Abstract: An interactive computer-based training (ICBT) system operable over a computer network for training users. The ICBT system is provided with inter-dependent, state-machine-based hardware and software simulators for emulating hardware and software functionality associated with a piece of equipment on which the users are to receive interactive training. The state transition method effectuated in a computer-readable memory system includes the steps of: identifying a current state of the state machine wherein a transition is to be effectuated; determining if there is a state immediately prior to the current state, and if so, determining whether there is a dependency of the current state on the immediately prior state, the dependency being characterized as a first order dependency; inferring a reference value associated with the current state based on the first order dependency; and determining a future state of the state machine based on the inferred reference value.

Abstract: An output shaft and attachment combination and a power tool incorporating the combination are disclosed. The output shaft has a first diameter portion, a second diameter portion, and a drive portion located between the first and second diameter portions. The attachment has a first cylindrical bore, a second cylindrical bore, and a driven bore located between the first and second cylindrical bores. The first cylindrical bore and the second cylindrical bore have inner diameters sized to receive outer diameters of the first diameter portion and the second diameter portion, respectively. The driven portion is configured to engage the drive portion.

Abstract: An interactive computer-based training (ICBT) system and method operable over a computer network for training users. The ICBT system is provided with a state-machine-based hardware simulator for emulating various hardware states associated with a piece of equipment on which the users are to receive interactive training. A software simulator provided as a command inference engine is coupled to the hardware simulator, wherein the software simulator allows the users to interactively interrogate the emulated piece of equipment for its software functionality. One or more independently selectable learning modules are provided as part of the ICBT system, wherein each learning module includes one or more lesson plans related to the hardware and software functionality of the emulated piece of equipment. Also, the learning modules are inter-dependently associated with the hardware and software simulators.

Abstract: An ergonomically adjustable tool handle having a dual direction locking device including a modified swivel retaining plate having an external threaded portion and a corresponding modified jam nut which is threaded to receive the external threads of the retaining plate. A retrofit kit incorporating the locking device optionally includes an anchor bolt having a predetermined length for installation on a conventional tool handle.

Abstract: A spring loaded guard is provided to limit access to a potential nip point formed between the rotating nut driver and its guide and wherein the guard extends beyond the guide housing a sufficient distance to engage the tubing for displacement of the guard for use in restricted access areas.

Abstract: A latching magnetic switch is utilized to activate a push to start nutrunner or the like wherein the magnetic latching switch is deactivated first by one magnetic pole and thereafter upon engagement with the work piece and compression of the spindle and opposite pole of the magnet is utilized to activate the tool.

Abstract: A separate thumb accessible pushbutton operated circuit revises the power operated tube nut wrench at a reduced speed to intercept a home stop wherein after the wrench is automatically shut off on the sensing of current rise in the motor on stall to avoid over stress and unnecessary heat buildup.

Abstract: Disclosed is a 360 degree viewable flexible light band which may be readily disposed on a power tool which permits ready viewing of tool function in terms of required communication to the operator. Construction of the light band makes it readily installable and replaceable in a tool recess which may be covered by a clear lens to permit viewing.

Abstract: An adjustable socket tray for visually displaying a socket for selection of the socket size and/or a fastener tightening strategy wherein the socket is restrained by a movable "V" block to retain the socket about a centerline incident with a sensor to determine the selection of the socket.