Abstract: The gap sub assembly comprises a pair of electrically conductive subs. Each sub has a threaded pin and box. A pin and box are threaded together to form a connection. An electrically insulating, woven fabric overlies and conforms with the threads of the connection pin. An electrically insulating, annular washer separates the seal faces of the connection. The assembly functions to provide an electrical discontinuity when incorporated into a conductive drill string.

Abstract: A computational geometry server is provided that includes a server, a communication link, at least one client, and an interrupt interface. The server has processing circuitry and an operation manager. The operation manager is configured to compare source geometric data in a source geometric model with target geometric data in a target geometric model. Furthermore, the operation manager is operative to identify discrepancies in the geometric data between the source geometric data and the target geometric data. The at least one client communicates with the server over the communication link. The interrupt interface is operative to notify a user of the presence of an inability to automatically generate an accurate representation of the source geometric model in the target geometric model. A method is also provided.

Abstract: A geometric model comparator is provided, which includes processing circuitry, memory, and comparison circuitry. The processing circuitry is configured to generate a target model from a source model. The memory is configured to store the source model and the target model. The comparison circuitry is configured to identify selected points from the source model, create corresponding selected points in a target model, and compare the selected points from the source model with the selected points from the target model to identify one or more selected points from the target model that fall outside of a predetermined tolerance range with the respective one or more points from the source model. A method is also provided.

Abstract: The gap sub assembly comprises a pair of electrically conductive subs. Each sub has a threaded pin and box. A pin and box are threaded together to form a connection. An electrically insulating, woven fabric overlies and conforms with the threads of the connection pin. An electrically insulating, annular washer separates the seal faces of the connection. The assembly functions to provide an electrical discontinuity when incorporated into a conductive drill string.

Abstract: The present invention provides an apparatus for mounting a wheelchair back that provides a high degree of support and adjustability such that it can be used with wheelchairs that originate from a wide variety of different manufacturers. In order to provide this custom fit, the present invention provide for depth adjustability, height adjustability and angle adjustability of a wheelchair back. The present invention also provides the convenience of a quick-release wheelchair back so that the wheelchair occupant can easily remove the back of the wheelchair from the canes so that the wheelchair can be collapsed and stored. The present mounting system also provides for an effective two point mounting system that is reliable yet simple to use.

Abstract: The present invention provides an apparatus for mounting a wheelchair back that provides a high degree of support and adjustability such that it can be used with wheelchairs that originate from a wide variety of different manufacturers. In order to provide this custom fit, the present invention provide for depth adjustability, height adjustability and angle adjustability of a wheelchair back. The present invention also provides the convenience of a quick-release wheelchair back so that the wheelchair occupant can easily remove the back of the wheelchair from the canes so that the wheelchair can be collapsed and stored. The present mounting system also provides for an effective two point mounting system that is reliable yet simple to use.

Abstract: The invention provides a real-time package tracking system for use by a package delivery service. The system includes a vehicle operable to deliver a package to a destination of a customer within a region, a positional location system (e.g. GPS) carried by the vehicle, the positional location system being operable to determine geographic positional coordinates for sequential locations of the vehicle along the route thereof toward said destination. The system also includes a wireless transmitter means (such as a cell phone link) carried by said vehicle, for transferring the aforesaid geographic positional coordinates to a central computer. The computer is operable to providing periodic updated calculations to periodically estimate corresponding estimated arrival time (ETA) data for the specific package to said destination and to supply the aforesaid estimated arrival time data to said customer.

Abstract: A system having a server having processing circuitry and an operation manager configured to compare source geometric data of each of a plurality of features in a source geometric model with target geometric data of respective features in a target geometric model, and operative to identify discrepancies in respective features therebetween. The server is configured to rectify discrepancies in a feature after generating the feature and prior to generating another feature among the plurality of features. The system further includes a communication link, at least one client communicating with the server over the communication link, and an interrupt interface provided by one of the at least one client and the server and operative to notify a user of the presence of an inability to automatically generate an accurate representation of a feature of the source geometric model in the target geometric model.

Abstract: A hat light includes an elongated body with integral stabilizers extending laterally outwardly and positioned to engage the head of the wearer to substantially reduce rotary movement. The body is positioned within the hat with one end adjacent the hole. A hat engaging member is constructed to extend through the hole in the hat and engage the elongated body so as to fixedly grip the front portion of the hat to hold the elongated body oriented in an upward and backward direction within the hat. A light emitting diode is mounted in the elongated body and positioned to direct light in a forward direction from the front portion of the hat.

Abstract: An advanced composite hybrid-electric vehicle including one or more of lightweight, advanced composite structures, modular rear suspension and traction motor units, fuel-cell hybrid-electric powertrains, integrated electromagnetic and pneumatic suspension systems, and a digital network-based control system and information management architecture that uses a fault tolerant ring main power supply.

Abstract: A geometric model comparator is provided, which includes processing circuitry, memory, and comparison circuitry. The processing circuitry is configured to generate a target model from a source model. The memory is configured to store the source model and the target model. The comparison circuitry is configured to identify selected points from the source model, create corresponding selected points in a target model, and compare the selected points from the source model with the selected points from the target model to identify one or more selected points from the target model that fall outside of a predetermined tolerance range with the respective one or more points from the source model. A method is also provided.

Abstract: A computational geometry server is provided that includes a server, a communication link, at least one client, and an interrupt interface. The server has processing circuitry and an operation manager. The operation manager is configured to compare source geometric data in a source geometric model with target geometric data in a target geometric model. Furthermore, the operation manager is operative to identify discrepancies in the geometric data between the source geometric data and the target geometric data. The at least one client communicates with the server over the communication link. The interrupt interface is operative to notify a user of the presence of an inability to automatically generate an accurate representation of the source geometric model in the target geometric model. A method is also provided.

Abstract: A fluid power apparatus having a housing with a bore therein which is divided by a power piston into an inlet chamber and an outlet chamber. The power piston has a passageway for connecting the inlet chamber with an outlet chamber. A valve arrangement controls the flow of a fluid under pressure from a source through the passageway. The valve arrangement including a valve seal, a valve spring and an input rod. The valve spring urges the valve seal into engagement with the input rod to define a working chamber within said passageway. The fluid under pressure flows from the inlet chamber to the outlet chamber by passing between the valve seal and a valve seat located in the working chamber. The flowing of fluid past the valve seat in a rest mode of operation develops a turbulence which creates a broad band non-resonance sound having an acceptable audible level of approximately 30 dB.

Abstract: 1,4-Dienes of high trans-isomer content are prepared by contacting ethylene with a 1,3-diene in the presence of a catalyst system comprising an organic solvent-soluble organonickel compound in which the nickel is zerovalent or divalent, a hydrocarbylaluminum chloride or bromide, and an aminophosphine. Optionally, the catalyst system may also contain a heteroorganoaluminum compound.

Abstract: 1,4-Dienes of high trans-isomer content are prepared by contacting ethylene with a 1,3-diene in the presence of a catalyst system comprising an organic solvent-soluble organonickel compound in which the nickel is zerovalent or divalent, a hydrocarbylaluminum chloride or bromide, and an aryl phosphinite. Optionally, the catalyst system may also contain a heteroorganoaluminum compound.