles.
Backqround of the Invention This lifting or jacking apparatus is primarily for use in co~bination with the cradle devices shown in my lo earlier United States Patent 4,744,717 of May 17th, 1988.
That patent disclosed improved cradles for allowing a vehicle to be rolled over on its side and for supporting the vehicle in that raised position. The cradle devices included mounting means incorporating a support bracket, for detachable securement to the wheels of a vehicle on one side thereof.
The subject matter of this application is primarily for raising or lowering a vehicle to which the cradle means have already been mounted in accordance with my above mentioned U.S. patent and, in one mode o~
operation, it can be interconnected with the cradle means.
Summary of the Invention According to a broad a9p2ct, the inv9ntion r~lataa to a portable lifting or jacking device for use in raising automotive vehicles over on their sides. The device comprises an elongated base frame, a vehicle lifting arm pivotally secured at one of its ends to the base frame, means interconnecting the base frame with the ~28a~7~37 lifting arm intermediate the ends thereoP, and actua*ing means located on the base frame and being connected to - the interconnecting means The actuating means, while operated, serves to raise ox lower the lifking arm through the interconnectiny means.
~ ccording to a broad aspect the invention relates to a combination, with cradle means for rotating a vehiale on its side wherein said cradle means includes curved members providing a rolling support for said vehicle with wheel attachment means for securing said cradle and supports to wheels on one side of a vehicle, a portable lifting device for use in rotating a vehicle over onto said cradle supports to orient said vehicle on its side, said lifting device comprising an elongated base frame having a proximal end and a distal end adapted for positioning under said vehicle; means pivotally connected to said distal end of said base frame for detacha~ly connecting said lifting device with said cradle means secured to said vehicle wheels; an elongated vehicle lifting arm pivotally mounted at one of its ends to the distal end of said base frame; actuating means on said base frame; link arms pivotally interconnecting said lifting arms with said base frame;
and said actuating means being connected to said link means whereby operation of said actuating means effects upward or downward movement of said lifting arm about its pivotal mounting to the distal end of said base ~rame to thereby turn a vehicle onto its side on said cradle means or lower said vehicle down onto its wheels.
Brief DescriPtion of the Drawinqs The invention is illustrated by way of example in the accompanying drawings in which:
FIGURE l is a side view of the present invention and B
847~37 showing the lifting arm in a raised position in phantom line;
FIGURE 2 is a plan view of the device in Figure 1;
FIGURE 3 is a plan view of the lifting arm;
FIGURES 4 and 5 are side and plan views respectively of the base frame of the invention;
FIGURE 6 is an elevation view o~ the bracket pivot means;
FIGURE 7 is an elevation view of the car cradle pivot arm assembly; and FIGURES 8 and 9 are plan and side views respectively of the lower scissor arm assembly.
Detailed Description_of the Preferred Embodiment Referring to Figures 1 and 2, the apparatus according to the invention includes a base frame indicated generally at 10; a lifting arm assembly 12 pivotally connected at one of its ends to the base frame 10; two pairs of scissor arms 14, 16, interconnecting the lifting arm assembly 12 with the base frame 10; and actuating means such as a hydraulic cylinder 18 which is pivotally secured at its cylinder end 20 to the base frame and at its piston rod end 22 to the scissor arms, ~or raising or lowering the lifting arm assembly 12. It will be appreciated that, while the illustrated embodiment incorporates a hydraulic cylinder, the aatuating means could also comprise an electric motor, mechanical means or the like.
Referring to Figures 4 and 5 as well as Figures 1 and 2, tha base frame 10 consists of a pair of elongated, parallel, square tubing rails 24, 26 one end of which is provided with a pair of square tube sockets 28 for supporting a smaller frame structure 30 (Figure 1) which incorporates the hydraulic motor and pump control 32 for B`
.
