Abstract: Techniques are described herein for automatically selecting the compression techniques to be used on tabular data. A compression analyzer gives users high-level control over the selection process without requiring the user to know details about the specific compression techniques that are available to the compression analyzer. Users are able to specify, for a given set of data, a “balance point” along the spectrum between “maximum performance” and “maximum compression”. The point thus selected is used by the compression analyzer in a variety of ways. For example, in one embodiment, the compression analyzer uses the user-specified balance point to determine which of the available compression techniques qualify as “candidate techniques” for the given set of data. The compression analyzer selects the compression technique to use on a set of data by actually testing the candidate compression techniques against samples from the set of data.

Abstract: A tang engaging and stability structure has a tang engaging portion and a pair of stabilizing ear members spaced apart from one another in the direction of the pivot axis. The ear members are positioned on opposing sides of a rear end portion of the tang structure to restrict movement of the tang structure rear end portion generally in the axial direction of the pivot axis. During a torque applying operation, a force applied to the wrench body is transmitted as torque to a fastener removably engaged with the head and tends to pivot the casing structure relative to the drive structure about the pivot axis. When a torsional resistance offered by the fastener reaches a threshold level determined by the biasing force, the force being applied to the wrench body pivots the casing structure relative to the drive structure to the torque exceeded position to generate the torque exceeded signal.

Abstract: A torque wrench comprises a fastener drive structure having a head which may be removably engaged with a fastener, and a tang structure extending rearwardly from the head. A wrench body includes a casing structure. The drive structure and the casing structure are pivotally connected for pivotal movement relative to one another about a pivot axis from a normal position to a torque exceeded position to generate a torque exceeded signal. A tang engaging and stability structure has a tang engaging portion and a pair of stabilizing ear members spaced apart from one another in the direction of the pivot axis. The ear members are positioned on opposing sides of a rear end portion of the tang structure to restrict movement of the tang structure rear end portion generally in the axial direction of the pivot axis. The tang engaging portion is engaged with a rear end portion of the tang structure when the drive structure is in the normal position.