Abstract: A new container moving vehicle for lifting and moving dumpsters and other similar types of rubbish containers. The inventive device includes a front vehicle portion which is similar to conventional pick-up truck type of vehicles, including a drivers cab, an engine for powering the vehicle, and front wheels. A U-shaped frame is rigidly attached to the rear of the front portion and extends rearwardly therefrom. The frame includes a base end which is secured to the rear of the front portion, and a pair of spaced arms extending from the base end. Each of the arms includes its own wheel assembly for supporting the arms upon the ground, and there is no connection between the wheel assemblies or the arms, such that the U-shape is substantially unobstructed. A U-shaped lift apparatus, having a base end and a pair of spaced arms which are parallel to the arms of the frame, is mounted on the U-shaped frame and is raised or lowered in a vertical direction relative thereto for raising and lowering the container.

Abstract: A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the reference or ground surface, thereby maintaining the horizontal position of the attachment without any motion for controlling the bucket cylinder while lifting up the attachment from the initial position to the uppermost position by the arm-up motion during the operations of construction equipment. The attachment self leveling linkage has a simplified construction, thereby being easily produced and installed at a lower cost and lightening the weight of the working unit. The linkage thus improves the operational efficiency of the working unit.

Abstract: A three-axis machine control structure includes a support structure and a machine component to which a workpiece or tool can be attached. Three control arms are connected between the machine component and the support structure. Preferably, each control arm is pivotably connected to the support structure and to the machine component and includes a pair of four-bar linkages connected in series. The control arms are oriented to permit rapid movement of the machine component along any or all of the three linear axes, while restricting movement of the machine component along the rotational axes.

Abstract: A platform-type wheelchair lift for mounting in the stairwell of a vehicle, such as a bus or train. The wheelchair lift includes a platform frame that is movable from a retracted position in which it is stowed underneath the vehicle to an extended position in which it extends out from the side or back of the vehicle. A wheelchair platform is movably coupled to the platform frame by a parallelogram linkage that allows the wheelchair platform to move between a lowered and a raised position. The wheelchair platform includes foldable outer and inner wheelchair barriers that prevent a wheelchair from moving off of the wheelchair platform during operation of the wheelchair lift. The wheelchair platform also includes a mechanical platform interlock mechanism. The platform interlock mechanism is moveable between an unlocked and a locked position. The platform interlock mechanism is in an unlocked position when no weight is placed on the wheelchair platform.

Abstract: A loading carriage for transport of an object in a partially raised position, and particularly for use in a mechanical parking garage. The loading carriage includes a lifting frame movably linked to a traveling frame by lifting elements. The traveling frame has running wheels and the lifting frame is provided with mechanical grippers which are switched between an open and a closed position. The loading carriage grips the object and raises the lifting frame by a single actuating mechanism. A limit stop is installed on the lifting frame to ensure that the lifting frame is raised only after the grippers are completely closed.

Abstract: A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the reference or ground surface, thereby maintaining the horizontal position of the attachment without any motion for controlling the bucket cylinder while lifting up the attachment from the Initial position to the uppermost position by the arm-up motion during the operations of construction equipment. The attachment self leveling linkage has a simplified construction, thereby being easily produced and installed at a lower cost and lightening the weight of the working unit. The linkage thus improves the operational efficiency of the working unit.

Abstract: A mechanical control structure is used with a machine, such as a machine tool. The control structure includes a base and a tool support member connected by a linkage assembly having three linkages arranged in a triangular pattern. The linkages cooperate to prevent rotational movement of the tool support member relative to the base along any of the three rotational axes. Three linear actuators are also connected between the base and the tool support member to move the tool support member relative to the base along a predetermined path.

Abstract: An implement for use in simultaneously transporting multiple rolled forage bales which includes a frame having upper and lower portions with a first vertically movable bale engaging element mounted adjacent the upper portion of the frame and a lower bale engaging element mounted to the lower portion of the frame. The lower bale engaging element may be selectively removed from the frame to allow unrestricted elevating and loading or stacking of bales.

