CA2199798A1 - Improved hydraulic lift system - Google Patents
Improved hydraulic lift systemInfo
- Publication number
- CA2199798A1 CA2199798A1 CA002199798A CA2199798A CA2199798A1 CA 2199798 A1 CA2199798 A1 CA 2199798A1 CA 002199798 A CA002199798 A CA 002199798A CA 2199798 A CA2199798 A CA 2199798A CA 2199798 A1 CA2199798 A1 CA 2199798A1
- Authority
- CA
- Canada
- Prior art keywords
- hydraulic
- lift system
- recited
- fluidly connecting
- improved
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/10—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure
- B60S9/12—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure of telescopic type
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
An improved hydraulic lift system for a motor vehicle comprising a plurality of hydraulic struts pivotally mounted to an undercarriage of the motor vehicle. An apparatus is for supplying hydraulic pressure through the system. A device is for hydraulically rotating each hydraulic strut from an up position to a down position. An assemblage is for hydraulically telescoping each hydraulic strut from a retracted position to an extended position, so as to lift the motor vehicle off of a flat support surface.
Description
0~19-q ~ 9~
IMPROVED HYDRAULIC LIFT SYSTEM
BACKGROUND OF THE lNv~N~l~lON
Field of the Invention The instant invention relates generally to jacks and more specifically it relates to an improved hydraulic lift system.
02~9~7Q8 Description of the Prior Art Numerous jacks have been provided in prior art.
For example, U.S. patents numbered 3,186,686 to Mayer;
4,174,094 to Valdespino et al.; 4,445,588 to Truninger and 4,993,688 to Mueller et al. all are illustrative of such prior art. While these units may be suitable for the particular purpose to which they address, they would not be as suitable for the purposes of the present invention as heretofore described.
- 02~99798 MAYER, PETER
HYDRAULIC JACKING SYSTEM
U.S. Patent Number 3,186, 686 A hydraulic jacking system for vehicles including a plurality of hydraulic jacks secured to the chassis of the vehicle. Each of the jacks has a ram extendable vertically downwardly from a housed position to any selected degree of extension. A similar plurality of control valves are provided. Each of the valves serve one of the jacks exclusively. Hydraulic lines interconnect each valve with its particular jack. A hydraulic fluid tank and hydraulic pump supply pressure fluid to the control valves. Each of the control valves comprise an upper valve assembly and a lower valve assembly operable,'simultaneously. A lever means is to operate each control valve.~ A pressure fluid supply means and a fluid return means are also provided. The lever ~ 2 ~ 9 9 79 8 means places the upper valve assembly in communication with the pressure fluid supply means and places the lower valve assembly in c~ nication with the fluid return means in a first position. A second position of the lever means places the upper valve assembly in communication with the fluid return means and the lower valve assembly in com,mlln; cation with the pressure fluid supply means. In a neutral position of the lever the upper and lower valve assemblies are blanked off and fluid therewithin is trapped to provide a hydraulic lock. The pressure fluid supply means and fluid return means includes a distributor valve body. A wall divides the body into a pressure chamber and a return chamber. The pressure chamber is supplied with fluid through the pipe means from the pump and the return chamber is connected to the tank.
The upper and lower valve assemblies extend across the body and passes through the wall in fluid-tight relation. Each of the valve assemblies include an outer sleeve and a piston valve slidable therein. The outer sleeve has a first orifice therethrough located within the pressure chamber and a second orifice therethrough located,~within the return chamber. The piston valve has a hole therethrough selectively alignable with the first or second orifice and is movable to a third ~ 2 ~ 9 9 7 9 8 position, wherein the hole is completely covered by the sleeve. Hydraulic pipes connect each of the upper valve assemblies with one side of its respective jack and connects each of the lower assem~lies with the opposite side of the jack.
9~9798 VALDESPINO, JOSEPH M.
BRANDI, RONALD A.
RECREATIONAL VEHICLE LEVELING AND SUPPORT ~YS'l'~
U.S. Patent Number 4,174,094 A leveling and support system for recreational vehicles operates on a plurality of telescoping air cylinders. Leveling is accomplished through a separate valve in the line for each cylinder. Each valve is mounted adjacent the others, and adjacent an electrical switch which operates a DC motor in either a forward or a reverse direction. The motor actuates a rotary air compressor in a forward or reverse direction for changing the air pressure from positive to negative, while operating each of the valves to each cylinder line.
9 7 ~ 8 TRUNINGER, THOMAS
GUIDABLE BOGIE TRUCK FOR MOBILE CRANES
U.S. Patent Number 4,445,588 A guidable bogie truck for a mobile crane, such as a mobile gantry cane, includes a frame having longitudinal supports. A pair of wheel mechanisms connected to one end of the frame and a pair of wheel mechanism connected to the opposite end of the frame. One of the pairs of wheel mechanisms is connected to pivotable axles, which allows the associated pair of wheel mechanism to constitute guide wheel mechanisms. Four support legs are movably connected to the frames. ~ifting devices are connected to each of the four support legs to extend them downwardly to contact the ground and support the frame or to retract them upwardly towards the frame. Wheel drive motors ar'e for turning the wheel ~ 2 ~ ~ 9 79 8 mechanisms. Adjustment motors are for pivoting the pivotable wheel axles. A common control device is for controlling the operation of the bogie truck parts. A control panel on the bogie truck includes a shift lever and direction-setting parts which are connected to the common control device, to allow the operator to suitably determine the operation of the common control device and thus the bogie truck.
