Abstract: Airline operator-customers manage aircraft maintenance data for fleets of commercial aircraft using a suite of electronic maintenance tools that are delivered to the customers over the Internet and viewed with a web browser. The maintenance tool suite includes an authoring module that allows customers to create, edit and manage both OEM originated aircraft maintenance data and the customers' own data within a fully integrated environment running as a web application over the Internet. The authoring module combines workflow, XML authoring and editing, import/export of the data, change reconciliation, and publishing of airline customer authored documents, airline customer authored changes, OEM Temporary Revisions, and OEM aircraft maintenance documents into a single integrated web application using XML as the maintenance document format. The use of XML as the native format of the aircraft maintenance data allows the customers to reuse the data in a variety of ways.

Abstract: Airline operator-customers manage aircraft maintenance data for fleets of commercial aircraft using a suite of electronic maintenance tools that are delivered to the customers over the Internet and viewed with a web browser. The maintenance tool suite includes an authoring module that allows customers to create, edit and manage both OEM originated aircraft maintenance data and the customers' own data within a fully integrated environment running as a web application over the Internet. The authoring module combines workflow, XML authoring and editing, import/export of the data, change reconciliation, and publishing of airline customer authored documents, airline customer authored changes, OEM Temporary Revisions, and OEM aircraft maintenance documents into a single integrated web application using XML as the maintenance document format. The use of XML as the native format of the aircraft maintenance data allows the customers to reuse the data in a variety of ways.

Abstract: A cartridge valve assembly (19) including a sleeve valve (49) fixed within a valve housing (17), and a spool valve (47) moveable both axially and rotatably within the sleeve valve. Rotation of an input (35,39) causes rotation of a cam member (43) and the spool valve, and the engagement of the cam member (43) with a cam surface (57) results in axial movement of the spool valve within the sleeve valve. The spool and sleeve valves define a neutral axial and rotational position (FIG. 5), and rotation from neutral in a first direction (FIG. 6) communicates fluid from an inlet port (21) to a first actuator port (25), and rotation from neutral in a second direction (FIG. 7) communicates fluid from the inlet port to a second actuator port (27). In either case, the axial movement of the spool valve (47), relative to the sleeve valve (49) is the same. The spool valve defines a load holding land (97) which, in the neutral position (FIG.

Abstract: A compressed natural gas solenoid controlled valve is mounted in the threaded opening of a pressure vessel which contains the gas. The valve includes a valve body having a head which is exposed outside of the pressure vessel and a neck which is located within the pressure vessel. A solenoid poppet valve is mounted to the inner end of the neck. A valve seat is mounted in a bore within the valve body, and provides a flow passage which extends between an orifice at the inner end of the valve seat and an outlet port which is located in the head of the valve body. The solenoid poppet valve includes a seal for closing the orifice, a bias spring which biases the seal toward the seat to close the orifice, a plunger which is connected to the seal, and a solenoid coil which, when energized, moves the plunger so that the seal moves out of engagement with the seat and permits flow of compressed gas from the interior of the pressure vessel to the outlet port.