Abstract: Embodiments of encapsulated battery packs, control circuitry, and their methods of manufacture are described. In one such embodiment, a battery pack includes a plurality of electrochemical pouch cells and an elastomeric encapsulant that forms at least one external surface of the battery pack. In another embodiment, a battery pack includes a plurality of electrochemical pouch cells with a portion of an encapsulant disposed between the electrochemical pouch cells and the outer housing. In yet another embodiment, a method of controlling an operation of a system includes using a current threshold of one or more electrochemical cells determined at least in part on at least one of a temperature and a state of charge of the one or more electrochemical cells.

Abstract: Provided are systems and methods for enclosing an energy source of a material handling vehicle. The systems and methods include an enclosure having a front wall, a rear wall, and an interior compartment, an inlet channel integrally formed with the front wall and in fluid communication with the interior compartment, the air inlet channel defined by an inlet louver and an inlet flange, an outlet channel integrally formed with the rear wall and in fluid communication with the interior compartment, the air outlet channel defined by an outlet louver and an outlet flange, one or more energy source cells positioned within the interior compartment; and a cooling fan in fluid communication with the inlet channel and the interior compartment. The cooling fan operates to draw air through the inlet channel to the interior compartment such that air within the interior compartment is expelled out of the outlet channel.

Abstract: Embodiments of encapsulated battery packs, control circuitry, and their methods of manufacture are described. In one such embodiment, a battery pack includes a plurality of electrochemical pouch cells and an elastomeric encapsulant that forms at least one external surface of the battery pack. In another embodiment, a battery pack includes a plurality of electrochemical pouch cells with a portion of an encapsulant disposed between the electrochemical pouch cells and the outer housing. In yet another embodiment, a method of controlling an operation of a system includes using a current threshold of one or more electrochemical cells determined at least in part on at least one of a temperature and a state of charge of the one or more electrochemical cells.

Abstract: Embodiments of encapsulated battery packs, control circuitry, and their methods of manufacture are described. In one such embodiment, a battery pack includes a plurality of electrochemical pouch cells and an elastomeric encapsulant that forms at least one external surface of the battery pack. In another embodiment, a battery pack includes a plurality of electrochemical pouch cells with a portion of an encapsulant disposed between the electrochemical pouch cells and the outer housing. In yet another embodiment, a method of controlling an operation of a system includes using a current threshold of one or more electrochemical cells determined at least in part on at least one of a temperature and a state of charge of the one or more electrochemical cells.

Abstract: Provided are systems and methods for enclosing an energy source of a material handling vehicle. The systems and methods include an enclosure having a front wall, a rear wall, and an interior compartment, an inlet channel integrally formed with the front wall and in fluid communication with the interior compartment, the air inlet channel defined by an inlet louver and an inlet flange, an outlet channel integrally formed with the rear wall and in fluid communication with the interior compartment, the air outlet channel defined by an outlet louver and an outlet flange, one or more energy source cells positioned within the interior compartment; and a cooling fan in fluid communication with the inlet channel and the interior compartment. The cooling fan operates to draw air through the inlet channel to the interior compartment such that air within the interior compartment is expelled out of the outlet channel.

Abstract: A battery module in accordance with one or more embodiments includes a plurality of electrically connected battery cells and one or more heating devices in contact with each battery cell. Each of the heating devices includes one or more resistive heating elements configured for use in measuring and regulating temperature of the battery cells and for passively balancing electrical charge among battery cells.

Abstract: A control apparatus is provided for use in an electric vehicle having a throttle input device. The throttle input device is operable by a rider for generating a throttle signal for controlling the speed of the electric vehicle. The control apparatus, which adjusts the throttle signal, includes a rider input mechanism and a control device. The rider input mechanism can be manipulated by the rider to provide a given input. The control device is coupled to the rider input mechanism and to the output of the throttle input device. The control device adjusts the throttle signal based on the given input provided by the rider input mechanism.

Abstract: A control apparatus is provided for use in an electric vehicle having a throttle input device. The throttle input device is operable by a rider for generating a throttle signal for controlling the speed of the electric vehicle. The control apparatus, which adjusts the throttle signal, includes a rider input mechanism and a control device. The rider input mechanism can be manipulated by the rider to provide a given input. The control device is coupled to the rider input mechanism and to the output of the throttle input device. The control device adjusts the throttle signal based on the given input provided by the rider input mechanism.

Abstract: A longitudinal balance test circuit connects to the tip and ring lines of a pair of telephone wires. It also connects to a shield conductor that extends with the tip and ring lines. The test circuit includes a transformer which has two windings. One winding connects to the tip and ring lines, and it also connects to the shield conductor. The other winding connects to a signal generator that provides an alternating current test voltage with which to test longitudinal balance of the tip and ring lines. A method of testing a telephone line for longitudinal balance comprises: measuring an alternating current test signal applied to a telephone line under test; measuring stressed noise of the telephone line in response to the applied. alternating current test signal; calculating, in response to the measured alternating current test signal and the measured stressed noise, an adjusted value related to longitudinal balance regardless of the length of the telephone line under test; and displaying the adjusted value.

