Abstract: A guard assembly for a machine is provided. The guard assembly includes a guard structure and a frame. The frame is attachable to the machine at a machine component. The guard structure is pivotably connected to the frame and movable between a first position and a second position. The frame further includes a magnet structure to releasably couple the frame to the machine component. Furthermore, the frame includes a cap being secured to the magnet structure. The cap includes a skin having at least one side extending beyond the magnet structure and contacting at least a portion of the machine component.

Abstract: A guard assembly for a machine is provided. The guard assembly includes a guard structure and a frame. The frame is attachable to the machine at a machine component. The guard structure is pivotably connected to the frame and movable between a first position and a second position. The frame further includes a magnet structure to releasably couple the frame to the machine component. Furthermore, the frame includes a cap being secured to the magnet structure. The cap includes a skin having at least one side extending beyond the magnet structure and contacting at least a portion of the machine component.

Abstract: A hinge assembly including a flat plate and a bent plate is provided. The flat plate includes a first slot extending at least partially along a width of the flat plate and disposed substantially perpendicular with respect to a central axis of the flat plate. The bent plate includes a first portion, a second portion, and a third portion. The second portion includes a second slot extending at least partially along a width of the bent plate and disposed substantially perpendicular with respect to a central axis of the bent plate. The second slot is adapted to interconnect with respect to the first slot to pivotally move the hinge assembly between an open position and a close position. In the open position, the first portion of the bent plate is adapted to contact a first half section on a first side of the flat plate.

Abstract: A hinge assembly including a flat plate and a bent plate is provided. The flat plate includes a first slot extending at least partially along a width of the flat plate and disposed substantially perpendicular with respect to a central axis of the flat plate. The bent plate includes a first portion, a second portion, and a third portion. The second portion includes a second slot extending at least partially along a width of the bent plate and disposed substantially perpendicular with respect to a central axis of the bent plate. The second slot is adapted to interconnect with respect to the first slot to pivotally move the hinge assembly between an open position and a close position. In the open position, the first portion of the bent plate is adapted to contact a first half section on a first side of the flat plate.

Abstract: A valve guard for a valve assembly associated with a machine includes a first portion and a second portion disposed adjacent to the first portion. Each of the first and second portions includes a plurality of tabs. Further, at least one tab of the plurality of tabs is adapted to be removed from the first and second portions based on a configuration of the valve assembly. The removal of the at least one tab from the first and second portions provides at least one passage for connecting at least one fluid line with the valve assembly.

Abstract: A valve guard for a valve assembly associated with a machine includes a first portion and a second portion disposed adjacent to the first portion. Each of the first and second portions includes a plurality of tabs. Further, at least one tab of the plurality of tabs is adapted to be removed from the first and second portions based on a configuration of the valve assembly. The removal of the at least one tab from the first and second portions provides at least one passage for connecting at least one fluid line with the valve assembly.

Abstract: Simulation of downhole transient pressure effects due to propellant stimulation of a formation provides information that may be utilized to select a type of perforating tool system and other components that contribute to effective stimulation of a formation. A well simulator pressure vessel comprises a perforating tool system that comprises a type of perforating gun assembly that includes one or more shaped charges. A propellant disk assembly adjacent to a sample formation is coupled to the perforating tool system. The propellant disk assembly comprises one or more components for securing the propellant. A transient pressure effect may be measured once the one or more shaped charges are detonated and the propellant is ignited or deflagrated. The measured transient pressure effects may be utilized to alter or change the one or more components of the perforating tool system prior to, during, or after stimulation of the sample formation.

Abstract: To optimize the efficiency of a perforating tool system, downhole conditions may be simulated to determine the optimal configuration for the perforating tool system. A simulated wellbore is disposed in a pressure vessel and coupled to a target composite core assembly. A perforating tool system is disposed in the simulated wellbore above the target composite core assembly. The target composite core assembly includes an outer shell. The outer shell comprises a material that supports a rubber bladder or flexible jacket that is disposed about the outer shell. The outer shell isolates the overburden fluid and pressure from the inner core during a radial flow test to more accurately simulate conditions downhole. A parameter of a perforating tool system may be altered based, at least in part, on a result from the radial flow test.

Abstract: A system for processing text files to extract and create conceptual graphs. The system determines key terms, prescribes a set of edge relations (i.e., defines edge categories), and the extracts conceptual graphs from source documents, including raw text, using these representations together with a semantic parser, followed by post processing. The conceptual graphs can then be used for a variety of purposes, including the creation of questions in an automated tutor system.

