317results about How to "Difficult to maintain" patented technology

A method has been invented for recovering hydrocarbons from an earth formation containing hydrocarbons, the method including injecting a recovery injectant into the earth formation at a plurality of injection points spaced apart by about 14 to about 208 feet, and producing hydrocarbons from the formation with at least one producer well. In one aspect the method includes injecting steam into an earth formation which contains oil bearing diatomite at a plurality of injection points spaced apart by about 14 to about 208 feet, and producing hydrocarbons from the formation with a one or more producer wells extending into the oil bearing diatomite formation, with a plurality of producer wells spaced apart by a distance ranging between about 14 to about 149 feet, injecting steam into the oil bearing diatomite at an injection rate of between about 10 to about 149 barrels of steam per day per hundred feet thickness of diatomite, and injecting the steam at a pressure between about 10 p.s.i. to about 260 p.s.i. The present invention also discloses a method for treating a hydrocarbon-bearing diatomite formation including applying an artificial overburden over at least a portion of the formation and applying a variable well spacing as needed. A field on an earth formation has been invented for recovering hydrocarbons, the earth formation having an earth surface above it, the field including a plurality of injector well and a plurality of producing wells, the field including at least one injector well per acre of earth surface above the earth formation and at least one producing well per acre. Certain parts of the wells may be in below-grade chambers.

A battery case for a mobile device is provided comprising a case, electrical components, a port, and an aperture size to contain at least one rechargeable battery. Also provided is a charger including a mount to receiving a rechargeable battery. The rechargeable battery may be configured to fit inside of the battery case. The charger may be figured to fit inside of the battery case.

First, the invention sets up output port grouping rule and filtering tapping rule. Then, data filtering tapping process is carried out. IP data packets are picked up from original data packets received from network based on protocol analysis. Based on filtering tapping rule, data relevant to following processes are partitioned to group of each output port. Hash operation is carried out for address of data packet and port information in partitioned each group. Modular operation is carried our between the said Hash value and total number of port. The result is number of output port for the corresponding data packet in the group the data packet belongs to. Under high-speed backbone network, the invention meets need for clustering process and forwarding at high speed for mass data stream.

An improved method and apparatus for drilling tapered holes in workpieces with laser pulses is presented which uses defocused laser pulses to machine the holes with specified taper and surface finish while maintaining specified exit diameters and improved system throughput. A system is described which can also drill holes with the desired taper and surface finish without requiring defocused laser pulses.

This invention is a voice identification lock module and its working method. The module is composed by a keyboard, voice collecting module, voice processing module, switch status output module, voice notice module and RS232 communication port. The lock key is based on identification of individual voice character. Error rate is less than 1%.

The present invention provides methods of transducing a gene into activated T cells comprising the step of contacting a paramyxovirus vector with activated T cells. This invention also provides a method of preparing T cells transduced with a foreign gene comprising the step of contacting a paramyxovirus vector with activated T cells. This invention also provides T cells transduced with a foreign gene prepared by this method. The present invention enables efficient gene transduction specific to activated T cells, and is expected to be applied to immunological modification strategies using T cell-directed gene delivery.

A linear motor includes a plurality of electromagnetic coils continuously arranged and a magnet assembly disposed such that it may travel due to the interaction between itself and the magnetic fluxes from the coils. The coils include U, V, and W phase coils in star connection. The coils of the individual phases are installed in series around a hollow-shaft center core over the travel range of the magnet assembly such that the magnetic pole axis thereof is oriented in the same direction as the axis of the center core. The magnet assembly has an annular shape so that it may surround the coils, and is formed of a plurality of permanent magnets. The magnets are combined in series such that the same magnetic poles oppose each other and the magnetic pole axis is oriented in the same direction as the axis of the center core.

A wind energy system comprising a wind turbine comprising a cowling surrounded by a diffuser and a plurality of inner rotor blades located inside of the cowling that rotate about an inner hub, a plurality of outer rotor blades positioned between the diffuser and the cowling that are counter-rotating relative to the plurality of inner rotor blades, a drive mechanism located within the inner rotor hub, a dynamic telescopic tower, and a tower support that connects the wind turbine to the dynamic telescopic tower.

The present invention provides paramyxoviral vectors expressing polypeptides that comprise antibody variable regions. A vector of this invention, encoding antibody variable regions of the H and L chains, succeeded in simultaneously expressing these antibody chains to form a Fab, and further succeeded in expressing a single chain antibody at a high level. The vectors of this invention are suitable as vectors for gene therapy, to be administered in vivo or ex vivo to living bodies. In particular, vectors expressing antibody fragments against neurite outgrowth inhibitors are useful in gene therapies for nerve lesions. Further, vectors of this invention that express antibodies which inhibit immune activation signal transduction enable the long-term expression of genes from the vectors.

