Abstract: A lift mechanism is provided with a lower bracket to be attached to a base, a lower support arm and a lower drive arm each pivoted at one end thereof to the lower bracket, an intermediate bracket for pivotally supporting free ends of the two arms at respective positions at equal distances from the pivoted positions of the arms on the lower bracket with the arms in parallel to each other, a lift control apparatus disposed on the intermediate bracket and having a movable member retractably projectable in a direction parallel to the base, an upper support arm and an upper drive arm pivoted each at one end thereof to the intermediate bracket at respective positions symmetric with the pivoted positions of the lower support and drive arms with respect to the lift control apparatus, an upper bracket for pivotally supporting the other ends of the upper support arm and the upper drive arm, and a pair of traction members attached each at one end thereof to an outer end of the movable member of the lift control apparatu

Abstract: A rotary support device comprising an under ring including a horizontal portion and a peripheral wall, the wall projecting upward from the inner periphery of the horizontal portion and being inclined either outward or inward, the wall being formed with a guide groove in a peripheral surface thereof, and an upper ring including a horizontal portion and a peripheral wall, the upper ring wall projecting downward from the inner periphery of the horizontal portion and being inclined along the inclined under ring wall, the upper ring wall being formed with a guide groove in a peripheral surface thereof. The two rings are fitted to each other with a row of balls rollably fitted in their respective guide grooves. The grooved wall portion of each ring has a side edge partially covering the balls from above or below in engagement therewith. The two rings are engaged with each other inseparably and rotatably by the balls.

Abstract: A tiltable table having a top plate tiltably mounted on a frame. The tiltable table comprises an air spring disposed between the frame and the top plate and having a cylinder pivoted at its one end to the frame, a piston rod pivoted at its outer end to the rear side of the top plate and a release pin projecting from the piston rod outer end, the piston rod being holdable as projected by a desired length by the air spring; a pushing plate movable toward and away from the release pin of the air spring; a lever pivoted to the top plate at the free end thereof; and release structure attached at its one end to the base end of the lever and at the other end thereof to the pushing plate for pressing the pushing plate into contact with the release pin of the air spring when the lever is pivotally moved to thereby release the piston rod from the holding action of the air spring.

Abstract: A carrier comprising a lift bar provided on the body of the carrier and movable upward and downward, a connecting member pivotably connected between an upwardly driving cylinder device and the lift bar, an upper claw provided on the connecting member, and a lower claw provided on the lift bar and cooperative with the upper claw for holding the upper rim of a container. The load of the container acting on the lower claw pulls down the upper claw for the two claws to clamp the container upper rim to transport the container as lifted.

Abstract: A device for clamping container comprises a support frame positionable around the container over approximately one half of the circumference thereof, a pair of substantially horizontal support rods provided on the inner side of the frame in the vicinity of respective opposite ends thereof, and a pair of claw plates mounted on the respective support rods upwardly and downwardly rotatable. The support rods extend away from each other in a horizontal plane toward their front ends. The claw plates have inwardly curved edges opposed to each other for the body of the container to partly fit in and each have an upper surface positioned at a higher level than the support rod. The shortest distance between the claw plates through the center of the container corresponds to the diameter of the container body, and the distance between the front ends of the claw plates is smaller than the diameter.

Abstract: A carrier for a cylindrical container possesses function of raising the container from a fallen position to an upright position. The carrier comprises a movable dolly, a lift drive assembly mounted on the dolly, a lift frame provided on the dolly, a clamp assembly provided on the lift frame, a pair of arms extending from the lift frame and spaced apart by a distance smaller than the lateral width of the cylindrical container to be lifted, the arms being movable between a horizontal position and an upright position each in a vertical plane along the direction of advance of the carrier, and one-way brake means for preventing the dolly from retraction but permitting the advance of the dolly when the container is raised to an upright position and lifted or lowered.

Abstract: An apparatus for generating high hydraulic pressure with reduced pulsations, comprising a valve case attached to a motor main body and having a plurality of pneumatic cylinder units arranged therearound, a rotary valve rotatably fitted in the valve case, links each having one end pivoted to the piston of each pneumatic cylinder unit and the other end connected to an eccentric shaft portion provided on a crank shaft or the rotary valve, and hydraulic bases connected directly to the pneumatic cylinder units individually, the hydraulic pressure fluid being caused to flow-out from the hydraulic bases in succession by the rotation of the rotary valve, in such a manner that when the outflow of the fluid from one of the hydraulic bases is about to cease, the fluid starts to flow out from another hydraulic base, and when the flows of hydraulic fluid from the two hydraulic bases combine, the pulsation of the flow from one base is offset by that of the other single flow, making it possible for the hydraulic fluid to un

Abstract: A fluid motor for converting reciprocation of a piston within a cylinder to rotation by a crankshaft includes a valve for supplying a fluid to the cylinder and discharging the fluid therefrom. The valve comprises a rotary valve member rotatable with the crankshaft and a fixed valve body slidably in contact with the rotary valve member. When the motor stops, at least one-half portion of a fluid intake groove formed in the rotary valve member is positioned at one side, toward a direction opposite to the direction of rotation of the rotary valve member, of a position opposed to a cylinder connection port formed in the fixed valve body so that a sufficient amount of pressure fluid can be supplied to the cylinder at the start when the motor is initiated into operation again.

Abstract: An apparatus for rotating a pallet comprising an annular under ring supporting bearings rotatable in a horizontal plane and bearings rotatable in a vertical plane, and an upper ring provided over the under ring and supported by the vertical bearings. The upper ring is prevented from deflecting laterally by the contact of a peripheral wall on the upper ring with the horizontal bearings.