Abstract: An apparatus for gripping and weight-dependent clamping of workpieces, bar guides and the like that are to be held or moved relative to a location, particularly in connection with a hand-guided handling device that has a control switch. The apparatus includes a carrying frame to which are linked upper hinge-bolt pairs for respective superimposed pairs of parallel rods, which are detachably attached by pairs of lower hinge-bolts to a connection piece for gripping elements. A pair of struts, each of which is linked to one lower hinge-bolt, is jointly attached in articulated fashion to a control bolt centrally adjustable between the rods in a guide slot on the carrying frame.

Abstract: A three-axis machine is disclosed. The machine includes a machine component to which a workpiece or tool can be attached. An actuator, such as three powered extensible legs, is connected between the machine component and a support structure. Three control arms also are connected between the machine component and the support structure. Preferably, each control arm is pivotably connected to the support structure and the machine component and includes a pair of four-bar linkages connected in series. The control arms are oriented to permit rapid movement of the machine component along any or all of the three linear axes, while restricting rotational movement of the machine component along the rotational axes.

Abstract: An apparatus for cutting workpieces (36) moving along a path relative to the apparatus, including a guide arm (20), a tool mount (24), and two rotation mechanisms (28), (30), is provided. The guide arm (20) includes mounted links (40), (46), and at least two intermediate links (42), (44), pivotably connected end-to-end to each other to define a multiple bar linkage arrangement. The tool mount (24) is attached to the guide arm (20) at a connection of two of the intermediate links. The rotation mechanisms (28), (30) are in communication with the links (40), (46), for pivoting the links (40), (46) to cause movement of the intermediate links (42), (44), further causing the desired movement of the tool mount (24) in the path of the moving workpiece (36). Additional components include a second guide arm (22) positioned on the opposite side of the workpiece (36). The tool mount (24) is elongated to hold multiple nozzles (58) and is pivotably connected between the two guide arms (20), (22).

Abstract: This is a top-lifting rotary loader and system for cargo containers and is especially suited for loading and unloading double-stacking container well cars and single level railway cars, semitrailers, etc. This loader has a vertical pivot post about which turns a parallelogram linkage connecting a mast vertically supported on one or more wheels to revolve about the post and a second parallelogram linkage extending from the mast out to support a depending parallelepiped linkage frame pivotally supporting a loadspreader having depending aligning columns adjustable to align transversely both a railway and a highway vehicle, and cylinder or cam track means for lifting or lowering the the second parallelogram linkage arms to transfer a load. The loader can be automated to various degrees with cam tracks.

Abstract: A trajectory guidance apparatus can guide motion with passive actuators with at least two degrees of freedom. The trajectory guidance apparatus has a linkage that is mounted to a reference and an interaction part that is to be manipulated by a master, such as a human, gravity g, water flow, a spring, or other force generator. The linkage has at least two force elements adapted to move the interaction part so that the interaction part is guided and can be moved along a prescribed path at a prescribed velocity relative to the reference. A controllable passive coupling connects the force elements and is adapted to impart passive forces against each force element of the linkage. The passive forces are derived substantially solely from a quantity of energy that is imparted to the interaction part by the master, not from other sources.

Abstract: A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the reference or ground surface, thereby maintaining the horizontal position of the attachment without any motion for controlling the bucket cylinder while lifting up the attachment from the initial position to the uppermost position by the arm-up motion during the operations of construction equipment. The attachment self leveling linkage has a simplified construction, thereby being easily produced and installed at a lower cost and lightening the weight of the working unit. The linkage thus improves the operational efficiency of the working unit.

Abstract: A system for feeding and slitting short length, long width sheets and particularly suitable for solid fiberboard materials, includes a dual acting rake-type sheet feeder, a sheet decurling apparatus, and a multi-head slitter, all of which are interconnected to maintain positive sheet control through the entire system with resultant highly accurate short width slit sheet portions.

Abstract: A tilt linkage mechanism for controlling the pitch of an implement used with load elevating vehicles which includes an actuation cylinder which is mounted intermediate to the length of the implement lift arms and which is utilized to control the rotation of at least one pivot shaft connected to the vehicle lift arms so as to be in parallel relationship between a first pivot axis where the lift arms are connected to the vehicle and a second pivot axis where the lift arms are pivotally connected relative to the implement. At least one parallel linkage assembly is connected to the at least one pivot shaft and to pivot points spaced on either side of the second pivot axis and stabilizer elements are provided for allowing rotation of the actuation cylinder during use for adjusting the pitch of the implement.