A lightweight and compact super-insulation system that is also capable of supporting a high level of compressive load is described. The system utilizes spacers to provide structural support and utilize controlled buckling of a thin protective outer skin supported by spacers to form strong catenary surfaces to protect insulation material underneath. The spacers may comprise an aerogel, or an aerogel may provide insulation separate from the spacer yet contained within the thin outer skin. The system will be useful for thermal management of variety of deep underwater structures such as pipe-in-pipe apparatus, risers or subsea trees for ultra-deep water oil-and-gas exploration.

A parallel robot includes a base, a movable platform, a plurality of control arms, a rotation arm, a plurality of first actuators, and a second actuator. The control arms rotatably interconnect to the base and the movable platform, respectively. Opposite ends of the rotation arm are universally rotatably connected to the base and the movable platform, respectively. The first actuators move the control arms, respectively. The second actuator rotates the rotation arm around a central axis. Each control arm comprises a first transmission member and a transmission cable. The first transmission member comprises a fan-shaped transmission portion. Each first actuator comprises a transmission shaft to engage the first transmission member of the control arm. The transmission cable coils around the transmission shaft for at least one winding, then criss-crosses, and winds on the fan-shaped transmission portion.

A system and method for determining a location. The system employs encoded information devices dispersed through the environment, each having, a non-unique code associated therewith. The codes from the encoded information devices are acquired as a reading device passes nearby, and stored. The codes from a proximate set of information devices are correlated with a map or mapping relation to determine one or more consistent positions within the environment. The information devices are preferably passive acoustic wave transponders and the mapping relation may be a pseudorandom sequence or a defined map.

A parallel robot includes a fixed platform, a movable platform, a plurality of control arms, a rotation arm, a plurality of first actuators, and a second actuator. The control arms are rotatably connected to the fixed platform and the movable platform, respectively. Opposite ends of the rotation arm are universally rotatably connected to the fixed platform and the movable platform, respectively. The first actuators are to respectively move the control arms. The second actuator is to drive the rotation arm to rotate around the center axis of the rotation arm. Each control arm includes a first transmission unit including a transmission member. Each first actuator includes a transmission gear to engage the transmission member of the control arm.

A vehicle rear body structure including: a cross member provided beneath a rear parcel shelf to connect upper ends of rear suspension towers; a strip member provided along a rear edge of a floor panel; and panel members provided between the cross member and the strip member to connect the cross member and the strip member. The panel members include a center panel and a pair of side panels arranged on outer sides in a vehicle transverse direction of the center panel, respectively. Each of the side panels is joined along an inner edge in the vehicle transverse direction thereof to the center panel by a continuous welding.

An enzymatic process is described for the production of chemicals from carbon sources. In particular, according to one aspect, a process for the production of a target organic compound from a carbon source by a cell-free enzyme system is disclosed.

The invention relates to a modeling method for a substation-dispatching center two-level distributed type power grid, which belongs to the technical field of operation and control of an electric power system. The method includes that a network model containing a topological structure, device parameters and measuring information and a wiring scheme are built in each substation local and used for monitoring, analyzing and calculating the substation locals, and substation models and wiring schemes which are suitable for a dispatching center are led out automatically and transmitted to the dispatching center through an electric power dispatching data network; and at a dispatching center level, based on global consistency of line identification, all the substation network models are in butt joint to be automatically spliced into a global power grid model used for achieving monitoring, analysis and control of a whole network. The method achieves once modeling and whole network utilization, and provides a modeling basis for layered grading information processing and self-healing of the power grid.

A modeling system and modeling method based on a logical relation, including an operation task integrating module, a task interpreter, a graph layout correcting module, a graph wiring correcting module and a database model increment correcting module, wherein the database model increment correcting module includes a graph increment calculating unit and a model increment calculating unit. The system, through description of the logical relation and based on support of the automatic wiring technology, realizes the graph-model integrated generation of a new grid model of the power system which is based on the description of the logical relation; the grid model is completely defined and modified on “one net”, which is different from the original way that the power system model is established on countless net graphs, thereby helping the grid operation manager to accurately and rapidly establish and modify the grid model of the full system.

This invention is in the field of snow removal. More particularly, the invention provides a snowplow blade and an attachment apparatus to be secured to the front of a contractors type wheelbarrow and operated manually. Snow removal is facilitated by the ability to add ballast to the wheelbarrow, which preserves momentum, and by the unique design.