Abstract: The present invention relates to an automated jacking system for lifting an automobile comprising: a plurality of mounted jacks, wherein each mounted jack includes an I-shaped assembly; a control means; and an activation means. Each mounted jack is firmly attached to each end of each axle of the automobile. The control means may include either a control panel within the interior of the automobile or a remote handheld control device. The activation means includes a motor on each mounted jack, wherein each mounted jack includes a base, a mounting bracket and a cylindrical body. The cylindrical body connects the mounting bracket to the base. A plurality of bolts firmly attaches each mounted jack to the respective axle. The mounted jacks according to the present invention may use either pneumatic or hydraulic means of power within the cylindrical body.

Abstract: An improved jacking system for a liftboat with a high speed manifold system with high speed motors and high speed planetary gear drives, a heavy lift manifold system with heavy lift motors and heavy lift planetary gear drives, and bypass valves for diverting hydraulic pressure between the high speed manifold system and the heavy lift manifold system. The improved jacking system makes the boat easier to position precisely and expands the weather and sea condition envelope the liftboat can operate in by reducing its exposure to multiple impact stresses while jacking up in rough sea conditions. The improved jacking system also serves as a safety device which can quickly “tag” the bottom to stop and stabilize the liftboat's motion in a close situation.

Abstract: Described herein is a hydraulic suspension system mounted on a vehicle, including a plurality of hydraulic suspension units having a section of the vehicle corresponding thereto, and a hydraulic power means in communication with the plurality of hydraulic suspension units for providing a hydraulic fluid under pressure to actuate the plurality of hydraulic suspension units. The hydraulic suspension system mounted on a vehicle further includes a plurality of hydraulic valve assemblies associated with each of the plurality of hydraulic suspension units, wherein the plurality of hydraulic valve assemblies are in fluid communication between the plurality of hydraulic suspension units and the hydraulic power means, and a control means for controlling each of the hydraulic valve assemblies associated with each of the plurality of hydraulic suspension units.

Abstract: A vehicle leveling assembly includes a plurality of jack assemblies corresponding to four quadrants of a vehicle, and a plurality of sensors for determining jack position and rate of movement. A method of detecting contacting between the shafts of the Jack assemblies and the ground includes measuring pulse width of current emitted by the hall effect sensor to monitor the speed of the shafts and recognizing contact with the ground when the shaft slows down. A method of detecting contacting between the shafts of the jack assemblies and the ground includes measuring the electric motor current signal and correlating a pulse from the current signal to the electric motor revolutions per minute and travel of the shafts. A method of calibrating the leveling assembly includes measuring a change in inclination as the jack assemblies are extended a known distance to determine the distance between the jack assemblies.

Abstract: A lever actuated jack may be mounted to a trailer. An inner jack tube slidably engages the outer jack tube. A lever is attached to the upper end of the inner jack tube, or to an inner support bracket that communicates with an upper portion of the inner jack tube. The lever is pivoted, applying a downward force to the inner jack tube, which pushes the tongue of the trailer up to elevate the tongue of the trailer as required. The lever is sufficiently long to provide adequate mechanical advantage to force the tongue of a loaded trailer upwardly the required distance. The lever may be pivoted in the opposite direction to lower the tongue of the trailer by pulling the inner jack tube within the outer jack tube.

Abstract: A pneumatic cylinder assembly and a method for lifting a hand truck frame generally vertically away from a ground surface exploits a cylinder housing including a longitudinal axis and first and second ends. The cylinder housing defines a cylinder cavity at the first end and a port generally at the second end in operative communication with the cylinder cavity and has at least one frame attachment point for attachment of the housing to the hand truck frame. A piston in the cylinder cavity is moveable in a first direction. A fluid space is defined between the actuation surface within the cylinder housing. An inlet valve is configured to admit a working fluid into the fluid space through the port at a pressure greater than an ambient pressure, thereby urging the piston in the first direction thereby to cause the movement of the piston in the first direction lifting the truck.

Abstract: A lift system for integration with the air suspension system of a truck for raising the rear of the truck so that the trailer can be attached and the landing gear let up includes an air dump valve, two air control switch valves, one one-way valve, one air gauge rated to 100 psi., one air regulator, an on/off control switch, a safety alarm buzzer, and the appropriate number and size of fittings and airlines. The on/off control switch is located within the cab of the truck and allows the operator to manually engage or disengage the lift system. The lift system is interconnected to and powered by the truck's main battery and main air supply whereupon engagement of the lift system facilitates the alignment and connection of the rear of the truck to the trailer and removes the weight from the truck's landing gear by raising the landing gear so that the landing gear can be let up.

