Abstract: The present invention relates to a hydraulic platform lift, in particular a motorcycle platform lift, comprising a parallelogram chassis in which on one of the two parallel lifting arms a hydraulic cylinder, supported on the sub-frame, is articulated. The task of the invention is providing such a platform lift which has a substantially better intrinsic weight/lifting-force ratio than the comparable platform lifts known from prior art.

Abstract: A simple system for mechanically lifting and securing a machine to vibration isolators. The system is unitary, compact, occupies space only under the machine and not protruding from the sides and allows the machine to be completely detached for servicing. The system includes a four bar linkage using two square supporting members as a chassie with the four bar linkage being mounted to vibration isolators that are welded to support plate. The four bar linkage is manipulated by two screws to easily and quickly raise the machine off its casters and restrain it in a fixed position. The two screws make detachment from the four bar linkage a simple and time efficient process for repairpersons.

Abstract: A motorcycle stand apparatus includes a base frame assembly which includes two longitudinal frame members and a transverse frame member connected between the two longitudinal frame members. A first leg assembly is provided, and a pair of first leg bottom pivots are connected between a bottom end of the first leg assembly and the two longitudinal frame members. A second leg assembly has a top end and a bottom end, and a pair of second leg bottom pivots are connected between the bottom end of the second leg assembly and the two longitudinal frame members. A lift platform has a first platform side and a second platform side. A pair of first leg top pivots are connected between the top end of the first leg assembly and the first platform side and the second platform side. A pair of second leg top pivots are connected between the top end of the second leg assembly and the first platform side and the second platform side. Pull cables are connected between a push plate assembly and the first leg assembly.

Abstract: A simple system for mechanically lifting and securing a copier/printer to vibration isolators aboard a Naval vessel. The system is compact, occupying space only under the copier/printer and not protruding from the sides and allows the copier/printer to completely detach for servicing. The system includes a four bar linkage using two square supporting members as the chassie with the four bar linkage being mounted to vibration isolators that are welded to the deck of the vessel. The four bar linkage is manipulated by two screws to easily and quickly raise the copier/printer off its casters and restrain it in a fixed position. The two screws make detachment from the four bar linkage a simple and time efficient process for repairpersons.

Abstract: A multi-purpose motorcycle lift includes a base, a lift assembly, and a lift bar. The left leg is pivotally connected to first end of the base, and the right leg is pivotally connected to the second end of the base, such that the left and right legs pivot freely with respect to the base. The front side of the left and right legs are pivotally connected to the front support, and the rear side of the left and right legs are pivotally connected to the rear support. The front and rear supports pivot in a parallel motion to the base. One end of the lift bar is fastened to the left leg and a stirrup protrudes from the other end such that a user may insert a shoe. The user operates the multi-purpose motorcycle lift by inserting a shoe into the stirrup and pushing downward until the left and right legs contact the base. A shot pin may be inserted through the pair of projections to insure that the multi-purpose motorcycle lift doesn't return to a retracted position.

Abstract: A lift platform sustained through a double system of support scissors in its lower part, which offers the mechanical upward and downward motion in a vertical plane and on a base frame, which in its turn is activated by a hydraulic mechanism. The lift platform is characterized because it also includes a hydraulic unit which operates electronically to automatically control the desired position in its upward or downward motion originated by the movement of the mobile arms of the scissors on a track in the horizontal plane.

Abstract: The present invention features an adjustable corner assembly for a boat-lift. The corner assembly of this invention may be designed to replace corner posts of other boat-lift mechanisms. It can also be designed as part of a boat-lift frame. In either capacity, it is very flexible in its adjustment, so that the lifting frame may be raised from the water without the need for adjusting and/or securing the posts below the water level. In one embodiment, the corner assembly has a footing that is placed to rest on the bottom of a body of water. One leg extends upwardly from the footing. A small plate is welded to otherwise secured inside the leg. The plate has a threaded hole in the center for receiving and rotatively securing a worm drive. The worm drive is rotatably placed through a cap affixed atop a sleeve. The sleeve slides upon the leg, as the worm drive is rotated.

