Abstract: Disclosed is a combination vehicle jack and directable light source. The light source provides one or more beams of light which are independently directable relative to the base of the jack. The light source may be battery powered, pivotal, flexible, and/or detachable.

Abstract: An automotive vehicle body lifter jacking system is described which raises a vehicle' body at selective heights from its frame for restoration and repairs. The body lifter has a rectangular frame made of square steel tubing having threaded apertures at each corner. Elongated, threaded jacking bolts are secured to each respective aperture for selectively lifting a body from the frame of a vehicle. The jacking system is actuated mechanically, hydraulically or electrically to raise the lifter. Wheels are secured to the bottom of each corner for mobility and maneuverability the lifting structure.

Abstract: A cableless extendable and retractable support system for raising and lower a structure that includes a base, a structure to be raised and lowered relative to the base, a plurality of telescopic assemblies coupled between the base and structure to be raised and lowered, a plurality of spring elements having ends that are coupled between the plurality of telescopic assemblies and a lift tube assembly, the lift tube assembly including a mechanism which, when activated, selectively extends or retracts each of the plurality of spring elements therefrom and a housing which encloses the entire mechanism that extends and retracts the plurality of spring elements. According to one embodiment, the mechanism that extends and retracts the plurality of spring elements includes a drive screw and a driven screw and a pair of opposed push blocks which are mounded on the drive and driven screws, the first ends of each of the plurality of spring elements being coupled to the pair of push blocks.

Abstract: A vehicle lift has an electronic control which is functional to control the raising and lowering of the lift and to enable the display of a variety of information regarding the operation of the lift. The electronic control includes control logic which generates an operation fault indication signal based on the application of predetermined criteria to operation conditions, with concomitant display of data indicative of the operation fault indication signal accompanied by inhibiting or altering raising or lowering of the lift. The electronic control also includes maintenance control logic which generates a maintenance condition indication signal to enable generation of maintenance notice data. A vehicle service system includes a network placing controls of such vehicle lifts in communication with each other or a central computer processor.

Abstract: A concrete floor of a portable storage building is made for one or more storage units with each unit including a floor made through use of a single pair of mold sections or a plurality of pairs of mold sections interconnected for multiple storage units. Each mold section has a raised center and a circumferencial channel with concrete being poured onto the raised center and into the circumferencial channel. Removable exterior mold side walls complete the floor mold. A jack bracket is removably attachable to the floor corners and in turn is engageable with a hydraulic jack for raising and lowering the floor for loading onto the flatbed of a truck for transport to a remote site of use. A chain hoist connected to a top edge of a building wall panel is used to pivot the wall panel to a raised vertical position as the hoist moves on a rail to the vertical plane of the wall panel when raised.

Abstract: A lift for a travel trailer top is disclosed which includes novel corner posts or jacks each of which comprises a plurality of telescoping channel members for strength and rigidity and formed with integral marginal portions for receiving actuator push-pull elements.

Abstract: An automatic leveling system for a vehicle includes four leveling jacks coupled to a vehicle and extendible into contact with the ground to stabilize the vehicle. A level sensor calculates the location of a plane defined by the chassis of the vehicle, and downloads the information regarding the location of the plane to an onboard computer. The computer calculates the difference between the present location of the chassis plane and a plane which is level. The computer determines which of the leveling jacks need to be extended, and the proportion of extension required by each jack to activate the jacks in unison to level the vehicle. The computer further determines the proportions of flow that are needed to actuate the jacks in unison. To achieve the desired proportional flow, solenoid valves in a manifold coupling the jacks to a source of fluid are operated at varying frequencies.

Abstract: An improved hydraulic drive mechanism for a vertical conveyor. The conveyor comprises a pair of upright supports or columns and a carriage to support a load or cargo is guided for vertical movement on the columns. The drive mechanism includes a pair of first hydraulic cylinder units and a pair of second hydraulic cylinder units that preferably have twice the length of the first cylinder units. The first or shorter cylinder units are connected between a movable cross beam and the carriage, while the second cylinder units are connected between the movable beam and the upper end of the frame. At a lower level both the first and second cylinder units are in an extended condition, while at an upper level both cylinder units are retracted.