An automobile pneumatic jack system that can be easily attached to all currently manufactured automobile chassis and frames. There is a front suspension pneumatic jack that is mounted centrally to the front suspension of an automobile between its front wheels. There is also a rear suspension pneumatic jack that is mounted centrally to the rear suspension of the automobile between its rear wheels.
The system operates from a compressed air reservoir tank that has connections for the front and rear car jack outlets.
Additional outlets can be added to the compressed air reservoir tank, for connecting a pneumatic lug wrench and another for a tire inflating hose. A further option to the system could include a connection to the master brake cylinder such that when the car is locked, the compressed air is applied to the braking system, to lock the brakes hard on for an anti-theft feature.
SUMMARY OF THE lNv~N~ ON
A primary object of the present invention is to provide an improved hydraulic lift system that will overcome the shortcomings of the prior art devices.
Another object is to provide an improved hydraulic lift system that utilizes four hydraulic struts, in which the first pair would be mounted to the front under the carriage of a motor vehicle behind the front wheels, while the second pair would be mounted to the rear under carriage of the motor vehicle forward o~ the rear wheels.
An additional-object is to provide an improved hydraulic lift system that can be operated by the driver from inside the motor vehicle, when the engine is turned on and the tr~n~;ssion is in park or neutral position.
A still additional object is to provide an improved hydraulic lift system, in which an emergency hand pump, located under the hood, will operate the hydraulic struts when the engine fails to start.
A further object is to provide an improved hydraulic lift system that is simple and easy to use.
A still further object is to provide an improved hydraulic lift system that is economical in cost to manufacture.
Further objects of the invention will appear as the description proceeds.
To the accomplishment of the above and related objects, this invention may be embodied in the form illustrated in the accompanying drawings, attention being called to the fact, however, that the drawings are illustrative only, and that changes may be made in the specific construction illustrated and described within the scope of the appended claims.
BRIEF DESCRIPTION OF THE DR~WING FIGURES
Various other objects, features and attendant advantages of the present invention will become more fully appreciated as the same becomes better understood when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein;
FIGURE l a side perspective view of a motor vehicle with the instant invention installed and in use.
FIGURE lA is a front perspective view taken in the direction of arrow lA in Figur,e l, with the hood open, parts of the motor vehicle broken away and the hydraulic struts retracted.
~119~8 FIGURE 2 is a bottom perspective view taken in the direction of arrow 2 in Figure l, with parts of the motor vehicle broken away and the hydraulic struts retracted.
FIGURE 2A is a diagrammatic side view, showing the various components for operating the front right hydraulic strut.
FIGURE 2B is a perspective view with parts broken away and in section of some of the various components in Figure 2A, for operating the front right hydraulic strut.
FIGURE 3 is a diagrammatic bottom view as indicated by arrow 3 in Figure 2.
FIGURE 4 is an enlarged side view taken in the direction of arrow 4 in Figure 3, with parts broken away in phantom and in a dotted moved position, showing the front left hydraulic strut in greater detail.
q ~ 7 ~ 8 FIGURE 5 is a front view taken in the direction of arrow 5 in Figure l.
Similar reference characters denote corresponding features consistently throughout the attached drawings.
7 ~ 8 -15- : ~
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Turning now descriptively to the drawings, in which similar reference characters denote similar elements throughout the several views, Figures 1 through 5 illustrate an improved hydraulic lift system 10 for a motor vehicle 12, comprising a plurality of hydraulic struts 14 pivotally mounted to an undercarriage 16 of the motor vehicle 12. An apparatus 18 is for supplying hydraulic pressure through the system 10. A device 20 is for hydraulically rotating each hydraulic strut 14 from an up position to a down position.
An assemblage 22 is for hydraulically telescoping each hydraulic strut 14 from a retracted position to an extended position, so as to lift the motor vehicle 12 off of a flat support surface 24. ,, ~ a ~ 8 Each hydraulic strut 14 includes an outer cylinder 26. A piston rod 28 slides ~ithin the outer cylinder 26. A
foot pad 30 is pivotally mounted at 32 to a lower end of the piston rod 28. The foot pad 30 will engage with the flat support surface 24 when in the down position.
The hydraulic pressure supplying apparatus 18 consists of a hydraulic pump 34. A facility 36 is for mechanically operating the hydraulic pump 34 from an engine 38 of the motor vehicle 12. The mechanically operating facility 36 is a belt and pulley assembly 40 extending between the hydraulic pump 34 and the engine 38 of the motor vehicle 12.
The hydraulic pressure supplying apparatus 18 further includes a split valve 42. A unit 44 is for fluidly connecting the split valve 42 to the hydraulic pump 34. The first fluidly connecting uni~ 44 includes first and second hydraulic hose lines 46, 48 extending between the hydraulic pump 34 and the split valve 42.