Abstract: Disclosed is an improved two-dimensional manipulating robot whose arm assemblies are light enough to permit its manipulating hands to move to a desired position quickly with precision. A two-dimensional manipulating robot comprising a base stand, an upper arm pivotally fixed to said base stand at its rear end, a first drive means associated with said upper arm, a forearm pivotally connected to said upper arm at its rear end and having a manipulating hand at its fore-end, a second drive means associated with said forearm, a control for controlling the angular rotation each of said upper arm and said forearm for bringing said manipulating hand to a desired position, is improved according to the present invention in that said second drive means is fixed to said base stand, and that said robot further comprises rotation transmission means to transmit the rotation of said second drive means to said forearm, thereby permitting it to rotate about the fore-end of said upper arm.

Abstract: A trailer comprising a wheeled frame including a main deck and an upper deck positioned thereon. The rearward end of the upper deck is pivotally interconnected to the forward end of the main deck by multiple arms which maintain the upper deck in a substantially horizontal position while the main deck is being pivoted with respect to the upper deck. A suspension system is slidably mounted on the wheeled frame and is slidably movable from a transport position to a tilt position forwardly therefrom to enable the main deck to be pivoted so that the rearward end of the main deck may be moved into ground engagement to enable equipment or the like to be mounted on the trailer.

Abstract: This invention relates to hydraulic lift apparatus in general and to a hydraulically operated vehicular tailgate lift apparatus in particular.

Abstract: A lifting apparatus preferably for applications in which a floor covering is to be removed and/or installed, has a lever arm and support that provide portions of two interconnected linkages. An interchangeable bracket is raised and lowered by the lifting apparatus. The bracket is provided with single-sided and double-sided portions that insert into a partition member to raise the partition when the bracket is raised by the lifting apparatus. A rachet arm is provided by a spring-biased stop member and a serrated portion. The rachet allows the lifting assembly to support the weight of the partition without constant attention, thereby allowing the workers to perform either the removal or installation of a floor covering without an inordinate amount of partition movement.

Abstract: The invention relates to an industrial robot with two lower robot arms directed upwards from a fixed robot stand, the robot arms at their lower end being pivotably journalled in the stand around horizontal axes and at their upper end being pivotably interconnected by a yoke in such a way that a four-bar linkage is formed. The linkage is provided with a first driving unit. An upper robot arm is journalled around a fifth axis in a fixing member which is supported by the yoke and which is rotatably journalled around a sixth axis. The upper robot arm and its fixing member are provided with a second and a third driving unit, respectively.

Abstract: A device for hooking, lifting and dumping a dustbin, of the type for use on a truck having sidewise loading. The device has two arms that are pivotally connected to each other and a third arm (16) provided with a catch for hooking the dustbin and hinged to the one of the arms. A lever is secured to the one arm and a plunger is provided that is hinged, on one side, to the lever and, on the other side, to the other arm at a pivot point so as to achieve, together with the other arm and the lever, a four-bar linkage. The plunger consist of an extensible arm so as to cause the four-bar linkage to assume two different configurations, one during progressing towards a dustbin, the other during lifting and rotating thereof.

Abstract: A passenger lift (10) is provided for loading a passenger (12) into and out of an aircraft (14). Lift (10) includes a chassis (38) having a front (34) end and a back (36) end. A plurality of wheels (62 and 63) are attached to the chassis (38) providing devices for moving the lift (10). The lift (10) also includes an electrical energy source (70) for providing electrical energy, and an energy converter (104) for translating the electrical energy from the electrical energy source (70) to mechanical energy. The lift (10) includes a rear support (40) generally perpendicular to the chassis (38) and attached to the back end of the chassis (38). The lift (10) has a basket (48) for holding the passenger (12) while the passenger is raised and lowered with the lift (10) and (48) is located at the front end of the chassis (38). The lift (10) includes a pair of lift arms (44) for lifting the basket (48), and a pair of stabilizing arms (42) for providing stability to the basket (48).

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: Load transferring apparatus comprises a base member, a planar platform for supporting a load and a drive arm pivotally mounted on the base member for moving the platform in plane between a retracted position at which the platform assumes a first orientation and an extended position at which the platform assumes a second angularly transposed orientation while remaining substantially in the plane occupied when in the retracted position. The drive arm is fixed to a drive arm shaft which, in turn, is rotatably mounted on the base member. A constraining link extends between the base member and the platform and is generally parallel to the drive arm. An elevator drive is operable for moving the base member raised and lowered positions and a coupling drivingly connects the drive arm shaft to the drive shaft throughout a range of positions between the raised position and the lowered position. The base plate includes an upstanding stop plate.