Abstract: A trailer jack system includes an electric linear actuator having an electric motor, a source of electric power, and a controller that supplies a first voltage to the electric motor when the electric linear actuator is loaded and a second voltage to the electric motor when the electric linear actuator is unloaded. The electric linear actuator also includes a cylindrically shaped housing, a leg coaxially extending and retracting from the housing, and a support foot at a free end of the leg. The controller supplies the first voltage to the electric motor when a motor current of the electric motor is below a predetermined threshold value and supplies the second voltage to the electric motor when the motor current is above the predetermined threshold value. Preferably, the first voltage is about 24 volts and the second voltage is about 12 volts.

Abstract: A leveling system for use with recreational vehicles having one or more leveling mechanisms to level the vehicle in the side-to-side and front-to-back directions. The invention comprises a level unit that is placed on a generally horizontal surface inside the vehicle and a control unit which is in spaced apart relation to the level unit. Both units have a controller and transceiver for wireless communication with the other unit and one or more batteries as the power supply. The level unit has one or more level sensing mechanisms to determine the pitch and roll of the vehicle. Preferably, a single dual-axis tilt measuring mechanism is utilized. The control unit has one or more control buttons to allow the operator to activate and operate the system and a display panel that displays the amount of pitch and roll correction necessary to place the recreational vehicle in its level condition.

Abstract: An automobile pneumatic jacking system, that has integrated safety features as well as external safety adapters, for the purpose of conveniently and safely suspending a tire off the ground for changing and/or repairing.

Abstract: A leveling leg assembly adapted for mounting to a vehicle includes an outer member and an inner member telescoped slidably into the outer member. The inner member has a first end extending beyond the outer member. The inner member is telescopically driven out of the outer member from a retracted position toward an extended position. A first bracket is fixed to the outer member, and a second bracket is fixable to the vehicle, wherein one of the first and second brackets has a plurality of holes formed therethrough, and the other of the first and second brackets has at least one hole formed therethrough that is aligned with at least one of the plurality of holes to fix the first bracket relative to the second bracket at a desired height relative to the vehicle.

Abstract: “DISPOSITION INTRODUCED TO HYDROPNEUMATIC JACK”, according to description of the report and the annexed illustrations, it is about a new disposition for a hydropneumatic device that is used to lift and support hauler and semi-haulers, whereby the device was designed to offer more operational easiness to the driver through the increase of speed, as well as the durability of the set.

Abstract: A hydroelectric jack system, which is mounted on the underside of the vehicle. It comprises of two conventional double direction hydraulic jacks. The jack has a round flat plate which rests on the ground when jack is operated to lift the vehicle. It can be remotely operated using push button controls installed in the dashboard of the vehicle. It utilizes the existing hydraulic cylinder provided currently in the vehicle for their operation(s) e.g. the hydraulic systems to operate steering unit or any other devices. The jack system has safety checks—the electrical circuit of the hydroelectric jack does not operate till the emergency brake is applied. An auto lock system ensures the jack will not open accidentally. In case of a car, jack can be installed on to the floor beam inside the body. Jack is firmly placed in the specially designed hole of required diameter. Jack on both driver's and adjoining seat duly balances the weight of the car.

Abstract: A multistage mast assembly for use on a lift truck and method of operation for staging first and second mast sections of the multistage mast assembly. Each mast section has a retracted position and an extended position. The apparatus includes a mast staging hydraulic circuit which diverts hydraulic fluid from the second mast section actuator to the first mast section actuator using a multi-position valve having an open position and a restricted flow position. In the restricted flow position, hydraulic pressure in a hydraulic line supplying the second mast section increases to divert hydraulic fluid to the first mast section actuator before the second mast section reaches its extended position.

Abstract: An improved integrated combination of an automobile and jack structures attached to the reinforced lift points on each side of the automobile adjacent its wheel wells is a rigid orthogonally telescoping housing which includes a plurality of jacks, each jack having telescoping interconnected cylinders containing a valve sealed expandable pneumatic plenum within the housing, wherein the pneumatic interconnected cylinders are arranged for selective inflation by use of a pneumatically connected 12 volt DC pneumatic compressor that in turn is operative through an electrical supply line that is hard wired to an electrical system or battery of the automobile to receive electrical energy. A set of control switches is electrically connected to each of the compressors wherein each selected corner of the automobile can be lifted by a separate telescoping housing.