Abstract: A mobile vehicle jack and support is disclosed that may be positioned below a vehicle, raise the vehicle to a selected height, and securely support the vehicle at the selected height. The mobile jack and support includes a frame, a lift arm rotatably coupled to the frame at one end and having a vehicle engagement at an opposite end, and an support member rotatably coupled to the frame.

Abstract: A jack comprises a main frame device, an extensible rod device and two wheels. The main frame device has an upright pipe, a driving rod connected to the upright pipe, a reinforced plate connected to the driving rod and the upright pipe, an upper rod inserted in the upright pipe, and an upper block mounted on the upper rod. The extensible rod device has an outer pipe, a middle pipe inserted in the outer pipe, and an inner pipe inserted in the middle pipe. An inserted end of the driving rod is inserted in a lower end of the outer pipe. Two wheels are fastened on the upright pipe pivotally.

Abstract: The invention relates to a displacement device for the horizontal displacement of heavy loads, especially of derailed rail vehicles or the like, having a lifting cylinder and a preferably hydraulically driven displacement mechanism, which allows the position of the load raised by the lifting cylinder to be varied, the lifting cylinder (2) being borne by a slide (6) which is horizontally movable, preferably in two opposite directions, the slide being disposed displaceably on the surface of a support and the piston rod (11) of a displacement cylinder arrangement being fixedly connected to the support without the one end of the piston rod (11) being latch-locked to the support in a displacement-dependent manner.

Abstract: Apparatus for supporting and lifting a wheelless, vehicle-mounted camper cabin includes built-in jacks for safely, quickly and easily loading and unloading the camper cabin with respect to a transporting vehicle. The apparatus can be attached to the camper cabin and suspended therefrom when the camper cabin is mounted on a vehicle, and the apparatus can be used to secure the camper cabin on the transporting vehicle, while eliminating the need for tie-down chains, turnbuckles or other inconvenient means of securing the camper cabin to the transporting vehicle. The apparatus can include wheels for enabling the camper cabin to be moved about when the cabin has been removed from the vehicle and supported by the apparatus. The apparatus is also very stable to permit safe occupancy of the camper cabin when the cabin has been off-loaded from the vehicle and supported by the apparatus.

Abstract: For picking up and moving containers with corner castings on platforms, railway wagons or ships, two carriages are locked one to each end face of the container. These carriages have sets of wheels, which are vertically movable therein and allow displacement of the carriages in their longitudinal direction. With the wheels of each set at the same height, the carriages are in the lowest position and can be locked by locks in the corner castings of the container. By moving one wheel of each set of each carriage down, the carriage and, if locked thereto, the container are lifted for displacement. Such wheels can bridge gaps between loading surfaces and differences in height between such surfaces. The carriages may also have wheels with a horizontal axis transverse to the other wheels, to allow movement of the carriages with or without a container transversely to their longitudinal direction.

Abstract: A camper jack for mounting on a camper body, the jack having an extensible leg projectable from a hollow jack housing and attached to the camper body along the length of the housing. A piston cooperating in a cylinder in the extensible leg extends the leg from the housing. A hydraulic fluid reservoir is formed in the extensible leg in an annular space surrounding the cylinder. A valve block is coextensive with the extensible leg at the foot of the leg and contains the valves and pumping piston for the jack. Valving in the valve block permits manual extension and retraction of the extensible leg. Grooves are provided in a novel needle valve allowing control of the rate of flow of the hydraulic fluid. Pumping motion is controlled by a pump handle receiver.