Abstract: A transporter vehicle comprises two lifting devices which carry respective jacks and which can be joined at their ends by cross bars to form a rectangular dolly with a central opening therein. The lifting devices each have front and rear wheels so that the dolly can be rolled on floor surfaces. In practice, the two are placed on opposite sides of a load seated on a floor in the opening between those devices, the jacks are placed under the load, the cross bars are assembled with the side frames, the load is jacked up on its opposite sides to be above the floor and the load may then be transported.

Abstract: The present invention is an apparatus that can be operated by one person to move an article such as a pool table, vending machine, and the like, from place to place over a floor surface. The apparatus is made of a planar base and planar platform with a structure for slidably moving the apparatus across the floor. The apparatus includes a mechanism for pivotally connecting the base and platform attached at opposing sides of the apparatus. The pivotal connecting mechanism is operable to raise and lower the platform relative the base to selectively move the apparatus between a retracted position and an elevated position. The invention further provides a method of moving an article using the apparatus. In use, an operator positions the apparatus in the retracted position underneath the article and pushes downward on the handle of the movement actuating structure to elevate the platform which then contacts the article and raises it off the floor.

Abstract: A portable surface lift for a vehicle and a pair of manually retractable wheels respectively attached to a mid-portion of opposite sides of the lift for rolling the lift over a garage floor surface when the vehicle is not lifted on the lift. The lift has fixed pads for contact with the undercarriage of the vehicle, and a hydraulic cylinder raises and lowers the vehicle on the lift. Arms are pivotally attached to opposite sides of the lift with a wheel at the end thereof for manual movement between a wheel-retracted position and a wheel-extended position. The wheels remain in the extended position by an over-center pivoting design. Two towing mechanisms are provided for moving the lift: a towing bar that can be attached to a towing bracket on an end of the lift, or a wheeled towing dolly having a clevis and securing pin for attachment to the towing bracket. The lift has a safety locking mechanism for securing the lift in various raised positions.

Abstract: An apparatus adapted for attachment to the frame of a truck, usually within a bed of a conventional pickup truck. A generally planar base is rigidly attached to the truck frame with bolts. A platform is rotatably connected to the base with a pair of four-bar linkages, one on the right side of the platform and one on the left. The platform has a low position close to the base, and a high position that is typically 15 or 20 inches higher. A double-acting hydraulic cylinder is anchored at one end to the base and connected at its other end to the platform. Pressurizing the cylinder one way causes the platform to be raised and translated backwardly with respect to the base. Pressurizing the cylinder the other way causes the platform to be moved toward the base in a relatively slow and deliberate manner.

Abstract: A vehicle jack is disclosed having a base and a lifting platform which is connected to the base by pivotally connecting legs. The lifting platform has a pair of spaced-apart side members and a cross beam member extending between and connected to the side members. A hydraulic jack component is mounted to the base and has a lifting member pivotally connected to the lifting platform by a link which is pivotally connected to the cross beam member of the platform. The platform is disposed for movement between a low profile state and an elevated protracted state. A motorcycle is intended to be positioned over the platform when in its low profile state and is raised by movement of the platform to its elevated protracted state upon activation of the hydraulic jack component.

Abstract: Upwardly extending pivoting booms are supported on a rectangular base which is submerged in water. Watercraft supports on mounting arms are connected to the pivoting booms. A double-acting hydraulic cylinder attached between the rectangular base and pivoting booms swings the pivoting booms upwardly until they are braced by boom supports on the rectangular base at an angle over center. This raising of the pivoting booms lifts the mounting arms and watercraft supports to remove a craft from the water and disposes the booms, mounting arms, and craft in a stable, secure over center configuration. Actuation of the double-acting hydraulic cylinder in the opposite direction forces the booms back out of the over center position and lowers the craft into the water.

Abstract: A lift truck for carrying stacking chairs, the truck having a main frame carried on front and rear wheels and an elevating platform on the main frame and movable from a lowered inactive position to a stack lifting position. The forward end of the truck, which includes the main frame, front wheels and elevating platform, is of a width to allow the forward end to be pushed between the transverse spaced legs of the lowermost chair in the stack when the elevating platform is in the inactive position. The truck has rear wheel mounting structures which include arm sections which project forwardly of the rear of the lift truck and are disposed laterally outwardly from the sides of the main frame so as to position the rear wheels laterally outward from the main frame and forward of the rear of the main frame. The space between the arm section of the rear wheel mounting structure is open at the front thereof so as to receive the legs of a rear stack of chairs as the forward portion is pushed under the stack.