~847~7 operating the hydraulic cylinder 18. The other end o~
the base frame 10 is provided with bracke~ means 34 ~or pivotally securing a car cradle pivot bar holder 36 (Figures 1 and 2~ to the frame 10 by means of arms 38 and 40 of the pivot bar 36.
The rails 24 and 26 of base frame 10 also incorporate a pair o~ lower scissor arm pivot brackets ~2 and a hydraulic cylinder clevis bracket 44 secured to a cross bar 46 as illustrated.
Referring to Figure 3 as well as Figures 1 and 2, the lifting arm 12 consists of a pair of spaced, parallel, squared tubing rails 48, 50 having a vehicle engaging lip or ~lange 52 at one end thereofy the other end being adapted for pivotal connection to the base frame lO at the brackets 34 thereon (Figure 4).
Rails 48 and 50 include upper scissor arm pivot brackets 54.
Preferably, the scissor arm brackets, as shown in Figure 6, comprise a frusto-conical structure the rim 56 thereof being weldable to the side rail o~ the li~ting arm 12 or the base frame lO depending on whether it is an upper or lower bracket. The inside o~ the frusto-conical structure has a captive nut 58 welded therein which ia adapted to threadably receive a pivot bolt 60 as shown in Figure 2. A similar arrangement applies to the lower brackets 42 as shown in Figure 5.
As shown in Figures 1 and 2, the piston rod end 22 of the hydraulic cylinder 18 is adapted to open or close the cooperating pairs of scissor arms 14 and 16, the upper pair being pivotally secured to the brackets 54 of the lifting arm 12 and the lower ones 16 being pivotally secured to the ~rame 10. The lower scissor arm assembly is shown in detail in Figures 8 and 9 although the drawing shows the assembly in reverse to that shown in ~D
~84797 the plan view of Figure 2. Be that as it may, the ass2mbly consists of the lower arms 16 spaced in parallel relationship by a central cross member 62 to which a central bracket 64 is secured, bracket 64 including a pivot eye 66 for receiving the piston rod end 22 of the hydraulia actuator 18.
This apparatus i6 primarily de~igned to work with a car cradle arranyement Or th0 type ~l~own ln ~y l~u~
U.S. Patent 4,744,717 entltled "VEHICLE LIFTING DEVICE"
of May 17, 19R8. Reference to that patent describes how the cradle arrangements disclosed therein mount onto vehicle wheels on one side thereof so that the vehicle can be turned over on its side.
In accordance with the Fig. lO embodiment of U.S.
Patent 4,774,717, a pair of cradle members have wheel attachmeent plates that are secured, for example, to the left front and left rear wheels of a vehicle. The cradle members have curved portions, which, when the cradle members are rotated, serve to roll the vehicle off the ground and onto its side.
Rather than manùally rotating the cradle members (which takes substantial effort) to turn the vehicle on its side, the lifting device of the present invention can be used.
According to the invention, the lifting dèvice is rolled under the vehicle from the side opposite the attached cradle members and midway therebetween.
cradle pivot bar 37 (Fig. 2) is slidably positioned in the cradle pivot bar holder 36 and the ends of bar 37 connect with the front and rear cradle members, the lifting device now being in the inoperative position shown in full line in Figs. 1 and 2. The device lO is then ready to engage ths undersid~ of the vehicle.
The operator end (to the right in Figure 1) is provided with a stabilizer bar 31 which is removably Bi ~8~797 attachPd to the frame 30.
The hydraulic pump means 32 is connected to a power ! source and, when actuated, the hydraulic cylinder 18 ~as shown in phantom line in Figure 1) will effect the opening of the scissor arms 14 and 16 to raise the lifting arm 12 which eventually engages the underside of the automobile by means of the lip 52 and the automobile is rotated over onto the crad~es where it is held in the uprigh~ position. ~he car cradle brake bars or stabilizer bars as describad in Patent 4,744,717 can then bo installed in the cradles to maintain the automobile in its raised position and the lifting arm 12 can then be disengaged from the vehicle lowered and, when.the arm is in its down position, bar 37 can be removed from the car cradles and the lifting device moved away from the vehicle.
