| Patent application number | Description | Published |
|---|
| 20080246338 | MULTI-POWER SOURCE LOCOMOTIVE CONTROL METHOD AND SYSTEM - Control modes for operating multiple power sources include energy storage systems and applicable to large systems such as locomotives. Selectable operating modes are provided for different locomotive speed ranges and work loads. A common DC bus electrical architecture is used so that prime power sources need not be synchronized. Multiple-engine locomotives have the engine systems that may be electrically connected in parallel or in series or in combinations of parallel and series to a DC bus. | 10-09-2008 |
| 20080290825 | POWER ARCHITECTURE AND BRAKING CIRCUITS FOR DC MOTOR-PROPELLED VEHICLE - A dynamic braking circuit that can be operated with stability over both high and low speed regimes. This circuit has the advantage of using fewer components than previous circuits. In addition, when in braking mode, the armature and field currents tend to oppose each other across the main braking switch hence reducing electromechanical stresses when in high current regime. According to a second embodiment, a dynamic braking circuit implements a “soft” extended braking function with the capability of providing a smoother braking action at high braking effort at little extra cost resulting from the replacement of a contactor by a reverser. The main advantages of this preferred embodiment are that the current generated by the armatures during braking can be controlled independently from the excitation of the field windings at low speeds and that it enables simultaneous self supply, regeneration and dynamic braking. | 11-27-2008 |
| 20090295315 | DYNAMIC BRAKING CIRCUIT FOR A HYBRID LOCOMOTIVE - Methods of dynamic braking include two embodiments with braking circuits for vehicles such as, for example, locomotives which are operable down to very low speeds. These circuits can provide a braking force even at zero locomotive speed. | 12-03-2009 |
| 20100050925 | COMPRESSED NATURAL GAS BARGE - The present invention is directed to a maritime vessel that uses a solid or semi-solid material to enclose substantially natural gas storage vessels in the hold of the vessel. | 03-04-2010 |
| 20100106343 | MULTI-POWER SOURCE LOCOMOTIVE CONTROL METHOD AND SYSTEM - Control modes for operating multiple power sources include energy storage systems and applicable to large systems such as locomotives. Selectable operating modes are provided for different locomotive speed ranges and work loads. A common DC bus electrical architecture is used so that prime power sources need not be synchronized. Multiple-engine locomotives have the engine systems that may be electrically connected in parallel or in series or in combinations of parallel and series to a DC bus. | 04-29-2010 |
| 20100114404 | Rail Conveyance system for mining - A rail-based system is disclosed for moving materials and is applicable to a number of industries. The invention describes a system of automated self-powered rail cars operating independently to transport material such as ore from a work face in a mine or cargo from a marine port to a major transportation hub. | 05-06-2010 |
| 20100224370 | METHOD OF HEATING HYDROCARBONS - The present invention relates generally to a method and means of injecting hot fluids into a hydrocarbon formation using a combustion and steam generating device installed at or near the well-head of an injector well. The various embodiments are directed generally to substantially increasing energy efficiency of thermal recovery operations by efficiently utilizing the energy of the combustion products and waste heat from the generator. The generator apparatuses can be installed at the well-head which, in turn, can be located close to the producing formation. The combustion products may be injected into a well along with steam or sequestered at another location. | 09-09-2010 |