~ 2 ~
Each hydraulic rotating device 20 consists of a rotary actuator 50 rotatively connected to a top end 52 of the outer cylinder 26. A reversing valve 54 is electrically connected to and operated by a remote switch (not shown). A
unit 56 is for fluidly connecting the reversing valve 54 to the rotary actuator 50. Another unit 58 is for fluidly connecting the reversing valve 54 to the split valve 42.
The second fluidly connecting unit 56 includes a third hydraulic hose line 60, extending between one side of the reversing valve 54 and the rotary actuator 50. A fourth hydraulic hose line 62 extends between an opposite side of the reversing valve 54 and the rotary actuator 50. The third fluidly connecting unit 58 is a fifth hydraulic hose line 64, extending between the split valve 42 and the reversing valve 54.
7 ~ ~
The hydraulic telescoping assemblage 22 comprises a unit 66 for fluidly connecting the split valve 42 to upper and lower portions of the outer cylinder 26 of the hydraulic strut 14. A control lever 68 is provided. A unit 70 is for fluidly connecting the control lever 68 to the split valve 42.
The fourth fluidly connecting unit 66 includes a sixth and seventh hydraulic hose lines 72, 74, extending concentrically between the split valve 42 and the upper and lower portions of the outer cylinder 26 of the hydraulic strut 14. The fifth fluidly connecting unit 70 is an eighth hydraulic hose line 76, extending between the split valve 42 and the control lever 68.
A transmission park/neutral interlock 78, as shown in Figure 2A, is coupled to the eight hydraulic hose line 76, so as to make it impossible to operate the control lever 68 and prevent accidental applia'ation while the motor vehicle 12 is in motion.
~2~9~7~8 An emergency hand pump 80, as shown in Figure lA
and 2A, can be fluidly connected into the first and second hydraulic hose lines 44 and 46 between the hydraulic pump 34 and the split valve 42. The emergency hand pump 80 will operate the hydraulic struts 14 when the engine 38 fails to start.
7 ~ ~
OPE~ATION OF THE lNV~;N~l~lON
To use the improved hydraulic lift system 10 to raise the motor vehicle 12, the following steps should be taken:
1. Engage the transmission park/neutral interlock 78.
IMPROVED HYDRAULIC LIFT SYSTEM
BACKGROUND OF THE lNv~N~l~lON
Field of the Invention The instant invention relates generally to jacks and more specifically it relates to an improved hydraulic lift system.
02~9~7Q8 Description of the Prior Art Numerous jacks have been provided in prior art.
For example, U.S. patents numbered 3,186,686 to Mayer;
4,174,094 to Valdespino et al.; 4,445,588 to Truninger and 4,993,688 to Mueller et al. all are illustrative of such prior art. While these units may be suitable for the particular purpose to which they address, they would not be as suitable for the purposes of the present invention as heretofore described.
- 02~99798 MAYER, PETER
HYDRAULIC JACKING SYSTEM
U.S. Patent Number 3,186, 686 A hydraulic jacking system for vehicles including a plurality of hydraulic jacks secured to the chassis of the vehicle. Each of the jacks has a ram extendable vertically downwardly from a housed position to any selected degree of extension. A similar plurality of control valves are provided. Each of the valves serve one of the jacks exclusively. Hydraulic lines interconnect each valve with its particular jack. A hydraulic fluid tank and hydraulic pump supply pressure fluid to the control valves. Each of the control valves comprise an upper valve assembly and a lower valve assembly operable,'simultaneously. A lever means is to operate each control valve.~ A pressure fluid supply means and a fluid return means are also provided. The lever ~ 2 ~ 9 9 79 8 means places the upper valve assembly in communication with the pressure fluid supply means and places the lower valve assembly in c~ nication with the fluid return means in a first position. A second position of the lever means places the upper valve assembly in communication with the fluid return means and the lower valve assembly in com,mlln; cation with the pressure fluid supply means. In a neutral position of the lever the upper and lower valve assemblies are blanked off and fluid therewithin is trapped to provide a hydraulic lock. The pressure fluid supply means and fluid return means includes a distributor valve body. A wall divides the body into a pressure chamber and a return chamber. The pressure chamber is supplied with fluid through the pipe means from the pump and the return chamber is connected to the tank.
The upper and lower valve assemblies extend across the body and passes through the wall in fluid-tight relation. Each of the valve assemblies include an outer sleeve and a piston valve slidable therein. The outer sleeve has a first orifice therethrough located within the pressure chamber and a second orifice therethrough located,~within the return chamber. The piston valve has a hole therethrough selectively alignable with the first or second orifice and is movable to a third ~ 2 ~ 9 9 7 9 8 position, wherein the hole is completely covered by the sleeve. Hydraulic pipes connect each of the upper valve assemblies with one side of its respective jack and connects each of the lower assem~lies with the opposite side of the jack.
9~9798 VALDESPINO, JOSEPH M.
BRANDI, RONALD A.
RECREATIONAL VEHICLE LEVELING AND SUPPORT ~YS'l'~
U.S. Patent Number 4,174,094 A leveling and support system for recreational vehicles operates on a plurality of telescoping air cylinders. Leveling is accomplished through a separate valve in the line for each cylinder. Each valve is mounted adjacent the others, and adjacent an electrical switch which operates a DC motor in either a forward or a reverse direction. The motor actuates a rotary air compressor in a forward or reverse direction for changing the air pressure from positive to negative, while operating each of the valves to each cylinder line.
