A system for manufacturing radionuclide generators includes an enclosure defining a radioactive environment. The enclosure includes radiation shielding to prevent radiation within the radioactive environment from moving to an exterior of the enclosure. The system also includes a conveyance system having a forward track and first carriages positioned on and movable along the forward track for conveying racks in a first direction. The conveyance system also includes a first walking beam mechanism magnetically coupled to the first carriages to move the first carriages. The conveyance system further includes a return track and second carriages positioned on and movable along the return track for conveying racks in a second direction opposite the first direction. The forward track and the return track form a loop.

The present invention overcomes the disadvantages of the prior art by providing a pneumatic lift apparatus for a ladder. The apparatus is attachable to a conventional extendable ladder. The apparatus attaches to the lower end of the ladder and includes attachments for attaching the side rails of the ladder. A plate is attached in weight bearing relation between opposing pneumatic pistons which serve to lift the plate relative to the rails.

The invention provides a tool for moving a drivetrain component in a nacelle of a horizontal axis wind turbine, the nacelle comprising a nacelle structure, the component being connected, in operation of the wind turbine, to a rotor of the wind turbine, the tool comprising at least drive unit for moving the component in relation to the nacelle in a direction parallel to the rotational axis of the rotor, and a plurality of position adjustment devices adapted to be located between the nacelle structure and the component, and distributed so that rotational movement of the component can be provided by coordinated control of the position adjustment devices.

A precision shaft alignment system for establishing precise concentric axial alignment of a first shaft rotatably mounted and extending from a fixed unit and a second shaft extending from a variable position unit towards the first shaft includes a control and computing interface module, a pair of measuring means for precisely measuring at least one position of the first shaft and the second shaft and a jacking system for precisely aligning the shafts. The pair of measuring means is in communication with the control and computing interface module for transferring the at least one position of the first shaft and the second shaft for establishing precise concentric axial alignment of the first shaft and the second shaft. The jacking system is controlled by the control and computing interface module for precisely aligning the shaft.

An integrated air jack assembly for a snowmobile for generally lifting the snowmobile from a stuck position to a free position. The assembly including a pair of airbags positioned on an underside of a chassis and coupled to an air source for inflation. In the preferred configuration of the device, the air source is a jet powered fan configured to inflate a first airbag and a second airbag for raising an underside of a chassis of the snowmobile.

A method of controlling operation of a linear actuator, including maintaining the linear actuator in equilibrium when supporting a first load, determining application of a second load on the linear actuator, and selectively actuating the linear actuator in response to application of the second load on the linear actuator.

A lifting system includes a base and an upright extending from the base. An articulating arm assembly is coupled to the upright. The articulating arm assembly has a platform coupled thereto. The lifting system further includes a prime mover. The prime mover engages the articulating arm assembly to elevate the platform to a desired height.

A container transfer system is disclosed. The container transfer system includes a conveyance mechanism configured to support a container and move the container along a first axis, and a lift mechanism configured to raise and lower the conveyance mechanism.

A lifting device including a first platform, a second platform, a gas spring and a locking device is provided. The first platform includes a base and a first column connected to each other. The second platform includes a working table and a second column connected to each other. The second column and the first column are movably connected. The second column has a plurality of engaging holes. The gas spring includes a first end and a second end opposite to each other. The first end connected to the first column, and the second end connected to the second column. The locking device partially disposed at the first column, and a portion of the locking device being adapted to penetrate the engaging holes to fix a relative position between the second column and the first column.

A drum loading and unloading system and method for loading and unloading a drum. The system includes a portable base unit having pedestals for holding a drum at a predetermined position for loading and unloading material from the drum; a pair of pneumatic cylinders attached to the portable base supporting a cross-beam; a pumping piston attached to the cross-beam for pumping material into and out of the drum; and a lifting device attached to the cross-beam for lifting the drum onto the pedestals of the portable base.