Abstract: A jack for lifting a camper from the bed of a pick-up truck includes a ram with a foot which is normally disposed in a retracted position spaced above the ground to provide clearance during travel of the truck. After the foot has been lowered into contact with the ground, a hand crank is turned and rotates a ball screw which coacts with a ball nut to cause the ram to lift the camper from the truck. By releasing a latch, the retracted foot may be lowered quickly into contact with the ground without turning the crank and simply by stepping on and pushing downwardly against the foot to effect turning of the ball screw.

Abstract: In order to be able to handle containers of a height greater than the structural height of a rack and pinion jack in its retracted state, the top crosspiece of the rack and pinion jack is provided to be bent and provided with a double-acting engagement part. Thus, the top crosspiece can be brought into its top position with its engagement part engaging with the top corner metal fittings of a container of which the height exceeds that of the rack and pinion jack in a retracted state. By a simple 180.degree. rotation of the top crosspiece, its engagement part can be brought into engagement with the top corner metal fittings of another container, having a different structural height. In this manner, the rack and pinion jacks can be adapted to any height setting of the top crosspiece by 180.degree. rotation of the same to any two containers of different structural height.

Abstract: Apparatus for lifting and rendering mobile for movement about a floor, a stand upon which a plurality of slot machines are mounted, the stand having a front wall and a rear wall, and a top wall upon which the slot machines are mounted, the invention including wheel-equipped lifting assemblies that are removably mountable to the stand, and each lifting assembly comprising a horizontally extending cross-bar that spans the stand top and lies adjacent thereto, and a pair of wheeled upright members attachable to opposite ends of the cross-bar and lying adjacent the stand side walls, the upper part of each upright being adapted to slidably embrace the cross-bar to firmly hold it at about 90.degree. to the cross bar and to be adjustable therealong with a device to releasably clamp the cross-bar to the upright member.

Abstract: A hydraulic lift mechanism for raising and lowering heavy loads such as a camper shell above the cargo area of a truck includes a generally planar U-shaped lower base frame attachable to the truck and a substantially identical plan-view shape upper load support frame for attachment to the camper shell or other load. Two identical X-shaped scissors jack-like, lifting structures comprised of two crossbeam members pivotably joined to one another at their centers, and pivotably joined at their forward ends to vertically aligned positions in an upper and lower side frame member, are spread apart by a hydraulic powered cylinder pivotably fastened at one end to a side rail of the base frame and pivotably fastened at the other end to a crossarm, to raise the load support platform.

Abstract: A lifting system for a container includes four lifting columns each removably connected to one of four vertical corner edges of the container. Each lifting column is telescopable with the aid of power means driven by a power source via a control system. The lifting columns are in pairs forming two separate lifting aggregates placed at opposite sides of the container. Each lifting aggregate is connected in a closed loop circulation circuit including connecting piping from respective controls to the first lifting column, a first interconnection from the first lifting column to the second column and a second interconnection from the second lifting column back to the control. The first closed loop at one side of the container is completely separate from the second closed loop at the other side of the container and in effect synchronous, equal displacement of the lifting column for each separate lifting aggregate.

Abstract: Lifting and depositing devices for transportable large containers should be dismountable into individual parts of relatively low weight per part for simplification of their handling. So that this is also true of relatively long overhang arms of the rack and pinion jacks of such devices, each overhang arm is configured generally in the shape of a wrench having a narrow middle part and forked end parts, and is of generally flat construction, so that its greatest structural height corresponds only approximately to the structural height of the winch assembly. The overhang arms thus have a relatively narrow, lightweight middle portion and because of the flat construction following dismounting of the winch assembly and support legs they have the desired light weight per piece.

Abstract: A system used in a vehicle having a ground-engaging attitude to effect the displacement from a compartment in the vehicle of a power pack adapted for driving the vehicle. The system elevates the power pack from a vehicle driving position within the compartment toward another position disposed exteriorly of the compartment and maintains the power pack at the same attitude as the ground-engaging attitude of the vehicle upon the elevation of the power pack. The system senses attitude variations of the power pack upon its displacement, and is actuated in response to the attitude variation for controlling operation of the displacement and maintaining functions.

