Abstract: A firefighting nozzle is provided with a relief valve assembly that opens to discharge a fine spray or “curtain” of liquid extending 360° around the nozzle, thus cooling off the nozzle operator and the surrounding area, while at the same preventing dangerous pressure build-up in the nozzle. In a preferred embodiment, the relief valve assembly comprises a housing having a substantially cylindrical side wall defining a bore. A tubular sleeve divides the bore into two parts: a cylindrical inner passage defining the primary flow path for liquid traveling through the nozzle; and an annular space defining a valve chamber. A plurality of relief ports is formed in a 360° degree pattern around the side wall of housing, each relief port defining a secondary flow path extending substantially perpendicularly to the primary flow path. An annular plug is mounted for sliding movement on the inner sleeve, from a first position blocking the relief ports to a second position allowing flow therethrough.

Abstract: A cargo truck ramp load assist system comprises a hand truck engagement device disposed in a longitudinal slot in a cargo truck ramp, a first actuator coupled to the hook operable to effect displacement of the hand truck engagement device along the longitudinal slot in the ramp, a remote controller coupled to a hand truck and equipped with a first radio transceiver, a second radio transceiver coupled to the first actuator operable to receive directional/speed control signals from the remote controller, and the hand truck engagement device operable to engage the hand truck and the first actuator effecting displacement of the hand truck engagement device up and down the ramp in response to the directional/speed control signals to facilitate the hand truck going up and down the ramp.

Abstract: A combination scene lighting and traffic control system includes a scene illumination apparatus for illuminating an emergency scene, and a detachable adapter for converting the illumination apparatus into a traffic light. The scene illumination apparatus includes at least two separately actuatable lighting elements within a tripod-mounted housing. A control device allows simultaneous actuation of both lighting elements when maximum illumination is desired or actuation of a single element if less illumination is desired. The adapter holds two different colored filters, each of which overlies a different one of the lighting elements when the adapter is secured to the illumination apparatus, so that one colored light will be visible to approaching motorists when a first of the lighting elements is actuated and a different colored light will be visible when a second of the lighting elements is actuated.

Abstract: A sleeve keeper bracket for use with a wrist accessory worn by a user comprises a first member coupled to the wrist accessory, and a second member coupled to the first member and adapted to extend away from the wrist accessory and adapted to retain a long sleeve of a garment worn by the user from obscuring the wrist accessory.

Abstract: A sleeve keeper watch bracket for use with a wristwatch worn by a user, comprises a first member having a shape and size generally corresponding to a case of the wristwatch, the first member generally lying in a first plane, a second member generally lying in a second plane parallel to and above the first plane, a third member coupling the first member and second member, and wherein the first member is affixed to the wristwatch case and the second member extends away from the user's hand and is adapted to hold back a long sleeve of a garment worn by the user.

Abstract: An audio command system is provided which allows multiple sets of spoken instructions or commands to be stored in a digital memory and later broadcast to workers in various environments. The system includes a transducer, an analog-to-digital converter, and a voice memory. A control unit is provided for selecting a desired set of commands to be accessed from the voice memory and broadcast to the workers. A method of supervising workers using the audio command includes the steps of converting a plurality of sets of spoken commands into a plurality of sets of digital signals, storing each set of digital signals in a unique location in a memory device, selecting an operation to be performed, accessing the set of stored digital signals corresponding to the selected command set, converting the digital signals corresponding to the selected operation back into spoken commands, and broadcasting the spoken commands to the at least one worker.

Abstract: A vehicle-mounted warning light system comprises a housing containing a central light surrounded by several sets of outer lights. A controller is programmed to light the central first, and then each set of outer lights in sequence, while at the same time increasing the intensity of the lights, so that the system appears to an observer to be a single light that is getting bigger and brighter. This creates the illusion that the vehicle is travelling toward the observer faster than it actually is, thus prompting the observer to quickly yield right-of-way.

