A combination check valve and pressure relief valve is provided for use in regulating the flow of fluid between a first fluid side and a second fluid side. The valve may include a valve body, a valve insert positioned within an aperture of the valve body, a check poppet attached to the valve insert, and a check spring positioned between the valve insert and the valve body. In addition, a relief spring and a relief poppet may be positioned within a cavity formed by the valve insert and secured in...

A system, method and program product for predictive condition monitoring of a monitored system by means of sub-band decomposition of a complex monitored signal. Features of the decomposed signal are extracted for modeling estimation and detection of deviations in the features. Deviations are indicative of impending monitored system fault.

A valve assembly connects into a drill string for opening and closing a passage within the drill string. The valve assembly has an inner valve member for opening and closing an inner passage of the drill string. The valve member moves between the open and closed positions in response to axial movement of the drill string. Lifting the drill string causes the upper portion to move upward relative to the lower portion, bringing along with it the valve member, while the valve sleeve remains stationa...

A method and apparatus are provided that reduce the amount of memory needed to perform forward-backward recursion to identify posterior probabilities. Under the invention, a forward recursion is performed to identify forward recursion scores. The forward recursion scores are then used directly in a backward recursion to determine posterior probabilities for each state in a set of time frames. The usefulness of this invention is especially high when there is a large number of discrete states, suc...

A valve for use in a chest drainage device is disclosed, the chest drainage device is adapted to receive liquid and air from a patient's chest cavity via an inlet and to permit air to escape through an outlet for air to leave the chest drain, the inlet and outlet define a flow path and the valve is disposed along the flow path. The valve has a valve element that separates an upstream chamber from a downstream chamber and has a first and second sealing surface that are opposed so that when the fi...

A redundancy circuit in a semiconductor memory device having a multiblock structure in which a memory cell array is classified into a plurality of memory cell blocks, an integrated redundancy circuit having a plurality of fuse boxes for storing, per block, addresses of defective memory cells provided in the plurality of memory cell blocks, the plurality of fuse boxes being connected to the common precharge unit and being selectively activated in response to a block distinction selection signal.

The present invention relates to a method and program product for facilitating the maintenance of current bookmarks and preventing the loss of information associated with a bookmark. In one aspect, the invention bookmarks a Uniform Resource Locator (URL) associated with one or more HTML documents at a user's request and creates a database table containing each bookmarked URL. The source code of the bookmarked URL is scanned for embedded links which are stored in the table according to the relate...

A system and methods for rapid unloading and reorganization of heirarchical databases. Overflow and a window of blocks are progressively read into memory. Unloading proceeds as the scan cylinders window moves ahead. The reading of blocks stays about scan cylinders ahead of the unload. As a segment is unloaded, its space is converted to free IMS space and when appropriate, combined with adjacent free space already in the block. Thus about a window behind the unload point in the database, all of t...

An apparatus and method is disclosed that configures two files for more rapid comparison by removing blank spaces from the code of all of the lines in each of the files to be compared and also by attaching a control to the beginning of each line of code in each of the two sources prior to be compared. After blank spaces are removed and the controls attached, the two files are compared to determine additions, deletions and changes. The program continues to compare the strings of identical length ...

A valve mechanism to control fluid flow between a fluid pumping device and a system that includes an inlet from the fluid pumping device, a first valve, a second valve, a first outlet fluidly connected to the system, and a second outlet. The first valve prevents backflow of fluid when the fluid pumping device discontinues pumping fluid to the system. The second valve checks fluid flow through the valve to the first outlet when fluid pressure at the inlet is less than a first predetermined pressu...