9 7 ~ 8 TRUNINGER, THOMAS
GUIDABLE BOGIE TRUCK FOR MOBILE CRANES
U.S. Patent Number 4,445,588 A guidable bogie truck for a mobile crane, such as a mobile gantry cane, includes a frame having longitudinal supports. A pair of wheel mechanisms connected to one end of the frame and a pair of wheel mechanism connected to the opposite end of the frame. One of the pairs of wheel mechanisms is connected to pivotable axles, which allows the associated pair of wheel mechanism to constitute guide wheel mechanisms. Four support legs are movably connected to the frames. ~ifting devices are connected to each of the four support legs to extend them downwardly to contact the ground and support the frame or to retract them upwardly towards the frame. Wheel drive motors ar'e for turning the wheel ~ 2 ~ ~ 9 79 8 mechanisms. Adjustment motors are for pivoting the pivotable wheel axles. A common control device is for controlling the operation of the bogie truck parts. A control panel on the bogie truck includes a shift lever and direction-setting parts which are connected to the common control device, to allow the operator to suitably determine the operation of the common control device and thus the bogie truck.
An automobile pneumatic jack system that can be easily attached to all currently manufactured automobile chassis and frames. There is a front suspension pneumatic jack that is mounted centrally to the front suspension of an automobile between its front wheels. There is also a rear suspension pneumatic jack that is mounted centrally to the rear suspension of the automobile between its rear wheels.
The system operates from a compressed air reservoir tank that has connections for the front and rear car jack outlets.
Additional outlets can be added to the compressed air reservoir tank, for connecting a pneumatic lug wrench and another for a tire inflating hose. A further option to the system could include a connection to the master brake cylinder such that when the car is locked, the compressed air is applied to the braking system, to lock the brakes hard on for an anti-theft feature.
SUMMARY OF THE lNv~N~ ON
A primary object of the present invention is to provide an improved hydraulic lift system that will overcome the shortcomings of the prior art devices.
Another object is to provide an improved hydraulic lift system that utilizes four hydraulic struts, in which the first pair would be mounted to the front under the carriage of a motor vehicle behind the front wheels, while the second pair would be mounted to the rear under carriage of the motor vehicle forward o~ the rear wheels.
An additional-object is to provide an improved hydraulic lift system that can be operated by the driver from inside the motor vehicle, when the engine is turned on and the tr~n~;ssion is in park or neutral position.
A still additional object is to provide an improved hydraulic lift system, in which an emergency hand pump, located under the hood, will operate the hydraulic struts when the engine fails to start.
A further object is to provide an improved hydraulic lift system that is simple and easy to use.
A still further object is to provide an improved hydraulic lift system that is economical in cost to manufacture.
Further objects of the invention will appear as the description proceeds.
To the accomplishment of the above and related objects, this invention may be embodied in the form illustrated in the accompanying drawings, attention being called to the fact, however, that the drawings are illustrative only, and that changes may be made in the specific construction illustrated and described within the scope of the appended claims.
BRIEF DESCRIPTION OF THE DR~WING FIGURES
Various other objects, features and attendant advantages of the present invention will become more fully appreciated as the same becomes better understood when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein;
FIGURE l a side perspective view of a motor vehicle with the instant invention installed and in use.
FIGURE lA is a front perspective view taken in the direction of arrow lA in Figur,e l, with the hood open, parts of the motor vehicle broken away and the hydraulic struts retracted.
~119~8 FIGURE 2 is a bottom perspective view taken in the direction of arrow 2 in Figure l, with parts of the motor vehicle broken away and the hydraulic struts retracted.
FIGURE 2A is a diagrammatic side view, showing the various components for operating the front right hydraulic strut.
FIGURE 2B is a perspective view with parts broken away and in section of some of the various components in Figure 2A, for operating the front right hydraulic strut.
FIGURE 3 is a diagrammatic bottom view as indicated by arrow 3 in Figure 2.
FIGURE 4 is an enlarged side view taken in the direction of arrow 4 in Figure 3, with parts broken away in phantom and in a dotted moved position, showing the front left hydraulic strut in greater detail.
q ~ 7 ~ 8 FIGURE 5 is a front view taken in the direction of arrow 5 in Figure l.
Similar reference characters denote corresponding features consistently throughout the attached drawings.
7 ~ 8 -15- : ~
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Turning now descriptively to the drawings, in which similar reference characters denote similar elements throughout the several views, Figures 1 through 5 illustrate an improved hydraulic lift system 10 for a motor vehicle 12, comprising a plurality of hydraulic struts 14 pivotally mounted to an undercarriage 16 of the motor vehicle 12. An apparatus 18 is for supplying hydraulic pressure through the system 10. A device 20 is for hydraulically rotating each hydraulic strut 14 from an up position to a down position.
An assemblage 22 is for hydraulically telescoping each hydraulic strut 14 from a retracted position to an extended position, so as to lift the motor vehicle 12 off of a flat support surface 24. ,, ~ a ~ 8 Each hydraulic strut 14 includes an outer cylinder 26. A piston rod 28 slides ~ithin the outer cylinder 26. A
foot pad 30 is pivotally mounted at 32 to a lower end of the piston rod 28. The foot pad 30 will engage with the flat support surface 24 when in the down position.
