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US 7,554,084 B2Granted
Automated dispenser
AssigneeSCA Hygiene Products AB
InventorsKin Lun Mok, King Lung Mok, Hong Ng
Life of this patent
Estimating the term…
Abstract
An automatic dispenser for dispensing lengths of paper for use as hand towels, includes an IR sensor system for detecting a user. The sensor system scans at a first scanning rate and also at a second higher scanning rate. When the sensor system detects a user, it changes the scanning rate from the first to the second rate. The dispenser aims at reducing power consumption while providing improved reaction time when required to dispense paper.
Claims34
A dispenser for automatically dispensing a product stored in a product supply of said dispenser, said dispenser comprising:
- a sensor system for detecting the presence of a possible user to whom said product may be dispensed, wherein said sensor system is arranged to scan for the presence of a possible user at a first scanning rate, a second scanning rate and a third scanning rate, and wherein said second scanning rate is higher than said first scanning rate and said third scanning rate is lower than said first scanning rate, and wherein the sensor system is arranged to change said scanning rate from said first scanning rate to said second scanning rate when a possible user is determined as having been detected by said sensor system to be within a first detection zone, and said sensor system being arranged to change said scanning rate to said third scanning rate, when the sensor system has not detected the presence of a possible user for a predetermined time period.
Dependencies are inferred from the claim text.