Abstract: A lifting jack for campers or similar structures. The jack includes a base with extensible tubes and a hand crank for raising and lowering one of the tubes to a desired height. The hand crank includes a handle which slips over a rotatable shaft and serves to rotate the shaft and raise or lower the tube. The handle also defines a hex bore for tightening the hex nuts associated with the jack mounting bracket.

Abstract: The invention relates to a lift assembly for handling a heavy goods container such as used in marine cargo and highway transportation. The lift assembly includes two right hand sub-assemblies and two left hand sub-assemblies, which, when connected together, form an open space frame adapted to receive the container. Quick release connectors are provided for hingedly connecting the sub-assemblies together. There are links, connected to the sub-assemblies and adapted to cooperate with the container, for supporting the container above the ground. The lift assembly includes lifters for raising and lowering each right hand and left hand sub-assembly, thereby raising and lowering the container as required. By differentially adjusting the lifters, the container may be moved (swayed) sideways and fore and aft to position or romove accurately the container on or off a transportation vehicle.

Abstract: The lifting and depositing device for a large container has four rack and pinion jacks attached to its corners at a low point by overhang beams. The racks are fastened to uprights, along which the rack and pinion jacks can be raised and lowered by suitable operation. In order to move the large containers with the lifting and depositing device, the bottom ends of the uprights are connected by wheel supports with wheels. The wheels are mounted on a wheel swiveling mechanism which has a support surface for the bottom end of the uprights. The wheel swiveling mechanism is rotatable relative to the uprights for controllability of the device. Each support surface for an upright is provided on a rocker mounted on the wheel swiveling mechanism for rotation about a substantially horizontal axis.

Abstract: A lifting device for lifting automobiles and similar loads wherein substantially equal loads are applied to both sides of the load and wherein an additional force is applied to the heavier side when the load is unevenly distributed. All power and compensating lines are connected over the load, leaving the area under the load free and available for auxiliary equipment.

Abstract: A support for use in conjunction with a camper (carriable by a conveying vehicle) and a plurality of conventional lifting jacks is constructed from square cross section ferrous tubing. The support is collapsible from an assembled state in which it supportively abuts the bottom of the camper when the camper is not carried by the vehicle. The support eases at least a significant portion of the load of the camper from the jacks, so as to avoid buckling of the camper sides by the jacks. Preferably, the jacks are maintained in position to stabilize the camper against transverse movement caused by wind or by movement inside the camper. The support is constructed from a pair of opposing end elements, each having a pair of vertical members connected by a horizontal cross member, and an upwardly opening socket on the upper ends of the vertical members.

Abstract: Apparatus for lifting a container of the standard type having connecting boxes at least at the lower ends of its vertical corners comprises at least four separate hydraulic lifting devices which are jointly connectible to a hydraulic pump. Each of the lifting devices includes a piston and cylinder releasably connectible to one of the four container corner end boxes to permit lifting of the container when the piston rod, serving as a supporting leg, is standing on the group. Each lifting device is connected to the container via an intermediate member of a connecting device which includes clamping mechanisms for releasably clamping the intermediate member to the lifting cylinder and to the lower container corner end box, and a lockable hinge mechanism permitting the intermediate member and thereby the lifting device to be pivoted through an angle of 180.degree. from an operative to a rest position and vice versa.

Abstract: A system for raising and lowering portable cargo containers that utilizes at least four jack attachment brackets, four screw jacks each having a support nut on their screw member, and means to raise and lower the screw jacks simultaneously. Each of the jack attachment brackets has a major vertical plate member and a minor vertical plate member that are connected together to form a right angular structure. There are elongated apertures adjacent to both of their bottom ends. Locking pins are inserted through the apertures into aligned holes that are located in fittings at the bottom corners of the portable cargo containers. A horizontal support plate extends outwardly from the top edge of the major vertical plate member at a ninety degree angle. A slot is formed in its outer most edge to allow passage therethrough of the screw of a screw jack. A nut on the screw would be captured by the horizontal support plate thereby lifting and lowering the jack attachment bracket as the screw jack is operated.