Abstract: An elevator mechanism is disposed in the rear portion for rotating the rear panel of the vehicle and includes two pairs of links pivotally coupled in parallel between two couplers and a support of the vehicle so as to stably support the coupler. An actuator is coupled between the support and the coupler for moving the coupler upward and downward. A panel is pivotally coupled to the upper portion of the coupler and an actuator is coupled between the bottom of the panel and the middle portion of the coupler for rotating the panel about the upper portion of the coupler.

Abstract: An articulated robot comprises a parallelogrammic linkage comprising a fixed base (1) having a horizontal upper surface, a first arm (2) pivotally supported for turning about an axis perpendicular to the upper surface of the fixed base (1), a first auxiliary link (3) parallel to the first arm (2), and a second auxiliary link (4) pivotally joined to the respective extremities of the first arm (2) and the first auxiliary link (3); and a second arm (5) supported on the second auxiliary link (4) for turning about an axis parallel to the axis perpendicular to the upper surface of the fixed base (1). The motion of the second arm (5) is not restricted by the first arm (2), and the articulated robot is capable of moving a work between two separate points at a high speed.

Abstract: A work machine includes a boom which is pivotally connected at one end to the machine and is provided at the other end with a tool carriage which is attached to the boom at a pivot which is fixed with respect to the boom. The tool carriage is associated with a mechanism for maintaining it at a constant attitude when the boom is raised and lowered. The boom further includes an extension for improving the versatility of the machine.

Abstract: A device for tilting, carrying and transporting a grand piano (2) comprises a wheeled frame (3, 4) designed to run underneath the grand piano. Elements for gripping (5), lifting (14) and tilting (17) the grand piano are fitted on the frame. The gripping elements (5) are made U-shaped to grip at least the bottom face (6), an adjacent end (7) face and the top face (8) of the grand piano. The gripping elements (5) are provided with wheels (11) and are detachably connected to the lifting and tilting devices. After lifting and then turning the piano through 90.degree. and the like, the piano can be moved independently with the gripping elements by detaching the lifting and tilting devices. The gripping elements can form part of a case for protecting against damage during further transportation.

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. The jacks may include linkages which cause the load to be lifted wholly vertically while not undergoing any horizontal translational movement.

Abstract: A wheelchair lift with hydraulic power unit and automated folding platform for installation on the floor, inside the opening defining walls of a vehicle to provide for loading and unloading of wheelchair occupants to and from the vehicle. Completely automated, retractable, collapsable folding platform. Hydraulic power unit (10) of the lift and the hydraulic cylinder (28) are totally enclosed, and contained in the power box. The power unit provides power for upward motion of the platform. The platform is pivotally retracted and held in a vertical position in half of the opening space of the vehicle door. The folding motion is accomplished by a folding arm driven against a cam roller which starts the motion of the ball joint linkages inside the platform tubing structure.

Abstract: An industrial articulated robot that can be inclined in forward and backward directions has a parallel link mechanism that includes a lower arm and a connecting link in parallel to the arm. Bottom ends of the lower arm and connecting link are supported at a lower base. An upper base connects upper ends of the lower arm and connecting link so that they can be rotated. A turning section that rotates horizontally is provided above the upper base. An upper arm that can be inclined in upper and lower directions is supported at a position shifted relative to a turning axis of the turning section so that the upper arm and the lower arm do not interfere with each other in operation.

Abstract: In an article transporting system, a first linear moving arm and a second linear moving arm are juxtaposed to each other so as to be moved linearly while keeping a parallel positional relationship with each other. First end portions of the linear moving arms are coupled to an article transporting unit through first and second links. A linear drive mechanism is provided for linearly moving the article transporting unit in a direction perpendicular to the moving direction of the linear moving arms by the linear movement of the first and second linear moving arms. The first and second linear moving arms are synchronously linearly moved in opposite directions to each other. In this case, to avoid an unstable posture of the article transporting unit during the movement, a posture maintaining device is provided between one of the first and second linear moving arms and the article transporting unit.