The hydraulic pressure supplying apparatus 18 consists of a hydraulic pump 34. A facility 36 is for mechanically operating the hydraulic pump 34 from an engine 38 of the motor vehicle 12. The mechanically operating facility 36 is a belt and pulley assembly 40 extending between the hydraulic pump 34 and the engine 38 of the motor vehicle 12.
The hydraulic pressure supplying apparatus 18 further includes a split valve 42. A unit 44 is for fluidly connecting the split valve 42 to the hydraulic pump 34. The first fluidly connecting uni~ 44 includes first and second hydraulic hose lines 46, 48 extending between the hydraulic pump 34 and the split valve 42.
~ 2 ~
Each hydraulic rotating device 20 consists of a rotary actuator 50 rotatively connected to a top end 52 of the outer cylinder 26. A reversing valve 54 is electrically connected to and operated by a remote switch (not shown). A
unit 56 is for fluidly connecting the reversing valve 54 to the rotary actuator 50. Another unit 58 is for fluidly connecting the reversing valve 54 to the split valve 42.
The second fluidly connecting unit 56 includes a third hydraulic hose line 60, extending between one side of the reversing valve 54 and the rotary actuator 50. A fourth hydraulic hose line 62 extends between an opposite side of the reversing valve 54 and the rotary actuator 50. The third fluidly connecting unit 58 is a fifth hydraulic hose line 64, extending between the split valve 42 and the reversing valve 54.
7 ~ ~
The hydraulic telescoping assemblage 22 comprises a unit 66 for fluidly connecting the split valve 42 to upper and lower portions of the outer cylinder 26 of the hydraulic strut 14. A control lever 68 is provided. A unit 70 is for fluidly connecting the control lever 68 to the split valve 42.
The fourth fluidly connecting unit 66 includes a sixth and seventh hydraulic hose lines 72, 74, extending concentrically between the split valve 42 and the upper and lower portions of the outer cylinder 26 of the hydraulic strut 14. The fifth fluidly connecting unit 70 is an eighth hydraulic hose line 76, extending between the split valve 42 and the control lever 68.
A transmission park/neutral interlock 78, as shown in Figure 2A, is coupled to the eight hydraulic hose line 76, so as to make it impossible to operate the control lever 68 and prevent accidental applia'ation while the motor vehicle 12 is in motion.
~2~9~7~8 An emergency hand pump 80, as shown in Figure lA
and 2A, can be fluidly connected into the first and second hydraulic hose lines 44 and 46 between the hydraulic pump 34 and the split valve 42. The emergency hand pump 80 will operate the hydraulic struts 14 when the engine 38 fails to start.
7 ~ ~
OPE~ATION OF THE lNV~;N~l~lON
To use the improved hydraulic lift system 10 to raise the motor vehicle 12, the following steps should be taken:
1. Engage the transmission park/neutral interlock 78.
2. Keep the engine 38 of the motor vehicle 12 running to operate the hydraulic pump 34 of the hydraulic pressure supplying apparatus 18.
, 3. Turn the remote switch on a dashboard within the motor vehicle 12 one way, to cause the rotary actuators 50 of the hydraulic rotating device 20 to lower the hydraulic struts 14 to the down position.
7 ~ ~
, 3. Turn the remote switch on a dashboard within the motor vehicle 12 one way, to cause the rotary actuators 50 of the hydraulic rotating device 20 to lower the hydraulic struts 14 to the down position.
7 ~ ~
4. Operate the control lever 68 to make the piston rods 28 in the outer cylinders 26 of the hydraulic struts 14 to go into the extended position, until the foot pads 30 contact the flat support surface 24 to lift the wheels 82 of the motor vehicle 12 off of the ~1at support surface 24.
To use the improved hydraulic lift system 10 to lower the motor vehicle 12, the following steps should be taken:
1. Operate the control lever 68 to now make the piston rods 28 in the outer cylinder 26 of the hydraulic struts 14 to go into the retracted position, so that the foot pads 30 move away from the support,surface 24 to lower the wheels 82 of the motor vehicle 12 back onto the flat support surface 24.
7 ~ ~
2. Turn the remote switch on the dashboard within the motor vehicle 12 an opposite way, to cause the rotating act~ators 50 of the hydraulic rotating device 20 to raise the hydraulic struts 14 to the up position.
3. Shut down the engine 38 of the motor vehicle 12 to stop the hydraulic pump 34 of the hydraulic pressure supplying apparatus 18 from operating.
4. Disengage the transmission park/neutral interlock 78.
It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.
While certain novel features of this invention have been shown and described are pointed out in the annexed claims, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
To use the improved hydraulic lift system 10 to lower the motor vehicle 12, the following steps should be taken:
1. Operate the control lever 68 to now make the piston rods 28 in the outer cylinder 26 of the hydraulic struts 14 to go into the retracted position, so that the foot pads 30 move away from the support,surface 24 to lower the wheels 82 of the motor vehicle 12 back onto the flat support surface 24.
