Abstract: A voltage reference selector, used in conjunction with a multi-meter, allows user selection of a reference voltage used by the multi-meter from three different reference voltages of an electrical control panel when taking electrical measurements from the electrical control panel via the multi-meter. A portable voltage reference selector is electrically connected to a multi-meter and temporarily electrically connected to voltage reference points of an electrical control panel for taking electrical measurements from the control panel with the multi-meter. In this form, a test lead from the multi-meter obtains electrical measurements from the control panel. A permanent voltage reference selector is permanently connected to voltage reference points of an electrical control panel and is electrically connectable to a multi-meter for taking electrical measurements from the control panel with the multi-meter.

Abstract: A voltage reference selector, used in conjunction with a multi-meter, allows user selection of a reference voltage to be used by the multi-meter from three different reference voltages of an electrical control panel when taking electrical measurements from the electrical control panel via the multi-meter. A portable voltage reference selector can be carried with and electrically connected to a multi-meter and be temporarily electrically connected to voltage reference points of an electrical control panel for taking electrical measurements from the electrical control panel with the multi-meter. In this form, a test lead from the multi-meter is used to obtain electrical measurements from the electrical control panel. A permanent voltage reference selector is permanently connected to voltage reference points of an electrical control panel and is electrically connectable to a multi-meter for taking electrical measurements from the electrical control panel with the multi-meter.

Abstract: An electrical test lead for use with a multi-meter has a fuse assembly adapted to releasably hold a fuse in-line of the electrical wire connecting ends of the electrical test lead. The fuse assembly may be permanently attached to the electrical test leads or may be releasably attached at one or both ends thereof to electrical test lead sections. The fuse assembly includes a fuse holder that is preferably clear to see the replaceable fuse therein in order to determine whether the fuse has blown. The electrical test lead has a fuse assembly holding a replaceable fuse electrically connected to and situated between a first test lead section terminating in a test lead plug that is adapted to be received in a test lead receptacle of a multi-meter and a second test lead section terminating in one of an electrical test probe and a test lead receptor adapted to receive a test lead tool.

Abstract: An electrical test lead probe for use with a multi-meter provides for releasable retention in and electrical contact with a terminal of an industrial terminal block. The test lead probe includes a self-adjoining electrically conducting tip that is configured for automatic releasable receipt into a terminal block socket of various styles of terminal blocks, the terminal block socket housing a terminal of the terminal block. The present terminal block probe, in one form, is permanently attached to a multi-meter test lead. In another form, the present terminal block probe is coupled to a modular multi-meter test lead. In yet another form, the present terminal block probe has a removable head incorporating an electrically conducting, self-adjoining tip wherein the body is permanently attached to a multi-meter test lead.

Abstract: An electrical test lead probe for use with a multi-meter provides for releasable retention in and electrical contact with a terminal of an industrial terminal block. The test lead probe includes a shortened body having an electrically conducting tip that is configured for releasable receipt into a terminal block socket of an industrial terminal block, the terminal block socket housing a terminal of the terminal block. The present terminal block probe, in one form, is permanently attached to a multi-meter test lead. In another form, the present terminal block probe is coupled to a modular multi-meter test lead. In yet another form, the present terminal block probe has a removable head incorporating an electrically conducting tip wherein the body is permanently attached to a multi-meter test lead.

Abstract: An electrical test lead for use with a multi-meter has a fuse assembly adapted to releasably hold a fuse in-line of the electrical wire connecting ends of the electrical test lead. The fuse assembly may be permanently attached to the electrical test leads or may be releasably attached at one or both ends thereof to electrical test lead sections. The fuse assembly includes a fuse holder that is preferably clear to see the replaceable fuse therein in order to determine whether the fuse has blown. The electrical test lead has a fuse assembly holding a replaceable fuse electrically connected to and situated between a first test lead section terminating in a test lead plug that is adapted to be received in a test lead receptacle of a multi-meter and a second test lead section terminating in one of an electrical test probe and a test lead receptor adapted to receive a test lead tool.

Abstract: In certain embodiments, a method for modeling interactions with a computer system includes collecting interaction information for each of a number of interaction sessions with a computer system, each interaction session being associated with a corresponding agent system and including one or more states and one or more state transitions. The interaction information for an interaction session includes data for the one or more states and the one or more state transitions of the interaction session. The method further includes, for each of the interaction sessions, identifying the one or more states encountered during the interaction session based on the collected interaction information and generating, based on the one or more states encountered during the interaction session, a trace of the interaction session. The method further includes generating, based on the traces of the interaction sessions, a model of the interaction sessions, the model including the traces for each of the interaction sessions.

Abstract: A terminal block probe for taking electrical current measurements through an isolating terminal block by a multi-meter includes a tip configured as an isolating terminal block pin corresponding to the isolating terminal block pin of the particular isolating terminal block under test. This allows the probe to be releasably held by the terminal block for hands free testing. The probe tip includes two conductors adapted for contact with the isolating pin terminals of the terminal block. The terminal block probe includes a socket that releasably receives a plug of a multi-meter cable. Internal wiring of the probe extends from the socket and connects with the two conductors of the tip. When the plug of the multi-meter cable is received within the socket, the conductors of the tip are in electrical continuity with the wires of the multi-meter cable and thus the multi-meter.

Abstract: The present invention includes a trencher assembly with a motor that directly drives a sprocket through the rotation of a shaft of the motor. The rotation of the sprocket drives both a digging chain and an auger assembly simultaneously. The ability to use a motor to directly drive the sprocket decreases the components necessary for a drive train of the trencher assembly to promote a compact design. This occurs because the sprocket is able to drive both the digging chain and auger assembly through the transfer of driving forces from the motor without any intermediate gearing, belts, rotating support structure, and the like.

Abstract: A windshield wiper assembly includes a wiper arm carrying a windshield wiper blade, an arm head, and a pivot attaching the wiper arm to the arm head. A spring retainer and coil spring extends between the arm head and the arm, thereby biasing the wiper blade against the windshield. When the wiper arm is lifted off the windshield to a hold off position, the spring retains the wiper blade in the hold off position. A finger extending from the spring retainer engages a shoulder on a drive drum which is received in a socket in the arm head. Accordingly, the wiper assembly is automatically released from the driving mechanism when the wiper assembly is moved to the inactive or hold off position. The wiper assembly can then be removed from the vehicle, which facilitates changing of the wiper blade.