Abstract: An automobile pneumatic jack assembly includes at least one pneumatic cylinder assembly capable of lifting a vehicle to a suitable height to allow repairs to tires and other vehicle parts; at least one compressor, at least one distribution manifold assembly, and electrical controls for controlling the operation of the pneumatic jack assembly. The automobile pneumatic jack assembly may include up to four pneumatic cylinders mounted at various locations on an automobile chassis having a frame. The pneumatic cylinder assemblies are preferably mounted to the automobile chassis through the frame by welding, mechanical fasteners, or any other suitable mechanisms.

Abstract: An automatic jacking system for automotive vehicles includes four sculpe jacks hingably mounted to the frame of the vehicle adjacent the vehicle wheels and hydraulic and electrical lines that communicate with the jacks for operating and controlling the jacks. The hydraulic lines couple the jacks to a fluid reservoir and pump of the hydraulic system, and the electrical lines extend from individual solenoids mounted on each jack to a control panel wherein an in-line fuse is disposed between the solenoids and the control panel switches for that jack and wheel. The control panel also includes a pressure switch for locking each jack in place, and each jack has an associated leak detection sensor that communicates with the control panel switch associated with that jack so that detection of a leak will cause the control panel switch for that jack to blink on and off thereby alerting the individual of a dangerous condition.

Abstract: A power-operated vehicle-lifting system includes a first housing secured to a select portion of a vehicle frame and a first lifting mechanism disposed within the first housing. Such a lifting mechanism is electrically coupled to a power source and includes a reversible motor, and a hydraulic jack operably connected to thereto. The lifting mechanism is pivotal between operating and non-operating positions wherein the jack can be extended and retracted for lifting a vehicle off a ground surface. The present invention may include a second lifting mechanism for cooperating with the first lifting mechanism so that a vehicle may be lifting in a preferred direction.

Abstract: A hydraulic lift for a truck trailer, having a pair of hydraulic cylinders mounted to the under side of a semi-trailer. The bottom of the cylinder pistons are connected to a foot, which sits on the ground. A telescoping jackstand positioned between the two cylinders, and can be locked into its extended position with a locking pin. The jackstand acts as a safety device in case the hydraulic system looses pressure, and also acts to take the load off of the hydraulic cylinders when the trailer needs to sit for extended periods of time.

Abstract: A vehicle lifting and wheel removal combination system includes a hydraulic pump mounted on a vehicle. Each of a plurality of hydraulic jacks is fluidly coupled to the hydraulic pump. Each of the hydraulic jacks is mounted to a frame of the vehicle. A plurality of actuators is operationally coupled to the hydraulic pump for selectively positioning each of the hydraulic jacks in an extended position or a retracted position. A plurality of air compressors is mounted to the vehicle and each is operationally coupled to the power supply. Each of a plurality of air lines is fluidly coupled to one of the air compressors. Each of the air lines has a free end having a first mating portion coupled thereto. A pneumatic impact gun for removing lug nuts has a second mating portion for selectively coupling to one of the first mating portions of the air lines.

Abstract: A vehicle jacking system for jacking up a quadrant of a vehicle to facilitate a maintenance action. The vehicle jacking system includes an automobile having a chassis and a body; at least one jacking assembly operationally coupled to the chassis, for facilitating elevation a quadrant of the automobile.

Abstract: A permanently mounted pneumatic jack (jacklift) system for motor vehicles, as well as an impact wrench for removing and installing lug nuts. The system provides a quick and safe means of lifting one or more tires off the ground for replacement of a spare or rotating the tires on a motor vehicle. The present invention comprises two or more (typically four) pneumatic jacks, a system ON/OFF switch, an air compressor, a 120-psi air tank, air lines (hoses), individual jack extend/retract switches, jack position-locking pins, safety-locking pins, and impact wrench. Each jack can be locked in a horizontal stowaway or vertical operational position. The jack is cylindrical shaped with a telescopic body that can be extended or retracted as needed to raise and lower the vehicle. A solid cylindrical lift rod slides inside a cylindrical outer housing with a high-pressure seal means used to maintain pressure on the support rod.