7 ~ ~
2. Turn the remote switch on the dashboard within the motor vehicle 12 an opposite way, to cause the rotating act~ators 50 of the hydraulic rotating device 20 to raise the hydraulic struts 14 to the up position.
3. Shut down the engine 38 of the motor vehicle 12 to stop the hydraulic pump 34 of the hydraulic pressure supplying apparatus 18 from operating.
4. Disengage the transmission park/neutral interlock 78.
It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.
While certain novel features of this invention have been shown and described are pointed out in the annexed claims, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
Claims (30)
1. An improved hydraulic lift system for a motor vehicle comprising:
a) a plurality of hydraulic struts pivotally mounted to an undercarriage of the motor vehicle;
b) means for supplying hydraulic pressure through said system;
c) means for hydraulically rotating each said hydraulic strut from an up position to a down position; and d) means for hydraulically telescoping each said hydraulic strut from a retracted position to an extended position, so as to lift the motor vehicle off of a flat support surface.
a) a plurality of hydraulic struts pivotally mounted to an undercarriage of the motor vehicle;
b) means for supplying hydraulic pressure through said system;
c) means for hydraulically rotating each said hydraulic strut from an up position to a down position; and d) means for hydraulically telescoping each said hydraulic strut from a retracted position to an extended position, so as to lift the motor vehicle off of a flat support surface.
2. An improved hydraulic lift system as recited in Claim 1, wherein each said hydraulic strut includes:
a) an outer cylinder;
b) a piston rod that slides within said outer cylinder; and c) a foot pad pivotally mounted to a lower end of said piston rod, whereby said foot pad will engage with the flat support surface when in the down position.
a) an outer cylinder;
b) a piston rod that slides within said outer cylinder; and c) a foot pad pivotally mounted to a lower end of said piston rod, whereby said foot pad will engage with the flat support surface when in the down position.
3. An improved hydraulic lift system as recited in Claim 2, wherein said hydraulic pressure supplying means includes:
a) a hydraulic pump; and b) means for mechanically operating said hydraulic pump from an engine of the motor vehicle.
a) a hydraulic pump; and b) means for mechanically operating said hydraulic pump from an engine of the motor vehicle.
4. An improved hydraulic lift system as recited in Claim 3, wherein said mechanically operating means is a belt and pulley assembly extending between said hydraulic pump and the engine of the motor vehicle.
5. An improved hydraulic lift system as recited in Claim 2, wherein said hydraulic pressure supplying means further includes:
a) a split valve; and b) means for fluidly connecting said split valve to said hydraulic pump.
a) a split valve; and b) means for fluidly connecting said split valve to said hydraulic pump.
6. An improved hydraulic lift system as recited in Claim 5, wherein said first fluidly connecting means includes first and second hydraulic hose lines extending between said hydraulic pump and said split valve.
7. An improved hydraulic lift system as recited in Claim 5, wherein each said hydraulic rotating means includes:
a) a rotary actuator rotatively connected to an top end of said outer cylinder;
b) a reversing valve electrically connected to and operated by a remote switch;
c) means for fluidly connecting said reversing valve to said rotary actuator; and d) means for fluidly connecting said reversing valve to said split valve.
a) a rotary actuator rotatively connected to an top end of said outer cylinder;
b) a reversing valve electrically connected to and operated by a remote switch;
c) means for fluidly connecting said reversing valve to said rotary actuator; and d) means for fluidly connecting said reversing valve to said split valve.
8. An improved hydraulic lift system as recited in Claim 7, wherein said second fluidly connecting means includes:
a) a third hydraulic hose line extending between one side of said reversing valve and said rotary actuator; and b) a fourth hydraulic hose line extending between an opposite side of said reversing valve and said rotary actuator.
a) a third hydraulic hose line extending between one side of said reversing valve and said rotary actuator; and b) a fourth hydraulic hose line extending between an opposite side of said reversing valve and said rotary actuator.
9. An improved hydraulic lift system as recited in Claim 7, wherein said third fluidly connecting means includes a fifth hydraulic hose line extending between said split valve and said reversing valve.
10. An improved hydraulic lift system as recited in Claim 5, wherein said hydraulic telescoping means includes:
a) means for fluidly connecting said split valve to upper and lower portions of said outer cylinder of said hydraulic strut;
b) a control lever; and c) means for fluidly connecting said control lever to said split valve.
a) means for fluidly connecting said split valve to upper and lower portions of said outer cylinder of said hydraulic strut;
b) a control lever; and c) means for fluidly connecting said control lever to said split valve.
11. An improved hydraulic lift system as recited in Claim 10, wherein said fourth fluidly connecting means includes sixth and seventh hydraulic hose lines extending concentrically between said split valve and the upper and lower portions of said outer cylinder of said hydraulic strut.
12. An improved hydraulic lift system as recited in Claim 10, wherein said fifth fluidly connecting means is an eighth hydraulic hose line extending between said split valve and said control lever.
13. An improved hydraulic lift system as recited in Claim 12, further including a transmission park/neutral interlock coupled to said eighth hydraulic hose line, so as to make it impossible to operate said control lever and prevent accidental application while the motor vehicle is in motion.
14. An improved hydraulic lift system as recited in Claim 12, further including an emergency hand pump fluidly connected into said first and second hydraulic hose lines between said hydraulic pump and said split valve, so that said emergency hand pump will operate said hydraulic struts when the engine fails to start.
