Abstract: Various methods and devices are provided for allowing multiple surgical instruments to be inserted into sealing elements of a single surgical access device. The sealing elements can be movable along predefined pathways within the device to allow surgical instruments inserted through the sealing elements to be moved laterally, rotationally, angularly, and vertically relative to a central longitudinal axis of the device for ease of manipulation within a patient's body while maintaining insufflation.

Abstract: A security agent implemented on a monitored computing device is described herein. The security agent has access to parametric behavioral pattern definitions that, in combination with canonical patterns of behavior, configure the security agent to match observed behavior with known computing behavior that is benign or malignant. This arrangement of the definitions and the pattern of behavior allow the security agent's behavior to be updated by a remote security service without updating a configuration of the security agent. The remote security service can create, modify, and disseminate these definitions and patterns of behavior, giving the security agent real-time ability to respond to new behaviors exhibited by the monitored computing device.

Abstract: A security agent implemented on a monitored computing device is described herein. The security agent has access to parametric behavioral pattern definitions that, in combination with canonical patterns of behavior, configure the security agent to match observed behavior with known computing behavior that is benign or malignant. This arrangement of the definitions and the pattern of behavior allow the security agent's behavior to be updated by a remote security service without updating a configuration of the security agent. The remote security service can create, modify, and disseminate these definitions and patterns of behavior, giving the security agent real-time ability to respond to new behaviors exhibited by the monitored computing device.

Abstract: A security agent implemented on a monitored computing device is described herein. The security agent has access to parametric behavioral pattern definitions that, in combination with canonical patterns of behavior, configure the security agent to match observed behavior with known computing behavior that is benign or malignant. This arrangement of the definitions and the pattern of behavior allow the security agent's behavior to be updated by a remote security service without updating a configuration of the security agent. The remote security service can create, modify, and disseminate these definitions and patterns of behavior, giving the security agent real-time ability to respond to new behaviors exhibited by the monitored computing device.

Abstract: A security agent implemented on a monitored computing device is described herein. The security agent has access to parametric behavioral pattern definitions that, in combination with canonical patterns of behavior, configure the security agent to match observed behavior with known computing behavior that is benign or malignant. This arrangement of the definitions and the pattern of behavior allow the security agent's behavior to be updated by a remote security service without updating a configuration of the security agent. The remote security service can create, modify, and disseminate these definitions and patterns of behavior, giving the security agent real-time ability to respond to new behaviors exhibited by the monitored computing device.

Abstract: A computing device described herein is configured to receive a notification of an event associated with a plurality of system components. In response, the computing device determines a state for the system components based on a state for one of those system components specified in an event model. That specified state in the event model reflects a previous occurrence of another event.

Abstract: A computing device described herein is configured to receive a notification of an event associated with a plurality of system components. In response, the computing device determines a state for the system components based on a state for one of those system components specified in an event model. That specified state in the event model reflects a previous occurrence of another event.

Abstract: An integral separator and cooling apparatus is provided for removing a lubricant from a heated, compressed lubricant and gas mixture, and for cooling the separated lubricant. The apparatus includes a lubricant reservoir for containing a liquid lubricant. A receiving plenum is made integral with the lubricant reservoir. The receiving plenum has an inlet for receiving the heated, compressed lubricant and gas mixture, a first outlet through which a heated, compressed gas exits, and a second outlet through which the separated lubricant flows from the receiving plenum. An apparatus is provided within the receiving plenum which causes a liquid lubricant to precipitate from the lubricant and gas mixture. A cooling core is made integral with the lubricant reservoir and the receiving plenum. The cooling core fluidly communicates with the lubricant reservoir and with the receiving plenum.

Abstract: A self-contained seal air and instrument air system for a compressor includes a pneumatically controllable inlet valve and a pneumatically controllable valve means for depressurizing the compressor. An electronic controller directs compressor operation. A receiver tank is provided which includes an inlet through which compressed air enters and an outlet port. A means is provided for separating the compressed air flowing from the receiver into a first path which provides a first source of seal air to seals of a rotating shaft of the compressor, and a second path which provides instrument air. A means is provided for separating the compressed air flowing in the instrument air path into a first path which provides actuating air to the inlet valve and the valve means for depressurizing the compressor, and a second path which provides a source of signal air.