Abstract: Prior hydraulic lifts for bathtubs have required complicated installation and a dedicated source of hydraulic pressure. The present invention provides a bathtub lift operated by the domestic water pressure and which uses simple hydraulic cylinders.

Abstract: The invention provides an elevating apparatus for raising and lowering a work station holding personnel, equipment, and/or materials between a downward declining, compact retracted position and an upwardly inclining extended limit position. The work station is connected to a mobile support base by parallelogram first and second boom assemblies which are operatively interconnected by a boom assembly coupler and rigid compression link. Thus, raising or lowering the first boom assembly by hydraulic lift means causes the second boom assembly to move correspondingly such that the work station moves vertically, unaccompanied by any substantial horizontal motion, and is maintained in a level attitude throughout the range of motion of the apparatus.

Abstract: Mechanical handling apparatus includes a surface and a driving mechanism for moving a load over the surface which comprises a substantially vertically reciprocable platform device for actuating the load, and a lever device including at least two oppositely pivoted levers for raising and lowering the platform device. Preferably, the apparatus comprises a platform for carrying loads, a mechanism for raising and lowering the platform, the mechanism including at least two levers each pivoted relative to the platform and each pivoted relative to a respective one of a pair of actuating members, the actuating members being movable towards and away from each other, whereby relative movement of the actuating members in one direction pivots the levers to raise the platform and relative movement of the actuating members in the opposite direction pivots the levers to lower the platform.

Abstract: Method and apparatus for loading and unloading a bulk curing tobacco barn so that large heavy containers filled with tobacco leaves will be properly positioned in the barn in a close front-to-back relationship.

Abstract: A device for raising and lowering sheets of building material utilizes a base support platform on which is attached a support bracket member and a pair of serially connected first and second parallelogram members pivotally joined by a right angle member with the other end of first parallelogram member pivotally connected to the base support platform and the other end of second parallelogram member pivotally connected to an object supporting platform. A spacer arm is pivotally connected to the support bracket and to one leg of the second parallelogram member proximately midway between pivotally connected ends to keep the object supporting platform on a long radius curve or generally straight vertical direction of movement. Hydraulic means are provided for actuating the spacer arm to raise and lower the object supporting platform.

Abstract: A mobile chair lift for raising wheelchairs from ground level to a level such as to enable rolling the wheelchair onto a porch or other flat surface providing for entrance to a home or place of business wherein there is a base frame, a platform, legs mounting the platform on the base frame, kinematic linkage for raising and lowering the platform and maintaining it horizontal during such movement, a reversible motor for actuating the linkage and switches mounted on the platform and on the base frame for controlling operation of the motor. The platform has downwardly-open channels at its opposite longitudinal sides for receiving the legs at ground level and there is a ramp transversely of the forward end of the platform for raising the wheels from the ground onto the platform.

Abstract: A braking and stabilizing system for a boat in a water channel, including boat lifting apparatus in the water channel engageable with the bottom of the boat, and including inflatable bags connected to the boat lifting apparatus for moving same upwardly to lift the boat while stabilizing same.

Abstract: A dolly apparatus for facilitating handling of heavy objects and comprising wheel mounted main support frame means and secondary frame means carried thereby, said secondary frame means being movable between a raised and a lowered position. In the lowered position of the secondary frame, the dolly apparatus may be easily rolled beneath the object to be maneuvered, whereupon the secondary frame means may be elevated for lifting the object in order to move the object simultaneously with the wheeled dolly apparatus. The main support frame structure is of a width slightly less than the inboard dimension of the support wheels, and the secondary frame means is of an overall width slightly greater than the outboard dimension of the wheels. The secondary frame is so constructed as to be lowered to a position overlaying a portion of the wheels whereby the supporting portion of the dolly apparatus is of a maximum width without unduly increasing the overall width of the entire dolly apparatus.

Abstract: A container transport trailer is provided having a bottomless U-shaped support frame including a cross member and a pair of side members. A lift member is connected to the forward end of the trailer and cooperates with a pair of support arms pivotally connected to the rear ends of the side members of the U-shaped frame to engage against the rear portion of the article. The trailer is suspended above the surface within the U-shaped frame on the lift member and the support arms for travel and is lowered to the ground by the lift member for release.