15. An improved hydraulic lift system for a motor vehicle comprising:
a) a plurality of hydraulic struts pivotally mounted to an undercarriage of the motor vehicle;
b) means for supplying hydraulic pressure through said system;
c) means for hydraulically rotating each said hydraulic strut from an up position to a down position; and d) means for hydraulically telescoping each said hydraulic strut from a retracted position to an extended position, so as to lift the motor vehicle off of a flat support surface.
a) a plurality of hydraulic struts pivotally mounted to an undercarriage of the motor vehicle;
b) means for supplying hydraulic pressure through said system;
c) means for hydraulically rotating each said hydraulic strut from an up position to a down position; and d) means for hydraulically telescoping each said hydraulic strut from a retracted position to an extended position, so as to lift the motor vehicle off of a flat support surface.
16. An improved hydraulic lift system as recited in Claim 15, wherein each said hydraulic strut includes:
a) an outer cylinder;
b) a piston rod that slides within said outer cylinder; and c) a foot pad pivotally mounted to a lower end of said piston rod, whereby said foot pad will engage with the flat support surface when in the down position.
a) an outer cylinder;
b) a piston rod that slides within said outer cylinder; and c) a foot pad pivotally mounted to a lower end of said piston rod, whereby said foot pad will engage with the flat support surface when in the down position.
17. An improved hydraulic lift system as recited in Claim 16, wherein said hydraulic pressure supplying means includes:
a) a hydraulic pump; and b) means for mechanically operating said hydraulic pump from the engine of the motor vehicle.
a) a hydraulic pump; and b) means for mechanically operating said hydraulic pump from the engine of the motor vehicle.
18. An improved hydraulic lift system as recited in Claim 17, wherein said mechanically operating means is a belt and pulley assembly extending between said hydraulic pump and the engine of the motor vehicle.
19. An improved hydraulic lift system as recited in Claim 18, wherein said hydraulic pressure supplying means further includes:
a) a split valve; and b) means for fluidly connecting said split valve to said hydraulic pump.
a) a split valve; and b) means for fluidly connecting said split valve to said hydraulic pump.
20. An improved hydraulic lift system as recited in Claim 19, wherein said first fluidly connecting means includes first and second hydraulic hose lines extending between said hydraulic pump and said split valve.
21. An improved hydraulic lift system as recited in Claim 20, wherein each said hydraulic rotating means includes:
a) a rotary actuator rotatively connected to an top end of said outer cylinder;
b) a reversing valve electrically connected to and operated by a remote switch;
c) means for fluidly connecting said reversing valve to said rotary actuator; and d) means for fluidly connecting said reversing valve to said split valve.
a) a rotary actuator rotatively connected to an top end of said outer cylinder;
b) a reversing valve electrically connected to and operated by a remote switch;
c) means for fluidly connecting said reversing valve to said rotary actuator; and d) means for fluidly connecting said reversing valve to said split valve.
22. An improved hydraulic lift system as recited in Claim 21, wherein said second fluidly connecting means includes:
a) a third hydraulic hose line extending between one side of said reversing valve and said rotary actuator; and b) a fourth hydraulic hose line extending between an opposite side of said reversing valve and said rotary actuator.
a) a third hydraulic hose line extending between one side of said reversing valve and said rotary actuator; and b) a fourth hydraulic hose line extending between an opposite side of said reversing valve and said rotary actuator.
23. An improved hydraulic lift system as recited in Claim 22, wherein said third fluidly connecting means includes a fifth hydraulic hose line extending between said split valve and said reversing valve.
24. An improved hydraulic lift system as recited in Claim 23, wherein said hydraulic telescoping means includes:
a) means for fluidly connecting said split valve to upper and lower portions of said outer cylinder of said hydraulic strut;
b) a control lever; and c) means for fluidly connecting said control lever to said split valve.
a) means for fluidly connecting said split valve to upper and lower portions of said outer cylinder of said hydraulic strut;
b) a control lever; and c) means for fluidly connecting said control lever to said split valve.
25. An improved hydraulic lift system as recited in Claim 24, wherein said fourth fluidly connecting means includes sixth and seventh hydraulic hose lines extending concentrically between said split valve and the upper and lower portions of said outer cylinder of said hydraulic strut.
26. An improved hydraulic lift system as recited in Claim 25, wherein said fifth fluidly connecting means is an eighth hydraulic hose line extending between said split valve and said control lever.
27. An improved hydraulic lift system as recited in Claim 26, further including a transmission park/neutral interlock coupled to said eighth hydraulic hose line, so as to make it impossible to operate said control lever and prevent accidental application while the motor vehicle is in motion.
28. An improved hydraulic lift system as recited in Claim 27, further including an emergency hand pump fluidly connected into said first and second hydraulic hose lines between said hydraulic pump and said split valve, so that said emergency hand pump will operate said hydraulic struts when the engine fails to start.