Abstract: An air cooling system for an engine driven, multi-stage compressor is provided which includes a fan means for providing a cooling airstream to the air cooling system and an engine radiator. An intercooler has a predetermined height dimension and receives heated, compressed, interstage air. An oil cooler has a predetermined height dimension which is substantially less than the height dimension of the intercooler. An aftercooler receives hot, compressed, final stage air. The intercooler, the oil cooler, the radiator, and the aftercooler are arranged in two banks, each bank comprising two cooling cores juxtaposed one to each other. The intercooler and the engine radiator define the first bank which is positioned substantially adjacent to the fan means to receive the coolest cooling airstream. The oil cooler and the aftercooler define the second bank which receives warmer cooling air which has first passed through the first bank.

Abstract: A portable compressed air system includes a housing, and a diesel engine having a predetermined torsional inertia, a predetermined cranking speed, and a predetermined idle speed. A centrifugal compressor is flexibly coupled in motive force receiving relation to the diesel engine. The flexible coupling has a predetermined spring rate which places the torsional interia of the compressor above a highest predetermined cranking speed and below the predetermined idle speed of the diesel engine. A microprocessor-based electronic controller controls compressor operation. A receiver stores compressed air. A cooling means cools the portable compressed air system. The cooling means has a fan, an intercooler, an oil cooler, an engine radiator, and an aftercooler. The intercooler, the oil cooler, the radiator, and the aftercooler are arranged in two banks, and each bank is defined by two cooling cores juxtaposed one to each other.

Abstract: An apparatus for loading a compressor includes a microprocessor based electronic controller, a pneumatically driven, spring loaded open first valve, and a normally open, electrically driven second valve flow connected in series with the first valve. The first valve and the second valve are fluidly disposed intermediate a receiver tank and the compressor. The second valve is disposed in signal receiving relation to the controller. An orifice and muffler combination is flow connected intermediate the first valve and the second valve. The orifice has a predetermined inside diameter dimension suitably sized to establish a pressure signal to close the first valve to thereby load the compressor.

Abstract: A compressor includes an air cooled lubricant temperature regulator and an engine for providing motive force to the compressor. A first, electric-driven, self-priming pump provides a supply of lubricant to the compressor prior to starting the engine and for a predetermined period of time after the engine is operating. The first pump is flow connected in fluid receiving relation with a lubricant reservoir. A first electronic controller means directs compressor operations, including directing operation of the first pump. A second electronic controller, external to the first controller means, directs operation of the first pump after engine operation. A second, compressor-driven, self-priming pump provides a primary lubricant pumping function during engine operation at predetermined run speeds.

Abstract: A method and apparatus for controlling working fluid surge in a centrifugal compressor include preventing surge by using a variable-speed prime-mover to achieve a minimum desired surge margin. Surge prevention is also accomplished by continuously modulating a blowoff valve to maintain an actual compressor pressure ratio at a predetermined target maximum value. Surge detection is accomplished by monitoring the time rate of change of the final stage discharge pressure.

Abstract: An aftercooler through which a first fluid passes. A cooling fan applies a cooling fluid to the aftercooler. A variable speed motor is rotatably coupled to the cooling fan. A temperature sensor, in communication with the first fluid, is located downstream of the aftercooler. A controller controls operation of the variable speed motor based upon the temperature applied to the temperature sensor to prevent condensate freeze-up.

Abstract: A compressor, used for compressing a working fluid to be discharged into a reservoir, includes at least one compressor element. A prime driver, capable of operating at varying angular velocities, applies motive force to the compressor. A ratio maintaining device, disposed between each compressor element and the prime driver, ensures that a ratio defined as an angular velocity of the compressor element divided by the angular velocity of the prime driver remains constant. The prime driver is typically internal combustion engine powered. A controllable fuel valve is in communication with the prime driver and is positionable for controlling a fuel flow to the prime driver. A controller positions the fuel valve based upon a combination of parameters including a variable setpoint reservoir pressure, ambient pressure and ambient temperature, wherein the prime driver is operated at an angular velocity at which the actual pressure at the reservoir can be maintained at the setpoint reservoir pressure.