Abstract: Apparatus for converting a transfer truck to a flat bed or the like comprising a storage bin for aiding in removal of a truck module, such as a dump box, from a truck body, then storing the same until it is needed again. The apparatus includes upstanding side walls and a rear wall with a pair of ramps mounted to the rear wall and brackets at the front of the side walls. The ramps allow rollers on the dump box to roll up the ramp onto the top thereof and the brackets support the front of the dump box. the truck body can then be moved away from the dump box, after disengagement thereof, until it is desired to re-mount the dump box. Of course, other truck modules, such as water tanks, flat beds, etc. can be so mounted and de-mounted.

Abstract: For the handling of portable large containers, lifting and depositing devices are used, which have rack and pinion jacks to be attached to the corners of the containers by brackets. There rack and pinion jacks have tubular winch shanks which are approximately the height of the containers, into which are guided tubular uprights with the racks. Because of tolerance variations, the danger here arises of an impaired guidance of the uprights with the result of a poor operation of the gearing. To avoid this difficulty, a guide tube is connected with the bottom end of each tubular winch shank. Guide surfaces in the guide tube can be produced with great precision and at low cost. The housing of the winch gearing is configured integral with the guide tube. Thus, a small amount of side play can be left between the upright and winch shank without adversely affecting the rack and pinion gearing operation.

Abstract: A lifting and depositing device for portable containers comprising a plurality of rack and pinion jacks, some of which are mounted on support legs of the container. Each rack and pinion jack has an accessory gearing which can be pivoted outwardly or removed, so that when accessory gearing is pivoted outwardly, a support leg can be manually moved axially relative to its guide part, if the container, e.g., is offset on the loading surface of a truck. Thus, the gearing operation and time-consuming crank work required until now for two idle strokes per work cycle is avoided.

Abstract: A cargo container lift device comprised of a plurality of upright posts which define a bay into and out of which a transportation vehicle is driven. Vertical plates are slidably mounted on each of the posts and engage laterally extending supports which are movably connected to the cargo container. Hydraulic rams connecting the posts and plates permit the reciprocative movement of plates. Wheels mounted on the plates for common movement therewith counteracts the torque on the plates from the cargo container.

Abstract: A compactor particularly for junk vehicles, has a flatbed supporting a pair of opposed, hinged compaction doors. Each door has a linkage hydraulically operated to open and close the door for compaction of the vehicle against the flatbed. A winch disposed on the front of the compactor has its tow line extending beneath the doors and connects to the end of the vehicle opposite the flatbed to progressively advance the vehicle over the flatbed for compaction by the doors. A sequence control circuit is also provided which automatically opens and closes the compactor doors and automatically operates the winch to sequentially advance segments of the vehicle into the compactor. Additionally, the compactor can easily be made portable facilitating its transportation from one location to another.

Abstract: A crane is mounted on a platform having ground engaging legs adapted to support the platform in an elevated position straddling railroad tracks so that a railway car to be loaded or unloaded is adapted to be moved beneath the platform. The legs are adapted to be displaced between raised and lowered positions relative to the platform and are in the lowered positions thereof when the platform is so ground supported. When a railway car has been moved beneath the platform, the legs are displaced toward their raised positions whereby the platform is lowered onto the car to rest on the top edges of the side walls thereof. Preferably, the legs are also adapted to be displaced laterally between extended and retracted positions relative to the platform and are retracted when the platform rests on the car to minimize lateral projection of the apparatus relative to the car.

Abstract: A cabin having sections of different cross sectional areas is displaceably mountable on a van. The cabin is constituted by an integral wall of a synthetic resin material and an aluminum skin covers the wall in the transition zones between abutting cabin sections of different cross sectional areas. A support jack is mounted on the cabin section fitting over the driver's cab of the van and associated with each cabin side wall, the support jacks being transversely adjustably positionable into an operating position outwardly adjacent the vehicle side walls.