29. An improved hydraulic lift system for a motor vehicle comprising:
A) a plurality of hydraulic struts pivotally mounted to an undercarriage of the motor vehicle, each of said struts including:
i) an outer cylinder;
ii) a piston rod that slides within said outer cylinder;
and iii) a foot pad pivotally mounted to a lower end of said piston rod, whereby said foot pad will engage with the flat support surface when in the down position;
B) means for supplying hydraulic pressure through said system, said hydraulic pressure supplying means including:
i) a hydraulic pump;
ii) means for mechanically operating said hydraulic pump from the engine of the motor vehicle, said mechanically operating means comprising a belt and pulley assembly extending between said hydraulic pump and the engine of the motor vehicle;
iii) a split valve; and iv) means for fluidly connecting said split valve to said hydraulic pump, said fluidly connecting means including first and second hydraulic hose lines extending between said hydraulic pump and said split valve;
C) means for hydraulically rotating each said hydraulic strut from an up position to a down position, each said hydraulic rotating means including:
i) a rotary actuator rotatively connected to a top end of said outer cylinder;
ii) a reversing valve electrically connected to and operated by a remote switch;
iii) means for fluidly connecting said reversing valve to said rotary actuator, said fluidly connecting means including:
a) a third hydraulic hose line extending between one side of said reversing valve and said rotary actuator; and b) a fourth hydraulic hose line extending between an opposite side of said reversing valve and said rotary actuator; and iv) means for fluidly connecting said reversing valve to said split valve, said fluidly connecting means including a fifth hydraulic hose line extending between said split valve and said reversing valve;
D) means for hydraulically telescoping each said hydraulic strut from a retracted position to an extended position, so as to lift the motor vehicle off of a flat support surface, said hydraulic telescoping means including:
i) means for fluidly connecting said split valve to upper and lower portions of said outer cylinder of said hydraulic strut, said fluidly connecting means including sixth and seventh hydraulic hose lines extending concentrically between said split valve and the upper and lower portions of said outer cylinder of said hydraulic strut;
ii) a control lever; and iii) means for fluidly connecting said control lever to said split valve, said fluidly connecting means comprising and eighth hydraulic hose line extending between said split valve and said control lever; and E) a transmission park/neutral interlock coupled to said eighth hydraulic hose line, so as to make it impossible to operate said control lever and prevent accidental application while the motor vehicle is in motion.
A) a plurality of hydraulic struts pivotally mounted to an undercarriage of the motor vehicle, each of said struts including:
i) an outer cylinder;
ii) a piston rod that slides within said outer cylinder;
and iii) a foot pad pivotally mounted to a lower end of said piston rod, whereby said foot pad will engage with the flat support surface when in the down position;
B) means for supplying hydraulic pressure through said system, said hydraulic pressure supplying means including:
i) a hydraulic pump;
ii) means for mechanically operating said hydraulic pump from the engine of the motor vehicle, said mechanically operating means comprising a belt and pulley assembly extending between said hydraulic pump and the engine of the motor vehicle;
iii) a split valve; and iv) means for fluidly connecting said split valve to said hydraulic pump, said fluidly connecting means including first and second hydraulic hose lines extending between said hydraulic pump and said split valve;
C) means for hydraulically rotating each said hydraulic strut from an up position to a down position, each said hydraulic rotating means including:
i) a rotary actuator rotatively connected to a top end of said outer cylinder;
ii) a reversing valve electrically connected to and operated by a remote switch;
iii) means for fluidly connecting said reversing valve to said rotary actuator, said fluidly connecting means including:
a) a third hydraulic hose line extending between one side of said reversing valve and said rotary actuator; and b) a fourth hydraulic hose line extending between an opposite side of said reversing valve and said rotary actuator; and iv) means for fluidly connecting said reversing valve to said split valve, said fluidly connecting means including a fifth hydraulic hose line extending between said split valve and said reversing valve;
D) means for hydraulically telescoping each said hydraulic strut from a retracted position to an extended position, so as to lift the motor vehicle off of a flat support surface, said hydraulic telescoping means including:
i) means for fluidly connecting said split valve to upper and lower portions of said outer cylinder of said hydraulic strut, said fluidly connecting means including sixth and seventh hydraulic hose lines extending concentrically between said split valve and the upper and lower portions of said outer cylinder of said hydraulic strut;
ii) a control lever; and iii) means for fluidly connecting said control lever to said split valve, said fluidly connecting means comprising and eighth hydraulic hose line extending between said split valve and said control lever; and E) a transmission park/neutral interlock coupled to said eighth hydraulic hose line, so as to make it impossible to operate said control lever and prevent accidental application while the motor vehicle is in motion.
30. An improved hydraulic lift system as recited in Claim 29, further including an emergency hand pump fluidly connected into said first and second hydraulic hose lines between said hydraulic pump and said split valve, so that said emergency hand pump will operate said hydraulic struts when the engine fails to start.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002199798A CA2199798A1 (en) | 1997-03-12 | 1997-03-12 | Improved hydraulic lift system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002199798A CA2199798A1 (en) | 1997-03-12 | 1997-03-12 | Improved hydraulic lift system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2199798A1 true CA2199798A1 (en) | 1998-09-12 |
Family
ID=4160156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002199798A Abandoned CA2199798A1 (en) | 1997-03-12 | 1997-03-12 | Improved hydraulic lift system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2199798A1 (en) |
-
1997
- 1997-03-12 CA CA002199798A patent/CA2199798A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20010312 |