Abstract: This invention generally relates to enlarging a hole in a substrate such that the enlarged hole is centered on the existing hole. A knock-out punch and die tool for enlarging a knock-out hole in an electrical box includes a punch; a generally cup shaped die; a threaded central shaft supporting the punch on one end and the die on the other end; a removable centering element placed in a cup portion of the die; and a resilient element, such as a spring, urging the centering element in an axial direction along a length of the shaft outwardly of the cup portion. The centering element and the spring may be provided as a retrofitting kit for converting non-centering punch and die tools into centering punch and die tools.

Abstract: A wireless network access point with an integrated sensor to sense and receive input unrelated to control of or data transmitted via the wireless network access point.

Abstract: Method and apparatus for removing residual magnetization in a data transducer, such as a recording head used to write data to a recording medium in a data storage device. A residual magnetization sense circuit senses a residual magnetization of a pole of the data transducer as a result of the application of a data transmission current to the transducer. A demagnetization current generator removes the residual magnetization by supplying the transducer with a demagnetizing current that decreases to a final magnitude in accordance with a selected profile. The demagnetization current preferably comprises a bi-directional, time varying current of selected frequency to the transducer that tapers linearly, exponentially or in a step-wise fashion to the final magnitude. The demagnetization profile is preferably continuously adapted during operation.

Abstract: A cover plate for a switch, receptacle or outlet device of a wall is provided with a first plate member having a forward surface. A second plate member is coupled to the first plate member and overlays the forward surface of the first plate member. The second plate member has a different configuration from that of the first plate member so that at least a portion of the forward surface of the first plate member is exposed. The second plate member is visibly distinct from the first plate member. At least one of the first and second plate members has an opening to facilitate access of the device of the wall when the cover plate is mounted thereto.

Abstract: An ejector assembly is provided. The ejector assembly is detachably coupled to a circuit board to allow the circuit board to be locked in a chassis and separated from the chassis. The ejector assembly comprises a base portion and a locking portion. The base portion is rotatably coupled to the circuit board via a connector. The locking portion is capable of locking the circuit board into place when the ejector assembly is moved from a first position to a second position while the circuit board is in the chassis. In an alternative embodiment, the ejector assembly further comprises a holder to hold a number of cables.