Abstract: A wheeled transporter attachable to a multi-ton cargo container for lifting nd lowering said container, and moving same overland. The transporter includes separate transporter units attachable to each end of the container for building a trailer unit. Each unit is structured to permit high wheel travel for improved operation over rough terrain.

Abstract: A bus suspension mating fixture assembly having a bus body overhead support assembly and a bus suspension shuttle assembly. The bus body overhead assembly comprises an elongated framework having a first pair of laterally spaced upright side beams connected together adjacent their tops by a transverse beam and a second pair of laterally spaced upright side beams connected together adjacent their tops by a transverse beam, and a pair of laterally spaced longitudinal beams that have their opposite ends connected to the upright side beams adjacent their tops. A pair of laterally spaced longitudinal overhead support rails are supported from the top of the bus body overhead support assembly and the overhead support rail unit can be raised and lowered throughout a predetermined range.

Abstract: A jack and tie-down system for the front end of a vehicle mounted box shaped cargo unit having a front wall and a transversely extended chamber means secured to the inner surface thereof. A pair of front jack assemblies each includes a horizontal support structure guidably mounted within the chamber means for movement from a storage position in the chamber means to an operating position projected outwardly from an associated end of the chamber means. A linearly extendible and retractible jack unit is releasably mounted at the outer end of each projected support member for adjustment into and out of ground engagement. When the cargo unit is to be transported the jack units are retracted and detached from their associated support members. Each jack unit is then received within a support member, and the resulting assembly stored in the chamber means within the transverse confines of the cargo unit.

Abstract: A leveling and support system for recreational vehicles uses fluid cylinders located at predetermined positions on the recreational vehicle, driven by a master cylinder through a valving control system. The piston of the master cylinder is actuated by a motor driven or hand crank driven screw mechanism, so that a recreational vehicle can be supported or leveled by a single drive unit with controls operated from a single control position.

Abstract: A detachable trailer for transporting heavy equipment and the like includes a forward tongue adapted for hitching to a towing vehicle and a support assembly for supporting the tongue on the ground at an elevation desired for hitching. The support assembly includes a screw type stand which is supported from a tongue-mounted bracket for pivotal movement between a lowered or support position wherein the stand base can be lowered into engagement with the ground and a raised or stowed position for over-the-road travel. A locking pin carried by the stand is releasably biased into engagement with angularly space apertures in the bracket to releasably retain the stand in the support and stowed positions.

Abstract: A stabilizing jack for helping to safely load and unload trailers. The jack consists of component parts which are easily assembled and disassembled. The jack comprises a base having an upwardly opening axially extending tubular socket, a head axially spaced above the base and having a downwardly opening axially extending tubular socket and an elongated axially extending tubular column having opposed end portions received in the sockets of the base and the head. Different lengths of column may be used with the same head and base depending on the particular usage to which the jack is placed. The base is provided with wheels and has a socket adapted to carry a long handle so as to tilt the jack back onto the wheels of the base for easy maneuverability. The head is provided with a pair of hand grips for assisting in the maneuverability of the jack under the trailer.

Abstract: Lifting and depositing equipment for cabins, shelters or the like that are movable on the loading surfaces of trucks or similar vehicles, comprising a plurality of jacks detachably fastened by trusses to the side walls of the cabin. A detachable, laterally displaceable roller system and a guidance system are mounted on the trusses for at least two of the jacks that are mutually oppositely disposed in the transverse direction, whereby upon a truck moving beneath the cabin, the roller systems glide off the upper rims of the upright side walls of the truck and support the cabin so as to maintain a space between it, the truck loading surface and the side walls. The guide systems cooperate jointly with the side walls to ensure simultaneously a lateral aligning of the cabin with respect to the loading surface and side walls to effect a central positioning of the cabin on the loading surface of the truck.

