Photonic paper product dispenser

• US 6,069,354 A
• Filed: 05/01/1998
• Issued: 05/30/2000
• Est. Priority Date: 11/30/1995
• Status: Expired due to Fees

• Current Assignee: Budansky, Yury, Jing Cheng Luo, Robert R. Alfano
• Original Assignee: Budansky, Yury, Jing Cheng Luo, Robert R. Alfano
• Inventors: Budansky, Yury, Luo, Jing Cheng, Alfano, Robert R.
• Primary Examiner(s): Le, Que T.
• Assistant Examiner(s): PYO, KEVIN K
• Application Number:
  US09/071,004
• Time in Patent Office: 760 Days
• Field of Search: 250/221, 312/34.8, 312/34.9, 312/34.11, 312/34.12, 242/563, 242/564.1, 242/564.2, 225/10, 225/11
• US Class Current: 250/221
• CPC Class Codes: A47K 10/36 with mechanical dispensing, roll switching or cutting devices
• CPC Class Codes: A47K 10/3612 with drive and pinch rollers
• CPC Class Codes: A47K 10/3625 with electronic control means
• CPC Class Codes: A47K 2010/3668 Detection of the presence of a user

Abstract

A photonic paper product dispenser is provided for dispensing a portion of a roll of a paper product. The photonic paper product dispenser comprises a housing which holds the roll of the paper product. The dispenser further comprises a light source for emitting an infrared light signal and a photodetector affixed to the housing which detects infrared light from the source reflected by the user and converts the light to electrical signals. The dispenser further includes a signal processing circuit in electrical connection with the photodetector. The signal processing circuit receives and processes signals sent by the photodetector. The dispenser further includes a motor in electrical connection with said signal processing circuit. The dispenser further includes a pair of gears mechanically connected to the motor which rotate upon activation of the motor. The gears are mechanically connected to one of a pair of rollers, the roller rotating upon rotation of the gears. The pair of rollers are mounted in the housing so that they are frictionally engaged with the roll of the paper product. The roll of the paper product is fed tautly between the pair of rollers. As the roller connected to the gears rotates, the roll of the paper product will rotate causing a sheet of the paper product to advance out from the dispenser which can then be removed from the roll by the user without having to touch any part of the dispenser.

Claims

1. A photonic paper product dispenser for dispensing a portion of a roll of a paper product, comprising:

a. a housing for holding the roll of the paper product therewithin;

b. an infrared light source in the front of said housing, said light source having a variable intensity level;

c. a photodetector in the front of said housing for detecting infrared light from said infrared light source reflected off a user and converting the light received to an electrical signal, said photodetector including a phototransistor;

d. a signal processing circuit for processing said signal from said photodetector said signal processing circuit reducing noise and amplifying the signal form said photodetector;

e. a noise rejection circuit for rejecting signals from light sources other than said infrared light source;

f. a motor;

g. a monostable timing circuit for receiving a signal from the noise rejection circuit and generating a timing signal for controlling the operation of the motor;

h. one or more gears mechanically connected to said motor, said one or more gears rotating upon activation of said motor;

i. a pair of rollers mounted in said housing, one of said rollers being mechanically connected to said gears causing said roller to rotate upon rotation of said gears, the pair of rollers being frictionally engaged with the roll of the paper product thereby causing rotation of the roll of the paper product upon rotation of said roller, rotation of the roll of the paper product advancing a sheet of the paper product out from the housing which can then be removed from the roll; and

j. a power supply unit and for providing power to the electrical components in the photonic paper product dispenser, the power supply unit including two different power supplies in order to isolate the infrared light source form the other components therein.

2. A photonic paper product dispenser as claimed in claim 1 wherein both of said pair of rollers are mechanically connected to said gears, both of said pair of rollers rotating upon rotation of said gears.

3. A photonic paper product dispenser as claimed in claim 1 wherein the roll of the paper product is frictionally engaged with said pair of rollers by feeding the roll of the paper product tautly between said pair of rollers.

4. A photonic paper product dispenser as claimed in claim 3 wherein the length of the sheet of the paper product advanced from said housing upon detection of the light by said photodetector is adjustable.

5. A photonic paper product dispenser as claimed in claim 4 wherein the speed in which the sheet of the paper product is advanced from said housing upon detection of the light by said photodetector is adjustable.

6. A photonic paper product dispenser as claimed in claim 5 further comprising an on/off switch for activating and deactivating said photodetector, and a manual button electrically connected to said motor, said manual button when depressed sending a signal to activate said motor which in turn rotates said gears and said rollers, thereby advancing a sheet of the roll of the paper product from the housing which can be removed from the roll.