As shown in Figures 1 and 2, ~ixed casters 70, 72 are attached to the side rails of the lifting arm 12 so that when the arm 12 is in the down position, the lifting device is in a mobile position. The other end of the lifting device has a swivel caster 68 which can be raised or lowered by hand to put the caster in a mobile position.
While the invention has been described in connection with a specific embodiment thereof and in a specific use, various modifications thereof will occur to those skilled in the art without departing from the spirit and scope of the invention as set forth in the appended claims~
The terms and expressions which havP been employed in this specification are used as terms of description and not o~ limitations, and there is no intention in the use o~ such term~ and expression~ to axclude ~ny equivalents of the features shown and described or portions thereof, but it is recognized that various modification~ are possible within the scope of the invention claims.
. .
.
Claims (3)
1. In combination with cradle means for rotating a vehicle on its side wherein said cradle means includes curved members providing a rolling support for said vehicle with wheel attachment means for securing said cradle and supports to wheels on one side of a vehicle, a portable lifting device for use in rotating a vehicle over onto said cradle supports to orient said vehicle on its side, said lifting device comprising:
a) an elongated base frame having a proximal end and a distal end adapted for positioning under said vehicle;
b) means pivotally connected to said distal end of said base frame for detachably connecting said lifting device with said cradle means secured to said vehicle wheels;
c) an elongated vehicle lifting arm pivotally mounted at one of its ends to the distal end of said base frame;
d) actuating means on said base frame;
e) link arms pivotally interconnecting said lifting arms with said base frame; and f) said actuating means being connected to said link means whereby operation of said actuating means effects upward or downward movement of said lifting arm about its pivotal mounting to the distal end of said base frame to thereby turn a vehicle onto its side on said cradle means or lower said vehicle down onto its wheels.
a) an elongated base frame having a proximal end and a distal end adapted for positioning under said vehicle;
b) means pivotally connected to said distal end of said base frame for detachably connecting said lifting device with said cradle means secured to said vehicle wheels;
c) an elongated vehicle lifting arm pivotally mounted at one of its ends to the distal end of said base frame;
d) actuating means on said base frame;
e) link arms pivotally interconnecting said lifting arms with said base frame; and f) said actuating means being connected to said link means whereby operation of said actuating means effects upward or downward movement of said lifting arm about its pivotal mounting to the distal end of said base frame to thereby turn a vehicle onto its side on said cradle means or lower said vehicle down onto its wheels.
2. A lifting device according to claim 1 wherein said base frame comprises a pair of spaced parallel side rails and crossmembers connected thereto; said means for connecting said device with said cradle means comprising a pair of parallel arms pivotally connected at one of their ends to the distal ends of said base frame side rails, a tubular bar holder normal to and secured to the other ends of said parallel arms and a cradle pivot bar slidably positioned in said bar holder with the ends of said pivot bar being adapted to connect to said cradle means.
3. A lifting device according to claim 1 wherein said lifting arm comprises a pair of spaced parallel rails overlying said base frame the distal ends of said lifting arm rails being pivotally mounted to the distal ends of said frame rails, said actuating means comprising an hydraulic cylinder pivotally connected at its cylinder end to said base frame adjacent the proximal end thereof and at its piston end to said link arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 578972 CA1284797C (en) | 1988-09-30 | 1988-09-30 | Portable, vehicle lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 578972 CA1284797C (en) | 1988-09-30 | 1988-09-30 | Portable, vehicle lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1284797C true CA1284797C (en) | 1991-06-11 |
Family
ID=4138823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 578972 Expired CA1284797C (en) | 1988-09-30 | 1988-09-30 | Portable, vehicle lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1284797C (en) |
-
1988
- 1988-09-30 CA CA 578972 patent/CA1284797C/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |