Abstract: A coffee maker efficiently automates the process of pour-over coffee brewing by employing a computer system that controls how and when hot water is dispensed into a coffee filter. The computer system controls a mechanism that pulls a nozzle back and forth along a linear track, and rotates the linear track. A user generally puts a coffee filter in place and then pushes a button on the computer system once to allow the system to wet the coffee filter. Then the user could put coffee grounds into the coffee filter and push the button again to allow the system to lightly wet the surface of the coffee grounds. The user could then place the coffee cup underneath the filter and push the button a third time to allow coffee to be slowly brewed as spirals of hot water are dispensed on the coffee grounds.

Abstract: A coffee maker efficiently automates the process of pour-over coffee brewing by employing a computer system that controls how and when hot water is dispensed into a coffee filter. The computer system controls a mechanism that pulls a nozzle back and forth along a linear track, and rotates the linear track. A user generally puts a coffee filter in place and then pushes a button on the computer system once to allow the system to wet the coffee filter. Then the user could put coffee grounds into the coffee filter and push the button again to allow the system to lightly wet the surface of the coffee grounds. The user could then place the coffee cup underneath the filter and push the button a third time to allow coffee to be slowly brewed as spirals of hot water are dispensed on the coffee grounds.

Abstract: A system for monitoring tire pressure and producing a first signal in the event that a low tire pressure condition has been sensed and a second, different signal in the event that a low tire pressure condition has not been sensed and a third signal in the event that the system is not operable. The system comprises a sensor for each tire and an associated transceiver antenna coil. Each sensor comprises a pressure switch and a circuit that has a first resonant frequency when the pressure switch is in a first state and a second, different resonant frequency when the switch is in a second state. An excited circuit associated with each transceiver antenna coil generates an AC electromagnetic field across the transceiver antenna coil and a detector circuit is operable to demodulate information communicated passively by the sensor that reflects its resonant frequency.

Abstract: A system for monitoring tire pressure and producing a first signal in the event that a low tire pressure condition has been sensed and a second, different signal in the event that a low tire pressure condition has not been sensed and a third signal in the event that the system is not operable. The system comprises a sensor for each tire and an associated transceiver antenna coil. Each sensor comprises a pressure switch and a circuit that has a first resonant frequency when the pressure switch is in a first state and a second, different resonant frequency when the switch is in a second state. An excited circuit associated with each transceiver antenna coil generates an AC electromagnetic field across the transceiver antenna coil and a detector circuit is operable to demodulate information communicated passively by the sensor that reflects its resonant frequency.