Aspects of the invention provide a transport system powered by short block Linear Synchronous Motors (LSMs). The use of short blocks allows vehicles to move under precise control even when they are in close proximity to each other. The design allows the vehicles to be propelled and guided while negotiating sharp turns and negotiating merge and diverge switches. A coreless LSM can be used to create propulsive force without attractive force so as to allow a relatively high drag vehicle suspension, such as a vehicle sliding on a smooth surface.

Transport system powered by short block linear synchronous motors

The invention relates to an active linear induction motor system that has particular advantage with a SAILRAIL® air guided and supported air bearing system. In this case the secondary for the motor is the support rail, which rail can have a convex or a concave operating surface, is electrically conductive, and has ferromagnetic material in close proximity to the operating surface. The primary for the motor is found in a runner which cooperates with the rail and supports the load to be carried in the system. The primary includes a plurality of laterally adjacent, longitudinally extending and articulated ferromagnetic laminations having a longitudinally toothed surface that is transversely arcuate to be complementary to the rail operating surface. Electrical windings are wound about selected groups of teeth of the laminations as a LIM primary. A compliant pad adjacent the laminations is capable of deformation under load and at least partial recovery after load removal. Electrical power is continuously provided to the primary as it moves along the rail and polyphase electrical current is fed to the electrical windings. Cooling fluid is continuously provided to the laminations during operation of the primary. The system also provides pressurized fluid at high velocity into the space between the rail operating surface and the compliant pad, to support the primary member above the operating surface and to provide a minute pressurized magnetic and suspension gap between the primary and secondary members for efficient linear motor operation.

Pressurized air-gap guided active linear motor suspension system

Pharmaceutical compositions of the invention comprise sulfamoylbenzamide derivative useful as pregenomic RNA encapsidation inhibitors, useful for the treatment of Hepatitis B virus (HBV) infection.

Sulfamoylbenzamide derivatives as antiviral agents against HBV infection

The invention provides in some aspects a transport system comprising a guideway having a plurality of regions in which one or more vehicles are propelled, where each such vehicle includes a magnet. Disposed along each region are a plurality of propulsion coils, each comprising one or more turns that are disposed about a common axis, such that the respective common axes of the plurality of coils in that region are (i) substantially aligned with one another, and (ii) orthogonal to a direction in which the vehicles are to be propelled in that region. The plurality of coils of at least one such region are disposed on opposing sides of the magnets of vehicles being propelled along that region so as to exert a propulsive force of substance on those magnets. In at least one other region, the plurality of coils disposed on only a single side of the magnets of vehicles being propelled in that region exert a propulsive force of substance thereon—regardless of whether the plurality of coils in that region are disposed on a single or multiple (e.g., opposing sides) of those magnets.

Linear motor transport for packaging and other uses

A module for a linear motor propulsion guideway contains a combination of linear motor propulsion, vehicle guidance, position sensing, communication, and vehicle or pallet running surface subcomponents. These are integrated during the manufacturing into a single component or module for ease of shipping and precision of installation at a site where the guideway is to be installed. A single manufacturing operation is used to position, affix, and encapsulate the selected subcomponent(s) in a module or modules. For example, the component(s) can be designed to be located in a plastic injection mold, typically, a reaction injection mold (RIM), which allows the subcomponent(s) to be positioned, aligned, and encapsulated in a single manufacturing step that has only a several minute cycle time. In this manner positional accuracy among the relationship of the subcomponent(s) can be maintained within a small tolerance (on the order of 0.25 mm) while costs remain very low.

Modular linear motor tracks and methods of fabricating same

Electric linear locomotive

Induction linear traction motor for monorail systems

An induction linear electric motor comprising a pair of linear stators with their respective windings, movably mounted at the opposite sides of a stationary rotor member. Control of the travelling speed of the linear stators relative to the rotor in the direction of the motion of the traveling magnetic field, produced by the stators and their windings, is effected by displacing the stators and their windings relative to the rotor in a direction perpendicular to the direction of the motion of the magnetic field. When the travelling speed is controlled in the above-described member, with the stators displaced relative to the rotor, a portion of the magnetic flux produced by the stators is taken up by an auxiliary magnetic core of the disclosed; linear electric motor, this auxiliary magnetic core being disposed intermediate of the linear stators.

Induction linear electric motor

1,175,487. Linear induction motors. ZANOD ELEKTROTRANSPORTA IMENI F.E. DZERZHINSKOGO. 22 Feb., 1968, No. 8589/68. Heading B7L. [Also in Division H2] In a linear induction motor wherein a running rail 2 used as the secondary number is embraced on both sides by primary members, magnetic cores 1 of the latter are divided lengthwise, into articulated sections 3 which turn with respect to each other when travelling along a curvilinear rail of small radius of curvature. The cores are laminated and so overlapped as to have constant permeance at the joints formed by sleeves and which carry pins not shown connecting them to the motor body, and a rigid plastic bushing 8 at the joint is stated to prevent damage to the slotted primary winding. The motor is applicable to monorail traction systems and hoisting mechanisms.

Spektor Itskhok Avrumovich

Papers

Electric linear locomotive

Induction linear traction motor for monorail systems

Induction linear electric motor

Linear Induction Motors