Abstract: A tire changing kit for quickly changing tires on a vehicle. The tire changing kit includes a power supply being adapted to be disposed in a vehicle and including a motor having a rotatable shaft and being adapted to be connected with wires to a power source of the vehicle and also including hoses; and also includes a jack being detachably connected to one of the hoses for raising and lowering the vehicle; and further includes an assembly of removing lugs from a tire of the vehicle including an air gun being connected to another one of the hoses.

Abstract: A one piece assembly of a small production unit (23) for panels intended for building comprises an upper tray (2) a bottom tray of longer length (1) a collapsible crane (7) situated on the upper tray (2) supporting the crane structure (7) is horizontally mobile with rollers (11) supported on rail (12) positioned on the bottom tray (1) without requiring an external support lying on the ground. The vertical movement of the upper tray (2) is assured by an assembly of screw jacks (4), plates (18), guides (14) and runners (13). The compact assembly (23) of the production unit can be moved from site to site without heavy handling movement.

Abstract: Method and apparatus for elevating an object by a member secured to the object for the elevation thereof; and a mechanism for operating the elevation member, which can be positioned beneath the object, such as a vehicle, where the elevation member is a source of fluid pressure, which can be gaseous or hydraulic and is connected to the member for elevating the vehicle or a portion thereof such as a wheel.

Abstract: A hydraulic conversion kit designed to convert a manual jack to hydraulic, with the use of a 12V hydraulic pump, special mounting brackets, and a hydraulic motor. This changes the manual jack to the ease of push button operation.

Abstract: A pneumatic jack energized from a container having a pressurized gas therein for rapidly and effortlessly lifting an object such as a motor vehicle including an automobile, a van, and a truck for one purpose of changing a tire that has gone flat is disclosed. The pneumatic jack has a housing with a piston slideably disposed in a chamber therein cooperating with a lifting element, a hose connected between the housing and the container, a gas fill valve and a throttle valve for controlling the pressure to the piston for raising and for maintaining the lifted object in an elevated position and a handle pivotally connected to the housing for manipulating the pneumatic jack for placement under the motor vehicle.

Abstract: A self-contained vehicular jacking system for raising a portion or portions of a vehicle off the ground automatically by depressing associated control buttons from within the vehicle. The self-contained vehicular jacking system includes a compressed air tank pneumatically coupled to pneumatic cylinders positioned near the wheels of a vehicle. The cylinders are controlled from inside the vehicle by activation of buttons on a control panel, thereby selectively raising portions of the vehicle for service.

Abstract: A lifting system for raising a vehicle having a plurality of wheels. The system comprises: (a) one or more jacks capable of being extended and retracted, each jack being attached to the underside of the vehicle proximate to one of the wheels; and (b) a control device capable of independently controlling the extension and retraction of each of the jacks. Also disclosed is a method for lifting a vehicle.

Abstract: A device is designed to prevent a car theft and is provided with a remote controller for activating or deactivating the device. The device comprises a control unit, one or more oil pressure jacks, one or more oil pressure driving apparatus, and a plurality of sensors capable of transmitting a triggering signal to the control unit at such time when the car body is exerted on by external forces. As the control unit is triggered, the oil pressure driving apparatus are actuated to drive the oil pressure jacks to hoist the car body, thereby preventing the car from being driven away by an unauthorized person.

Abstract: The invention relates to a lifting device for lifting heavy loads, e.g. derailed rail vehicles, for permanent or temporary installation, having at least one cylinder, in particular hydraulic cylinder, for actuating a mechanical ram, in which device cylinder 2 and ram 3 are separate from one another and the ram 3 is accommodated in a guide tube 4.

Abstract: An automatic jack and wheel change system having at least one inverted jack driven by an electric motor permanently attached to the vehicle. The system may employ a jack disposed between the front and rear wheel on each side of the vehicle, or it may be equipped with a jack at each of the four wheels. The system also features a novel wheel and hub-axle assembly featuring a split axle whose length may be adjusted by operation of an electric motor. The hub has a plurality of arms extending from the hub in a star-shape, each arm having a finger at its free end. The wheel has a plurality of slots defined therein so that the wheel may be removed by aligning the slots with the arms on the hub and pulling the wheel off when the axle is extended, and a plurality of holes defined therein for receiving the fingers to lock the wheel on the hub when the axle is retracted. Both the motor for raising the jack and the motor for adjusting the length of the axle may be operated by remote control.