Abstract: A vehicle lift, as for wheelchairs, incorporates a horizontally disposed load platform pivotally affixed to a laterally spaced-apart parallelogram elevating frame which is in turn pivotally affixed to a carriage, allowing a composite travelling assembly (platform, elevating frame and carriage) to be stowed in a mounting enclosure. A hydraulic ram actuates the parallelogram elevating frame mechanisms to position the platform at different terminal positions. At the stowing level, a pair of laterally spaced-apart rack-and-pinion mechanisms actuate the aligned platform, elevating frame and carriage inboard, on laterally opposed guide rails to be stowed in a mounting enclosure. A roll stop mechanism is affixed to the outboard end of the platform and is automatically actuated to move from a ramp position at ground level to a vertical safety stop position when the platform is elevated.

Abstract: A skid steer loader having a frame, ground support wheels extending from the frame, a cab with load bearing side walls extending upwardly from the frame to define an operators control area therebetween, and a boom structure comprising a pair of arms and a linkage assembly for operatively coupling the arms to the load bearing side walls. Each arm includes a front portion having a front end extending beyond the cab to support a bucket, a rear portion extending behind the cab, and an integral intermediate portion between the front and rear portions. The linkage assembly includes upper and lower links associated with each of the arms, each link being pivotally secured to the cab at a location above the wheels. The boom structure is powered for raising and lowering in concert each of the pairs of arms through a generally vertical path for moving the front end of the boom arms and bucket along a lift path.

Abstract: A pivoting linkage mechanism provides a linear translational path for a tool holder over a predetermined displacement distance. A single linear motor drives the tool carrying end of the mechanism within a displacement plane defined by collective rotation of two sets of parallel, four-bar linkages joined by a transfer plate. A control link between a frame secured axis and an axis mid-span of a swinging linkage set further restricts pivotal displacement of the entire assembly. The translating tool holder supports a journal socket for the pivot axis of a third four-bar, parallel linkage for controllably swinging a secured article in a horizontal plane between opposite sides of the transfer apparatus.

Abstract: A storage container for mounting externally to the rear of an automobile and which comprises a substantially rigid container the container having an articulated mounting to enable it to be mounted to the rear of an automobile and when mounted be movable between a raised position providing ground clearance for forward travel of the automobile and a lowered position proximate to the ground to facilitate loading and unloading of the container and to provide clearance to allow a rear upwardly lifting door of the automobile to be opened.

Abstract: An apparatus for transferring long stock (3) from or to either of two storage racks (1) arranged in parallel to each other, to a processing station, such as a saw. The apparatus is located in an aisle (4) between the storage racks and has a pair of arms (18, 19, 20, 20a) arranged in a parallel linkage system. The arms are journalled on the apparatus for simultaneous pivotal movement. The free end of each pair of arms has a conveyor (9, 10) mounted thereon to extend in parallel and adjacent to the storage racks (1) between upper and lower positions which for each conveyor are substantially identical. A hoist is provided for loading long stock onto, and remove it from, either conveyor (9, 10) in its upper position. In the lower position either conveyor (9, 10) is aligned with a processing station.

Abstract: A front-end loader includes a pair of loader arms and features a parallelogram-shaped plate assembly associated with each arm and having first and second corners respectively pivotally mounted to the forward end of a respective loader arm and to an implement carrier holder and having third and fourth corners respectively pivotally coupled to levelling and tilt linkage assemblies. A tilt cylinder is mounted between the tilt linkage assembly and the parallelogram-shaped plate assembly. The parallelogram-shaped plate assembly serves to transfer levelling linkage and tilt cylinder inputs to an implement carrier holder coupled to a mounting bracket at the rear side of a bucket.

Abstract: An industrial robot, particularly for use as an interpress robot, includes a pair of arms rotatable around two axes parallel to and spaced apart from each other, on which there are articulated two forearms. The opposite ends of the forearms are mutually articulated around a common axis and one of these forearms rotatably supports a wrist for rotation around a third axis parallel to said first and second axis.

