Abstract: A modular system, for delivering hot melt adhesive materials, comprises a modular metering assembly, having metering stations disposed therein, that is able to be attachably and detachably mounted upon a modular tank assembly. Alternatively, one or more of the metering stations may be disposed externally of the modular metering assembly, and alternatively still further, one or more additional modular metering assemblies may be attachably and detachably connected to the first modular metering assembly. Also disclosed is a closed-loop fluid pressure control system, for independently controlling the pressure of the hot melt adhesive material being conveyed to the metering devices, whereby the working pressures of the hot melt adhesive materials being conveyed to the metering devices can have different working pressures.

Abstract: A hot melt adhesive hose assembly has a hot melt adhesive hose core, and a pair of heater circuits wrapped around the external peripheral surface of the hose core. A first one of the heater circuits is electrically connected to the hose assembly electrical circuitry, and should a failure occur within the first one of the heater circuits, an electrical switch mechanism is actuated so as to effectively remove the first, failed heater circuit from the hose assembly electrical circuitry, and substantially simultaneously, electrically connect the second one of the heater circuits to the hose assembly electrical circuitry.

Abstract: A hot melt adhesive hose assembly comprises a heater circuit wrapped around an external surface portion of the hose assembly, a temperature sensor, and an elongated thermal fuse which is likewise wrapped around an external surface portion of the hose assembly such that successive spiral turns of the thermal fuse are effectively interposed between successive spiral turns of the heater circuit. The thermal fuse may be electrically connected in series with the heater circuit so as to effectively terminate electrical power to the heater circuit as a result of the melting of the thermal fuse, or alternatively, the thermal fuse may be electrically connected in series with the temperature sensor, so as to detect abnormal temperature levels at substantially any location throughout the length of the hose assembly.

Abstract: A new and improved hot melt adhesive hose assembly has a hot melt adhesive hose core, a pair of heater circuits wrapped around the external peripheral surface of the hose core, and a pair of temperature sensors also disposed in contact with the external peripheral surface of the hose core. A first one of the heater circuits is initially electrically connected to the hot melt adhesive hose assembly electrical circuitry, and in a similar manner, a first one of the temperature sensors is electrically connected to the hot melt adhesive hose assembly electrical circuitry.

Abstract: A hot melt adhesive material application system is disclosed wherein both the control module and the dispensing nozzle are effectively provided with internal alternative flow paths. A fixed orifice is internally incorporated within the dispensing nozzle such that when the hot melt adhesive material is not being supplied to the dispensing nozzle and its discharge orifice, the hot melt adhesive material can be recirculated through the dispensing nozzle and the control module in accordance with controlled backpressure parameters which correspond to the supply pressure which is characteristic of the hot melt adhesive material being supplied to the dispensing nozzle and its discharge orifice.

Abstract: A hot melt adhesive hose assembly comprises a heater circuit wrapped around an external surface portion of the hose assembly, a temperature sensor, and an elongated thermal fuse which is likewise wrapped around an external surface portion of the hose assembly such that successive spiral turns of the thermal fuse are effectively interposed between successive spiral turns of the heater circuit. The thermal fuse may be electrically connected in series with the heater circuit so as to effectively terminate electrical power to the heater circuit as a result of the melting of the thermal fuse, or alternatively, the thermal fuse may be electrically connected in series with the temperature sensor, so as to detect abnormal temperature levels at substantially any location throughout the length of the hose assembly.

Abstract: A module filter is mounted upon a module housing of a dispensing valve assembly at a position which is disposed substantially immediately upstream of the dispensing valve assembly nozzle, but at a position which is effectively offset from the longitudinal axis of the dispensing valve assembly nozzle, so as to not only be readily externally accessible, but in addition, the module filter is also effectively independent of the dispensing valve assembly nozzle such that the dispensing valve assembly nozzle does not have to be removed from the dispensing valve assembly in order to gain access to the module filter. The module filter may be secured within the dispensing valve assembly housing by an O-ring member, or alternatively, the module filter may be integral with the O-ring member.

Abstract: A modular system, for delivering hot melt adhesive materials, comprises a modular metering assembly, having metering stations disposed therein, that is able to be attachably and detachably mounted upon a modular tank assembly. Alternatively, one or more of the metering stations may be disposed externally of the modular metering assembly, and alternatively still further, one or more additional modular metering assemblies may be attachably and detachably connected to the first modular metering assembly. Also disclosed is a closed-loop fluid pressure control system, for independently controlling the pressure of the hot melt adhesive material being conveyed to the metering devices, whereby the working pressures of the hot melt adhesive materials being conveyed to the metering devices can have different working pressures.

Abstract: A hot melt adhesive material application system is disclosed wherein both the control module and the dispensing nozzle are effectively provided with internal alternative flow paths. A fixed orifice is internally incorporated within the dispensing nozzle such that when the hot melt adhesive material is not being supplied to the dispensing nozzle and its discharge orifice, the hot melt adhesive material can be recirculated through the dispensing nozzle and the control module in accordance with controlled backpressure parameters which correspond to the supply pressure which is characteristic of the hot melt adhesive material being supplied to the dispensing nozzle and its discharge orifice.

Abstract: A new and improved hot melt adhesive hose assembly comprises a hot melt adhesive hose core, a pair of heater circuits wrapped around the external peripheral surface of the hose core, and a pair of temperature sensors also disposed in contact with the external peripheral surface of the hose core. A first one of the heater circuits is initially electrically connected to the hot melt adhesive hose assembly electrical circuitry, and in a similar manner, a first one of the temperature sensors is electrically connected to the hot melt adhesive hose assembly electrical circuitry.

Abstract: A new and improved hot melt adhesive hose assembly comprises a hot melt adhesive hose core, a pair of heater circuits wrapped around the external peripheral surface of the hose core, and a pair of temperature sensors also disposed in contact with the external peripheral surface of the hose core. A first one of the heater circuits is initially electrically connected to the hot melt adhesive hose assembly electrical circuitry, and in a similar manner, a first one of the temperature sensors is electrically connected to the hot melt adhesive hose assembly electrical circuitry.