Abstract: A lighting system for use with an emergency vehicle comprises at least one elongated lighting bar mounted to an exterior surface of the emergency vehicle, the lighting bar comprises a plurality of lighting elements operable to emit light, the at least one lighting bar operable to be placed in a first substantially horizontal lowered position and a second substantially vertical raised position, and a controller electrically coupled to the at least one lighting bar and configured to receive user input and controllably place the at least one lighting bar in one of a raised and lowered positions in response to the user input, the controller further configurable to operate the plurality of lighting elements in a predetermined repeating on/off sequence involving increasing number of lit lighting elements and increasing light intensity over time.

Abstract: A combination scene lighting and traffic control system includes a scene illumination apparatus for illuminating an emergency scene, and a detachable adapter for converting the illumination apparatus into a traffic light. The scene illumination apparatus includes at least two separately actuatable lighting elements within a tripod-mounted housing. A control device allows simultaneous actuation of both lighting elements when maximum illumination is desired or actuation of a single element if less illumination is desired. The adapter holds two different colored filters, each of which overlies a different one of the lighting elements when the adapter is secured to the illumination apparatus, so that one colored light will be visible to approaching motorists when a first of the lighting elements is actuated and a different colored light will be visible when a second of the lighting elements is actuated.

Abstract: A pumping apparatus comprising an engine-driven primary pump and a discharge system is provided with a hydraulically driven additive injection system. The additive injection system includes at least one vessel containing an additive, a delivery conduit for transporting the additive from the vessel to the discharge system, and an additive pump for pumping the additive from the vessel to the discharge system via the delivery conduit. The additive pump is preferably a centrifugal pump driven by a hydraulic turbine mounted within the discharge system downstream of the primary pump.

Abstract: A lighting system for use with an emergency vehicle comprises at least one elongated lighting bar mounted to an exterior surface of the emergency vehicle, the lighting bar comprises a plurality of lighting elements operable to emit light, the at least one lighting bar operable to be placed in a first substantially horizontal lowered position and a second substantially vertical raised position, and a controller electrically coupled to the at least one lighting bar and configured to receive user input and controllably place the at least one lighting bar in one of a raised and lowered positions in response to the user input, the controller further configurable to operate the plurality of lighting elements in a predetermined repeating on/off sequence involving increasing number of lit lighting elements and increasing light intensity over time.

Abstract: A dryer system for a firefighting ensemble comprising a housing having an air intake port and an air outlet port, a forced air assembly including a heater and a blower accommodated within the housing, a plurality of flexible porous hose segments coupled to the air outlet port operable to receive and conduct forced air therefrom, and the plurality of flexible porous hose segments are operable to conduct forced heated air into elements of the firefighting ensemble to speed drying.

Abstract: A firefighting apparatus comprising a controller, and a hydraulic pump driven by a power-take-off and operable to supply a hydraulic fluid under pressure. A water pumping subsystem is powered by the hydraulic fluid and operable to supply water under pressure to a conduit, wherein a flow rate of water is substantially regulated by controlling the hydraulic fluid input to the water pumping subsystem. A chemical foam subsystem is powered by the hydraulic fluid and operable to inject foam at a predetermined flow rate into the conduit, wherein the flow rate of the foam is substantially regulated by controlling the hydraulic fluid input to the chemical foam subsystem. An electrical power generator subsystem is powered by the hydraulic fluid and operable to generate electrical power, wherein the frequency and voltage of the generated power is substantially regulated by controlling the hydraulic fluid input to the electrical power generator subsystem.

Abstract: A cargo truck ramp load assist system comprises a hand truck engagement device disposed in a longitudinal slot in a cargo truck ramp, a first actuator coupled to the hook operable to effect displacement of the hand truck engagement device along the longitudinal slot in the ramp, a remote controller coupled to a hand truck and equipped with a first radio transceiver, a second radio transceiver coupled to the first actuator operable to receive directional/speed control signals from the remote controller, and the hand truck engagement device operable to engage the hand truck and the first actuator effecting displacement of the hand truck engagement device up and down the ramp in response to the directional/speed control signals to facilitate the hand truck going up and down the ramp.