Abstract: A feeder for transferring workpieces from one press to another on a press line includes a carrier device with a linkage whose free, load-carrying end executes a horizontal linear movement on both sides of the carrier. The end of the linkage system is secured in an elongate boom whose longitudinal direction coincides with the linear movement. The boom is provided with a holder device appropriate to the workpieces and movable along the boom by an endless belt which, at the ends of the boom, runs over rollers and which, with the lower part, is secured in the holder device and, with the upper part, in the carder device. The boom is provided with a sliding guide and is supported on the carrier device.

Abstract: When an impact load is applied to a workpiece which is held by the robot, the impact force can be absorbed. The robot includes a grip 3 for holding a workpiece to which an impact load is applied and a buffer mechanism disposed between the grip 3 and a robot arm 2. The buffer mechanism 4 includes two parallel link mechanisms 5, 6 for enabling the grip 3 to be moved in various directions and hydraulic actuator mechanisms 7, 8 for relaxing the actuation of the parallel link mechanisms 5, 6. When an impact force is applied to the grip 3, two parallel link mechanisms 5, 6 are actuated so that the grip 3 is slightly displaced while the hydraulic actuator mechanisms 5, 6 relax the actuation of the parallel link mechanisms 7, 8. Therefore, the impact force which is applied to the grip 3 can be absorbed. Additionally, after the impact force is applied to the grip 3, the buffer mechanism 4 can immediately be returned automatically to the initial position.

Abstract: A lifting apparatus preferably for applications in which a floor covering is to be removed and/or installed, has a lever arm and support that provide portions of two interconnected linkages. An interchangeable bracket is raised and lowered by the lifting apparatus. The bracket is provided with portions that insert into a partition member to raise the partition when the bracket is raised by the lifting apparatus.

Abstract: A load balancing arm is shown and described as having improved control including a programmable control element and electronic air regulation to provide precise and controllable lifting force on a load. The disclosed load balancing arm responds to slight operator applied force to aid in movement of the load in overcoming system hysteresis, friction and load inertia without requiring the operator to apply a sufficiently large magnitude force to overcome such counteracting forces in the system. The disclosed load balancing arm further includes automatic load weight detection sensors for accommodating variation in load weights while applying a lifting force to the load which substantially equals the weight of the load. This allows the operator to move the load freely throughout a work space.

Abstract: An arm mechanism to be operated at a proximal location to move a tool at a distal location. The arm mechanism includes an outer series of links and an inner series of links. Each series of links are connected together in an engaging relationship and in an in-line relationship with the outer series of links being pivotally mounted on the inner series of links. The arm mechanism is capable of being moved through almost three hundred and sixty degrees with the tool being movable in precise increments.

Abstract: A new and improved winch operated vehicle mounted carrier comprised of an upper rectangular section having a securement bar extending inwardly therefrom. The securement bar is received within a class 3 trailer hitch for securement of the upper rectangular section thereto. An electric winch is secured to the upper rectangular section. The electric winch has a drive cable theresecured. The drive cable has a securement portion extending downwardly therefrom. The invention includes two pairs of arms. Each of the two pairs of arms is pivotally secured to a lower portion of the upper rectangular section. A lower support bracket is pivotally secured to an opposing end of the two pairs of arms. A latch is secured to a middle portion of the lower support bracket. The latch couples with the securement portion of the drive cable of the electric winch. A lower support tray is secured across the lower support bracket. Two spring-loaded catches are secured to an outer portion of the upper rectangular section.

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: A robot assembly, including a central hub, has two arms arranged for independent rotation about the hub. Two carriers, oriented 180.degree. apart from each other, are coupled to an end of each of the arms. A drive is provided for rotating the arms in opposite directions to extend one or the other of said carriers radially from said central hub, and for rotating the arms in the same direction to effect rotation of the carriers.

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. The jacks may include linkages which cause the load to be lifted wholly vertically while not undergoing any horizontal translational movement.

Abstract: A spot welding robot including a base and an arm assembly mounted on the base. The arm assembly includes a lower arm mounted at a lower end on the base for a swingable movement about a substantially horizontal first axis, a swingable member mounted on the lower arm at an upper end portion of the lower arm for a swingable movement about a second axis which is parallel with the first axis, and an upper arm mounted at one end portion on the swingable member for a swingable movement about a third axis which is perpendicular to the second axis. The swingable member has a portion extending in a direction opposite to the direction in which the upper arm extends. A driving motor is provided on the swingable member for driving the upper arm to produce the swingable movement of the upper arm about the third axis.