An indicator assembly is mounted medially between the forward and rear wheels to each side of a trailer assembly of a typical multi-axle trailer. The assembly includes a switch assembly mounted between forward and rear springs of a respective forward and rear axle of the trailer, wherein the switch assembly is operatively associated with a switch actuator mount to include a forward and rear magnet, wherein the switch assembly is actuated upon deflection to one of the forward or rear magnets upon...

A system for melting thermoplastic material and supplying the molten material under pressure and at a controlled temperature to one or more applicators. The material is melted in a melting tank and pumped from there through a filter into a manifold for distribution. The pump is a single piston, double acting, sealless pump and is driven by an air motor including appropriate air valves and valve controls. From the manifold the molten material is distributed to one or more heated, insulated hoses,...

A tire low pressure audio warning device for monitoring a tire for low air pressure and sounding an alarm when a low tire pressure condition exists. The tire low pressure audio warning device has a body that attaches to a valve stem of an inner tube or tubeless tire, or to an opening through a rim of the tire. Contained within the body is at least a low air pressure switch, a battery and an audio alarm. The low pressure switch is in air communications with the pressurized air within the tire or ...

An apparatus for detecting dangerous deflation of automobile tires and for signaling the existence of the deflation. A sensor in the form of an inductance device is positioned at a fixed distance from the axis of rotation of the wheel. A metallic annulus is carried within the tire casing and is moved away from the sensor to change the reactance of the inductance when the tire is dangerously deflected. The change of inductance is used to operate a relay for operating a signaling device.

A tire condition monitoring system monitoring a condition of a tire attached to a tire wheel, includes a tire side communication device mounted on the tire wheel for detecting an inner pressure of the tire and transmitting a result of detection by electromagnetic waves, a vehicle-body side communication device provided on a vehicle body including a plurality of components for receiving by electromagnetic waves information transmitted by the tire side communication device, a tire side modulator p...

A method for monitoring tire pressure of a system is disclosed. The method includes the steps of detecting a signal other than that of an in-use tire pressure signals and in response to the detection of the signal, maintaining the proper reception of the in-use tire pressure signals by a receiver.

A sunken condition of a vehicle provided with a sensor for measuring air pressure inside a tire, a communication device that carries out wireless communications between a vehicle main body and a tire, a steering torque sensor that measures steering torque, a sensor for measuring rotary speeds of driver and follower wheels of the vehicle or a navigating apparatus including a global positioning system and a dead-reckoning device is detected by a detector having a controller without requiring a sen...

To eliminate any mis-learning of a sensor code in a factory environment due to adjacent vehicles, a vehicle ID is sent to a sensor transmitter by an initiation signal. When the sensor transmitter transmits its sensor identification signal to the vehicle control in a "learn" mode, the vehicle ID received in the initiation signal is carried with a combined signal. The vehicle control receives the combined signal, and if the received vehicle identification code in the signal matches an expected veh...

A communication control unit controls data transmission and reception between a terminal and a communication network which includes a full duplex communication path, and a communication is made by transmitting a sending signal which includes a destination address of a destination terminal and transmitting a returning signal when the destination address is confirmed. The communication control unit comprises a first part for timing a first time from a start of a transmission, timing a second time ...

A pressure gauge includes an alarm generating device which is actuated by a modified pressure indicating stick upon detection of an insufficient or overinflated pressure condition within a tire. The pressure checking operation is possible even if there is inadequate surrounding light and the gauge can be checked without the need for reading the pressure indicating stick or an associated scale dial.