Abstract: A leveling and support system for recreational vehicle operates on water cylinders powered by a community water supply or a recreational vehicle water tank. A plurality of water cylinders are mounted to the recreational vehicle in pre-determined positions for leveling and supporting the vehicle. The cylinders are each connected through a branch valve to a main valve which in turn, is connected to a source of water under pressure. Each branch valve controls the operations of one water cylinder and the main valve supplied either water pressure or a suction through the branch valves to the water cylinders. The water cylinders have an operative position for supporting a vehicle and a stored position for travel with means for locking the cylinders in the stored position once the vehicle has been leveled.

Abstract: A device is described whereby one person can easily lift heavy objects such as truck camper covers, boats, mowers and the like, and whereby such objects can be retained effortlessly in the upraised position. The device comprises an adjustable load bearing means attached to a lever member, said lever member being pivotally mounted to the apex of an easily transportable supporting frame.

Abstract: A support for a trailer jack, having a vertically extending housing and an extendible plunger telescopically contained by the depending end of the jack housing, includes an upright member mounted on a flat base and having a socket for nesting the depending end of the jack plunger. Hanger arms, on the upper end of the upright member, stores the jack support in a travel position when not in use.

Abstract: To avoid instability, tilting or overturning of containerized freight or truck bodies during raising and lowering thereof, four double-acting lift cylinders are disposed at the four corners of a rectangular array, the cylinders comprising two pairs of cylinders, each pair of which comprises one cylinder which is connected in series to the respective cylinder at the diagonally opposite corner of the rectangular array of cylinders.

Abstract: A rack jack for hoisting, lowering and/or supporting containers, cabins, shelters, exchangeable superstructures or the like, with the corner fitting whereof pinlike engaging parts of two arms cooperate, the arms presenting respectively two supporting rods of different length, disposed at a distance from each other on the jack shaft and associated with the upper or lower corner fittings. The engaging part for the upper corner fitting is adjustable axially parallel to the axis of the jack and transversely to the jack axis, and the engaging part for the lower corner fitting is disposed perpendicularly with reference to the jack axis. The two rods of the arm that is associated with the lower corner fittings are articulatedly connected respectively with the jack shaft and the pinlike engaging part.

Abstract: A jack system for a vehicle mounted camper including a first pair of jacks secured to the lower front corners of the camper and a second pair of jacks secured to the rearward end of the camper. The front jacks are adapted to be lowered into ground engagement at times to support the front end of the camper while the rear jacks are adapted to be lowered to the ground to support the rearward end of the camper. The front jacks have their upper ends laterally adjustably secured to the camper so that the front jacks may be closely positioned adjacent the vehicle when in a travel position and so that they may be moved outwardly therefrom to a support position to enable the camper to be loaded on the vehicle or unloaded from the vehicle. The vehicle has a pair of brackets secured to its frame which are adapted to have the lower ends of the first pair of jacks connected thereto to tie down the camper to the vehicle when the jacks are not being used to support the camper.

Abstract: A manual controller for tripping or actuating switches used to energize j motors associated with a vehicle-raising or lowering mechanism, e.g a missile launch trailer or mobile home. The controller uses the "joy stick" principle, wherein the human operator moves an upstanding control rod or stick in any one of four directions to actuate selected ones of the switches. In fact the controller comprises two independently-movable joy sticks; one joy stick controls the "vehicle-raise" action, and the other joy stick controls the "vehicle-lower" action.

Abstract: A camper jack for mounting on a camper body, the jack having an extensible leg projectable from a hollow jack housing and attached to the camper body along the length of the housing. A piston cooperating in a cylinder in the extensible leg extends the leg from the housing. A hydraulic fluid reservoir is formed in the extensible leg in an annular space surrounding the cylinder. A valve block is coextensive with the extensible leg at the foot of the leg and contains the valves and pumping piston for the jack. Valving in the valve block permits manual extension and retraction of the extensible leg.