Abstract: A vehicle lift system for lifting a corner of a vehicle by remote control. The vehicle lift system includes a rail system, a hydraulic jack mounted to and movable on the rail system, and a processor system for controlling the rail system. The rail system has a first rail, a second rail and third rail. The first rail comprises an elongate bar. The bar has a first end and a second end. Each of the ends of the bar has a mounting member thereon for mounting the rail to the vehicle. A second rail is substantially identical to the first rail, and is mounted to the bottom portion of the vehicle. The second rail is spaced from the first rail and is oriented generally parallel to the first rail. A third rail has a first and a second end, which are coupled to the first and second rails. The first and second rails are adapted to slide the third rail along a length of the first and third rails. The hydraulic jack has a base portion and a top portion. The base portion is adapted to slide along third rail.

Abstract: Jack for raising and lowering a lift assembly for hydraulically driven snow blades or other utilitarian accessories. Actuation of the jack allows for proper vertical alignment of the lift assembly for engagement to a vehicle chassis. Once engaged, the jack can be actuated into an inoperative position until the lift assembly is to be removed from the chassis.

Abstract: A vehicular hydraulic jack system is provided including a jack assembly having a base with a hydraulic cylinder mounted thereon for raising the jack assembly upon the receipt of pressurized fluid and lowering the jack assembly upon the release of pressurized fluid. Also included is a hose having a first end coupled to a power steering pump of a vehicle for receiving pressurized fluid therefrom and a second end coupled to the hydraulic cylinder of the jack assembly for supplying pressurized fluid to the hydraulic cylinder of the jack assembly.

Abstract: An adaptive portable lifting and leveling apparatus that forms an emergency jacking system useful in lifting, leveling, or otherwise stabilizing a variety of vehicles such as trailer structures. The apparatus primarily includes a lifting device having an anchoring bracket that functions as a pivot point, a mid-section, and a jack base of a standard type each being removably connected together in series. A hydraulic jack is preferred. The mid-section may be of a fixed length or may be telescoping such that the device includes a two stage adjustment with course adjustment via the telescoping mid-section and fine adjustment via the hydraulic jack base. Multiple anchoring brackets may be placed upon a surface of a structure to be lifted. The device may be quickly and easily moved to any one of the multiple brackets as desired. The device may be stored in a tucked-away position under the structure to be lifted. Alternatively, the device may be detached and stored elsewhere.

Abstract: A trailer landing gear lifting apparatus (100) for raising and lowering landing gear (10) of a trailer (30) has a wrench (102) connected by an air hose (102, 222) to an air supply line ((212) and, optionally, to an air tank (210). An attachment bracket (104), a keeper arm (106) and a wrench bracket (110) optionally secure the wrench (102) to a pair of I beams (112) of the trailer (30) such that the wrench (102) is affixed to the trailer (30).

Abstract: A tire changing system with frame mounted jacks and lug wrench comprising a vehicle having a plurality of wheels and a frame with a pair of longitudinal lower supports horizontally situated on a lower surface thereof adjacent to sides thereof; four housings each having a horizontally oriented upper extent, a vertically oriented intermediate extent integrally coupled perpendicularly to an edge of the first horizontally extent, and a horizontally oriented open lower extent; four jacks coupled to the upper extent of an associated housing, each having an extended position upon the receipt of a raise signal for raising an associated wheel above the ground and a retracted position upon the receipt of a lower signal for lowering an associated wheel to the ground thus allowing normal operation thereof; and a control mechanism for allowing a user to selectively transmit to the jacks the raise signal and the lower signal.

Abstract: A lifting system for moving mobile homes that includes wheeled jack assemblies, jack units assembled from such assemblies and a segmented track for supporting such assemblies and units. Each jack assembly preferably includes a jack rollingly carried on wheels, and a roller head operatively connected to the working end of the jack to move from a lowered position to a raised position. The wheels allow lateral adjustment of the home, while the roller head allows longitudinal adjustment of the home. In the preferred embodiment, each jack unit includes two jack assemblies, with one of the assemblies further including a drive motor operatively connected to its wheels. Furthermore, the assemblies are interconnected by a hydraulic power unit in the form of a housing that encloses and protects the hydraulics for controlling each jack and drive motor. Each segment in the segmented track generally includes a pair of rails structurally interconnected, with a hole formed adjacent each end of the segment.