Abstract: To optimize the efficiency of a perforating tool system, downhole conditions may be simulated to determine the optimal configuration for the perforating tool system. A simulated wellbore is disposed in a simulated wellbore case and coupled to a formation sample. The simulated wellbore comprises the perforating tool system and one or more filler discs that consume a volume of the simulated wellbore. The filler discs are used to control the dynamic underbalance for a given simulation of a perforating tool system. One or more measurements associated with the perforating tool system along with one or more images may be generated after explosive charges of the perforating tool system are detonated. The perforating tool system may be modified based, at least in part, on the one or more measurements and the one or more images for the specific dynamic underbalance of the simulation.

Abstract: A neck-worn personal air filtration device for filtering aero-allergens and providing a zone of filtered air around or near a user's breathing zone is described. The device may include an air source adapted to deliver a pressurized airflow, a hose, and a neck-worn plenum including a filter. The airflow being caused to accumulate within the plenum and exit the plenum through the air permeable surface. The air is filtered by a filter for breathing by the user.

Abstract: A personal air filtration device and methods of using the same for providing a zone of filtered air proximate a breathing zone of a user are described. A blower provides an air flow to a head support which delivers the air flow to a zone proximate the users head. The air flow passes through a filter. The filter can be a point of delivery filter disposed about an air permeable surface of the head support. The delivered air flow can provide a laminar air flow defining a zone of filtered air about the user's breathing zone.

Abstract: A personal air filtration device and methods of using the same for providing a zone of filtered air proximate a breathing zone of a user are described. A blower provides an air flow to a head support which delivers the air flow to a zone proximate the users head. The air flow passes through a filter. The filter can be a point of delivery filter disposed about an air permeable surface of the head support. The delivered air flow can provide a laminar air flow defining a zone of filtered air about the user's breathing zone.

Abstract: A neck-worn personal air filtration device for filtering aero-allergens and providing a zone of filtered air around or near a user's breathing zone is described. The device may include an air source adapted to deliver a pressurized airflow, a hose, and a neck-worn plenum including a filter. The airflow being caused to accumulate within the plenum and exit the plenum through the air permeable surface. The air is filtered by a filter for breathing by the user.

Abstract: A personal air filtration device and methods of using the same for providing a zone of filtered air proximate a breathing zone of a user are described. A blower provides an air flow to a head support which delivers the air flow to a zone proximate the users head. The air flow passes through a filter. The filter can be a point of delivery filter disposed about an air permeable surface of the head support. The delivered air flow can provide a laminar air flow defining a zone of filtered air about the user's breathing zone.

Abstract: A neck-worn personal air filtration device for providing a zone of filtered air around or near a user's breathing zone is described. The device comprises a blower, a hose, and a neck-worn plenum including a filter. Air blown from the blower, passes through the hose and into the plenum exiting the plenum. The air is filtered by a filter for breathing by the user.

Abstract: A token used when a first device authenticates itself to a third device may be associated with a token issue timestamp. Upon receipt of an indication that all previously issued tokens are to be revoked, a second device may store a revocation timestamp. Upon receiving, from the second device, a request for establishing conditions for a file transfer, from the first device, and an indication of a token issue timestamp associated with the request, the second device may compare the token issue timestamp to the revocation timestamp. Responsive to determining, based on the comparing, that the token issue timestamp precedes the revocation timestamp, the second device may deny the request.

Abstract: A method, apparatus, and system for managing load in a server are provided. The server performs events for a plurality of electronic communication devices, each of the devices enabled to transmit to the server, at a respective given time and at a respective given frequency, a request to perform a respective event. The server receives the requests and determines that its load is above a threshold load value during a given time period when the requests arrive. In response, for a subset of the devices, the server transmits a delay time to each electronic communication device in the subset. The delay time causes each device in the subset to change the respective given time to a respective new time comprising the delay time added to the respective given time such that a next request is transmitted from each device in the subset to the server at the respective new time.

Abstract: A third party that performs data stream computation is requested to return not only the solution to the computation, but also “annotations” to the original data stream. The annotations are then used by the data owner (in actuality, a “verifier” associated with the data owner) to check the results of the third party's computations. As implemented, the verifier combines the annotations with the original data, performs some computations, and is then assured of the correctness of the provided solution. The cost of verification is significantly lower to the data owner than the cost of fully processing the data “in house”.

Abstract: A token used when a first device authenticates itself to a third device may be associated with a token issue timestamp. Upon receipt of an indication that all previously issued tokens are to be revoked, a second device may store a revocation timestamp. Upon receiving, from the second device, a request for establishing conditions for a file transfer, from the first device, and an indication of a token issue timestamp associated with the request, the second device may compare the token issue timestamp to the revocation timestamp. Responsive to determining, based on the comparing, that the token issue timestamp precedes the revocation timestamp, the second device may deny the request.