Patent ID: 6052837
Filing Date: 2000-04-25
Classification: A47K,E03D

Abstract:
A toilet ventilation system, for attachment to a toilet, comprising:(A) a seat defining an air channel in a lower surface;(B) an air channel cover, defining at least one slot, carried by the seat;(C) a hinge, pivotably supporting the seat;(D) a base having fastening means for attachment to a bowl of the toilet;(E) an enclosure, carried by the base, defining an air channel in communication with the air channel defined by the lower surface of the seat;(F) a fan housing, defining an air channel in communication with the air channel of the enclosure;(G) fan means, carried by the fan housing, for moving air from the air channel in the seat, and then into the air channel in the enclosure, and then into the air channel in the fan housing, and then exhausting the air; and(H) circuit means, comprising a microcontroller-based circuit in electrical communication with the fan means, for controlling the operation of the fan, the circuit means comprising:(a) switching means, in electrical communication with the fan means, for signaling the circuit means in response to weight carried by the seat;(b) delay circuit means, executed by the microcontroller-based circuit and in electrical communication with the fan means, for turning the fan off after a delay period;(c) manual air speed adjustment means, executed by the microcontroller-based circuit and in electrical communication with the fan means, for allowing adjustment of the speed of operation of the fan means, thereby manually providing an air speed target level for the fan means; and(d) air speed control means, executed by the microcontroller-based circuit and in electrical communication with the fan means, for automatically increasing or decreasing the speed of operation of the fan means substantially to maintain the manually selected air speed target level.