Abstract: A hydraulic switching mechanism for the mobile hydraulics of, for example, hydraulic excavators, with a valve block, with electrohydraulically activatable valve units for controlling the movement of a working cylinder whose cylinder chambers can be selectively connected to a pump connection for hydraulic fluid, to a tank connection or to one another, and with pre-control valves for activating the valve units, wherein the hydraulic switching mechanism, by means of separate tank valve units and pump valve units, and also a suitable pre-control system, makes it possible to achieve a directional control valve function and a directly controlled and superimposed pre-controlled lowering braking function, a maximum pressure safeguarding of the cylinders and a proportional throttle valve function for the controlled displacement under negative load forces in the direction of movement and braking in an emergency; and mobile hydraulic machines having such a hydraulic switching mechanism and also to valve units therefor.

Abstract: A memory storage device has a file storage operating system which uses an inode to record and find segments of each data file. The inode includes a plurality of rows. A portion of the rows are written with direct extents pointing to data blocks storing portions of file segments. At least two of the extents point to data blocks having addresses in different logical volumes.

Abstract: A system interface includes a plurality of first directors, a plurality of second directors, a data transfer section and a message network. The data transfer section includes a cache memory. The cache memory is coupled to the plurality of first and second directors. The messaging network operates independently of the data transfer section and such network is coupled to the plurality of first directors and the plurality of second directors. The first and second directors control data transfer between the first directors and the second directors in response to messages passing between the first directors and the second directors through the messaging network to facilitate data transfer between first directors and the second directors. The data passes through the cache memory in the data transfer section. A method for operating a data storage system adapted to transfer data between a host computer/server and a bank of disk drives.

Abstract: A memory storage device has a file storage operating system that uses inodes to access file segments. Each inode has a plurality of rows. A portion of the rows can store extents pointing, directly or indirectly, to data blocks. Each extent has a field to indicate whether the extent is an indirect extent or a direct extent.

Abstract: A memory storage device has a file storage operating system that uses inodes to access file segments. Each inode has a plurality of rows. A portion of the rows can store extents pointing, directly or indirectly, to data blocks. Each extent has a field to indicate whether the extent is an indirect extent or a direct extent.

Abstract: The data storage facility includes a plurality of data storage devices coupled through multi-path connections to cache memory. A plurality of interfaces to host processors communicates with the cache memory and with cache tag controllers that define the cache memory again over multiple paths.

Abstract: A memory storage device has a file storage operating system which uses an inode to record and find segments of each data file. The inode includes a plurality of rows. A portion of the rows are written with direct extents pointing to data blocks storing portions of file segments. At least two of the extents point to data blocks having addresses in different logical volumes.

Abstract: A memory storage device has a file storage operating system which uses an inode to record and find segments of each data file. The inode includes a plurality of rows. A portion of the rows are written with direct extents pointing to data blocks storing portions of file segments. At least two of the extents point to data blocks having addresses in different logical volumes.

Abstract: The data storage facility includes a plurality of data storage devices coupled through multi-path connections to cache memory. A plurality of interfaces to host processors communicates with the cache memory and with cache tag controllers that define the cache memory again over multiple paths.

Abstract: Improved connectors for optically coupling a fiber optic transmission line and an opto-electronic device electrically interfaced to a substrate. The improved connectors include the opto-electronic device being mounted on the substrate, such as a printed circuit board, and means for mounting the fiber optic transmission line to the substrate such that the operative axis of the opto-electronic device is substantially not coincidental with the light transmission axis of the fiber optic transmission line. The connectors also require light bending means in operative optical association with said opto-electronic device for directing along the light transmission axis of the fiber optic transmission line at least a portion of the light emitted from said opto-electronic device or for directing along the operative axis of said opto-electronic device at least a portion of the light emitted from said fiber optic transmission line.

Abstract: An improved electronic article security system is employed for detecting the presence of a security tag within a detection zone. The system includes a transmitter for generating electromagnetic energy and, in the disclosed embodiment, a single antenna for emitting electromagnetic energy received from the transmitter to establish an electromagnetic field within the detection zone and for sensing disturbances within the electromagnetic field, including disturbances resulting from a security tag within the detection zone. A receiver is provided for processing signals from the antenna relating to sensed disturbances and for providing output signals. A data processing and control section analyzes the output signals from the receiver and determines whether a sensed disturbance within the electromagnetic field is caused by the presence of a security tag within the detection zone.

Abstract: An optical fiber mounting device and method of installation and monitoring of a structure using the device. The device includes an optical fiber connected to a support sheet. The support sheet is readily adapted to be connected to a structure. The method of installation of the device includes affixing the support sheet to a structure. The fabricated structure is monitored by propagating light through the installed optical fiber and continuously monitoring the light to detect changes in temperature, pressure, stress and/or strain in the structure.

Abstract: An optical fiber mounting device and method of installation and monitoring of a structure using the device. The device includes an optical fiber connected to a support sheet. The support sheet is readily adapted to be connected to a structure. The method of installation of the device includes affixing the support sheet to a structure. The fabricated structure is monitored by propagating light through the installed optical fiber and continuously monitoring the light to detect changes in temperature, pressure, stress and/or strain in the structure.

Abstract: In a microprocessor-controlled evaporation/concentration system, a plurality of sample solutions are automatically successively delivered to an evaporation chamber. Each sample solution is evaporated in successively delivered slug components. The underside of the bottom wall is maintained at a microprocessor-determined constant evaporation temperature by an electrical resistance heater and proportional temperature controller. Pressure in the chamber is maintained substantially on the vapor pressure versus temperature curve of the sample solution, thereby assuring a known evaporation rate. Valving controlled by the microprocessor permits automatic addition of diluent to the chamber. The prepared sample is then automatically transferred to one of multiple storage vials which are brought into successive registration with a syringe needle assembly by means of a rotatable vial storage tray.