Abstract: A vehicular hydraulic jack system is provided including a fluid reservoir mounted within the vehicle and a fluid pump connected to the fluid reservoir. The fluid pump is adapted to generate pressurized fluid upon the actuation thereof and further release pressurized fluid when deactuated. Four hydraulic jacks each include a cylinder adapted to extend downwardly upon receipt of pressurized fluid and further retract when the pressurized fluid is released therefrom. Also included is a transmission control mechanism including a sensor for generating a park signal only when a transmission of the vehicle is placed in a park mode. A hydraulic jack control panel functions to direct and release pressurized fluid to and from the hydraulic jacks via the fluid pump only upon the receipt of the park signal.

Abstract: Disclosed is a rerailer apparatus that can be installed in a rail car for rerailing the rail car if it derails. The rerailer includes two vertical lifting members which are suspended from the rail car and are connected to a foot. These lifting members are used to lift the rail car vertically when the lifting members are extended and the foot contacts a support surface. A lateral movement member integrated with the vertical lifting members and the foot is used to move the lifted rail car laterally.

Abstract: A new Vehicle Selective Jacking System for automatically or manually elevating a motor vehicle for selectively making repairs. The inventive device includes an air compressor, a control panel electrically coupled to the air compressor, and a plurality of air jacks secured to the motor vehicle and connected to the air compressor by tubing. In an alternative embodiment, each air jack includes a handle for manually elevating the motor vehicle.

Abstract: Disclosed is a rerailer apparatus that can be installed in a rail car for rerailing the rail car if it derails. The rerailer includes two vertical lifting members which are suspended from the rail car and are connected to a foot. These lifting members are used to lift the rail car vertically when the lifting members are extended and the foot contacts a support surface. A lateral movement member integrated with the vertical lifting members and the foot is used to move the lifted rail car laterally.

Abstract: The system is adapted for use with a portable dental delivery system and provides a selector for activating one of two handpieces. When one of the handpieces is to be activated, the supporting base is lifted from its wheels by a pneumatic support assembly that is controlled by the same valve system.

Abstract: A vehicle mounted tire changing system is provided of the type having a hydraulic jack system connected to a vehicle for lifting a portion of the vehicle relative to the supporting terrain and a pneumatic system carried by the vehicle for connecting air operated tools.

Abstract: A new and improved hydraulic jack system operable from the dashboard of an automobile. The system is for use in raising the front right, front left, rear right or rear left portions of an automobile by way of the front or rear axles. The system achieves this through the use of four separate hydraulic jacks, two positioned at either end of the front axle and two positioned at either end of the rear axle. With the system of the present invention a user can raise a single portion of the automobile (eg the front right or front left) or all portions simultaneously.

Abstract: Mobile medical lifting apparatus comprising a mobile support means having wheels, castors or rollers, which mobile support means supports or provides a mounting for a lifting device comprising a stack of inflatable bags for raising a seat or platform supported by the lifting device, an inflatable bag at the bottom of the lifting device is actuable to raise the wheels, castors or rollers off the ground to enable the wheels, castors or rollers, and, optionally, associated parts of the mobile support means, to be removed so that the lifting device can lower the seat or platform to very close to the ground to minimize the effort required to move a fallen person onto the platform.

Abstract: A portable, manually operated shaft handling apparatus (10), supported by swiveling wheels (12), (13), and (14) having a carriage (60) capable of counterbalancing the weight of the shaft (18) using air springs (50), and (51). The carriage will receive the shaft from the hoist (16) of an unwinding machine, and will strip the core (19) of an expended roll from the shaft utilizing compressed air. The apparatus is able to transport the shaft and insert it into the core of a new web roll (17) without any manual handling of the shaft. The apparatus can be adjusted for use with a variety of shafts having different weights and lengths.

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.

Abstract: A trailer with wheels located near its rearward end and a connecting arm extending from a mid-region of the forward end of the trailer. The connecting arm includes a gooseneck with a ball receptacle to connect with a ball protruding upwardly from the truck bed. A shroud is connected to the forward end of the trailer beneath the connecting arm and a powered hydraulic cylinder is carried inside the shroud and includes a rod extending downwardly to raise and lower the front of the trailer. A stabilizer arm terminating in a foot portion is carried by the shroud to extend downwardly and co-extensively with the rod to protect the hydraulic cylinder and rod from loading other than by the weight of the trailer and its load.