Hand Dryer with Point of Ingress Dependent Air Delay and Filter Sensor
AssigneeBtadley IP, LLC
InventorsGraeme S. Bayley, Mark A. Figurski
Life of this patent
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Abstract
A lavatory system includes a hand dryer with at least a first proximity sensor and a second proximity sensor to detect an object for drying. A controller is communicatively linked to the first and second proximity sensors. The controller activates a drying operation after a first delay period if the first proximity sensor first detects the object for drying and activates a drying operation after a second delay period if the second proximity sensor first detects the object for drying. A filter flow sensor may also be provided to ensure proper filtering of the dryer's air.
Claims20
A hand dryer comprising:
- first and second proximity sensors operative to detect presentment of an object for drying;
- and
- a controller communicatively linked to the first and second proximity sensors, and wherein the controller commences activation of a drying operation after a first delay period if the first proximity sensor first detects the object for drying and commences activation of a drying operation after a second delay period if the second proximity sensor first detects the object for drying.
A lavatory system comprising:
- a wash basin;
- a faucet operably connected to the wash basin;
- a hand dryer in fluid communication with the wash basin and including a hand-receiving cavity, a top portion with an air outlet, and a bottom portion with an air outlet, the hand-receiving cavity having first and second points of entry;
- a blower motor in fluid communication with the air outlets for blowing air through the air outlets;
- and
- a controller that activates the blower motor after observance of a first delay period if an object to be dried is presented to the hand-receiving cavity at the first point of entry and activates the blower motor after observance of a second delay period if an object to be dried is presented to the hand-receiving cavity at the second point of entry.
A method of supplying drying air to drying chamber having first and second points of ingress, comprising:
- iteratively scanning a first detection zone including the first point of ingress;
- iteratively scanning a second detection zone including the second point of ingress;
- supplying air with a first delay if an object is detected in the first detection zone;
- and
- supplying air with a second delay if an object is detected in the second detection zone, wherein the second delay is greater than the first delay period.
Dependencies are inferred from the claim text.