Abstract: A dryer system for a firefighting ensemble comprising a housing having an air intake port and an air outlet port, a forced air assembly including a heater and a blower accommodated within the housing, a plurality of flexible porous hose segments coupled to the air outlet port operable to receive and conduct forced air therefrom, and the plurality of flexible porous hose segments are operable to conduct forced heated air into elements of the firefighting ensemble to speed drying.

Abstract: A system comprises a plurality of temperature sensors adapted to measure the temperature at various locations on a firefighter's turnout gear and helmet, and operable to generate temperature measurements, a microcontroller configured to receive the temperature measurements from the plurality of temperature sensors, and to analyze the temperature measurements and determine the temperature status of the firefighter's environment, a visual interface in communication with the microcontroller and configured to provide a visual indication of the firefighter's temperature status, an audible alert device in communication with the microcontroller and configured to provide an audible alert of the firefighter's temperature status, and a command center configured to receive the temperature measurements and the temperature status from the microcontroller, and to display this information.

Abstract: A firefighting nozzle is provided with a relief valve assembly that opens to discharge a fine spray or “curtain” of liquid extending 360° around the nozzle, thus cooling off the nozzle operator and the surrounding area, while at the same preventing dangerous pressure build-up in the nozzle. In a preferred embodiment, the relief valve assembly comprises a housing having a substantially cylindrical side wall defining a bore. A tubular sleeve divides the bore into two parts: a cylindrical inner passage defining the primary flow path for liquid traveling through the nozzle; and an annular space defining a valve chamber. A plurality of relief ports is formed in a 360° degree pattern around the side wall of housing, each relief port defining a secondary flow path extending substantially perpendicularly to the primary flow path. An annular plug is mounted for sliding movement on the inner sleeve, from a first position blocking the relief ports to a second position allowing flow therethrough.

Abstract: A control system for driving a motor that operates a valve comprises an open control switch operable to generate a first input signal in response to manual activation, a close control switch operable to generate a second input signal in response to manual activation, and a feather control switch operable to generate a third input signal in response to manual activation. The system further comprises a microcontroller operable to generate a feathered control signal in response to receiving a third signal and one of a first and second input signals substantially simultaneously, the feathered control signal operable to cause the drive motor to change the setting of the discharge valve at a feathered speed.

Abstract: A water supply control system for use with a fire hydrant comprises a four-way valve assembly having a first inlet port for coupling to a nozzle of the fire hydrant via a fire hose, the four-way valve assembly operable to selectively open and close the inlet and outlet ports according to an operating mode of the four-way valve assembly, a stable and sturdy platform substantially supporting the weight of the four-way valve assembly, a flexible tether strap secured to the platform at a first end and having a fastener at a second end for releasably coupling to the fire hydrant, a status indicator mounted on the four-way valve assembly operable to provide a visual indication of the operation mode of the four-way valve assembly, and a scene light mounted on the four-way assembly operable to provide high-intensity illumination.

Abstract: A control system comprises a central controller adapted to receive user input and commands, and in communication with a plurality of remote sensors adapted to detect various vehicular parameters: water pressure, water level, water flow rate, engine speed, pump speed, etc., and firefighter parameters: air tank level, air flow rate, body temperature, respiration rate, O2 saturation level, ambient temperature, and presence of hazardous chemicals and radiation. The system further comprises a plurality of remote actuators adapted to receive commands from the central controller and automatically carry out an operation in response to the received command. A wireless communication subsystem is adapted to receive and transmit sensed parameters from the plurality of remote sensors to the central controller, and transmit user input and commands from the central controller to the plurality of remote actuators. A central display screen is adapted to present sensed parameters and warnings.