Abstract: A telephone technician's remote assist apparatus connects into a telephone line to be tested by the technician from a remote location. Control signals are sent from the remote location to the remote assist apparatus over the same pair of wires of the telephone line under test. A particular control signal encoding includes two consecutive leading star (**) dual-tone multi-frequency tones. The remote assist apparatus opens the telephone line in response to at least one control signal, and the apparatus preferably automatically restores the line after a predetermined time so that the subscriber is not left disconnected. The particular control signal encoding and the automatic restoring features can be implemented without using the same pair of wires under test.

Abstract: A system and method for providing wireless access to a telephone line of a telephone network utilize a mobile terminal and a crossconnect base station. The mobile terminal transmits a radio frequency signal carrying a telephone communication. The crossconnect base station connects to a telephone line at a crossconnect box of a telephone network, receives the radio frequency signal carrying a telephone communication, and communicates the telephone communication over a connected telephone line.

Abstract: The equipment includes a front panel with LED indicators, key pad and a number of special function keys as well as an LCD message printout and volt/ohm meter. A hand set is readily available at the front panel as the line check unit functions with a commercially available craft terminal, a CMC Type 7910D terminal known as DATASTAR.TM., which includes the master central processing unit and random access memory for interactive function with the line check system. The DATASTAR.TM. unit communicates directly with a controller section that includes speaker power amp, LCD circuitry and 128K random access memory as well as a digital bus interface. The controller board is then connected through both a digital bus and an analog signal bus to an analog circuitry that includes relay control and various signal routing and test signal functions. The analog circuitry is then in communication with the volt/ohm meter and analyzer circuitry.

Abstract: An apparatus and method for testing voltage arresters and current shunting circuits within a telephone circuit protector are described. A typical protector tested by the apparatus and method includes two voltage arresters and two current limiting circuits. One set of a voltage arrester and a current limiting circuit are tested for voltage breakdown, continuity and ground faults by actuation of a single test operating switch. The other voltage arrester and current limiting circuit are then selected and tested by a single actuation of the test operating switch. Breakdown voltage, continuity, ground fault and low battery visual indicators are provided.

Abstract: Apparatus for connecting in series a plurality of communication line pairs, typically direct connected security loops used by alarm companies for monitoring customer's facilities. A bridge with pairs of bridge terminals and switches for connecting bridge terminal pairs to communication line pairs or to terminating lines. Local and remote control for the switches and control apparatus which permits service personnel to selectively terminate a bridge terminal pair with a direct or zero resistance connection line and leave a subscriber's communication line open, for maintaining service for other communication lines connected to the bridge while performing maintenance on the disconnected line. The apparatus is suitable for bridges with various numbers of terminals, such as six way, eight way and twelve way.

Abstract: Apparatus for interconnecting a plurality of communication line pairs, typically voice frequency lines of the telephone type. A passive resistance bridge with pairs of bridge terminals and switches for connecting bridge terminal pairs to communication line pairs or to terminating resistors. Local and remote control for the switches and control apparatus which permits service personnel to selectively terminate a bridge terminal pair with a fixed resistor and leave a subscriber's communication line open, for maintaining service for other communication lines connected to the bridge while performing maintenance on the disconnected line. The apparatus is suitable for two wire and for four wire systems and for resistance bridges with various numbers of terminals, such as six way, eight way and twelve way.

Abstract: An apparatus for remotely testing electrical circuits, such as telephone circuits, includes a stand-alone unit which is located in the end office, for example, for remote access by use of an ordinary push-button telephone set sending dual tone multiple frequency signals. The apparatus has a twin-bus structure wherein one of the busses is an analog bus through which the telephone link is made and over which analog test signals are communicated; the other bus is a digital bus for communicating digital control and data signals with a microcomputer included within the apparatus. Operating between the two busses are suitable interface circuits for receiving the control signals from the telephone set and for communicating the analog test signals to a selected electrical circuit to be tested. The analog test signals are generated by an analog test signal circuit also connected between the analog and digital busses.

Abstract: Method and apparatus for testing pairs of conductors of a telephone cable, including method and apparatus for measuring the capacitance of a circuit component such as a pair of conductors. The capacitance of each of twenty-five pairs of conductors of a cable is measured and the capacitance value is stored, the median value of capacitance is identified and stored, each measured capacitance value is compared with the median value, and an out-of-limits indication is made when a measured capacitance value deviates from the median value by more than a predetermined limit. Capacitance is measured by connecting the circuit component, such as a pair of conductors, in the timing circuit of a monostable multivibrator, charging and discharging the timing circuit to vary the elapsed time of the on output of the multivibrator. The multivibrator controls the output of an oscillator and the oscillator output pulses are counted, with the count total varying as a function of the capacitance of the conductor pair.

Abstract: An automatic telephonic message transmission apparatus is disclosed which includes a base station and preferably a remote unit for receiving inputs indicative of various operator emergency conditions and for thereupon automatically sequentially dialing a plurality of preselected telephone numbers, and for thereupon transmitting aural messages indicative of the alarm condition. The apparatus includes solid state memories for storing a digital representation of aural messages, keyboard for inputting information such as selected telephone numbers, alarm times, etc., and a controller for acting on the input signals and keyboard entered data for controlling the automatic dialing operations.