# US 5,334,254 A · Non-abrasive disc cleaner

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- Number: US 5,334,254 A
- Document ID: US5334254A
- Status: Granted
- Kind: A
- Application number: 07/964,001
- Filed: 1992-10-21
- Granted: 1994-08-02
- Earliest claimed: 1992-10-21
- Assignees: Paul J. Gelardi
- Inventors: Paul J. Gelardi; John A. Gelardi; David A. Capotosto
- Web page: https://patentgrep.com/patent/US5334254A

## CPC

- G11B 23/505: {of disk carriers}
- Y10S 134/902: Semiconductor wafer
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A non-abrasive disc cleaner is disclosed. The present cleaner incorporates a base, a cover, a cleaning solution reservoir, a spin pan and a spinner means with a drive spindle for spinning the disc within the spin pan. Solution is supplied to the spin pan from the reservoir. A spinner is mounted within the cleaner, and the spin pan is horizontally positioned within the base above the reservoir. The disc is positioned with respect to the fluid within the pan with the spinning motion of the CD creating froth which forms a high surface area, thin skin of bubbles on the CD. Because of the spinning motion, the bubbles move outwardly and the CD is dried by air contact. Spinning the disc rapidly above the surface of the fluid causes a vacuum to draw the fluid upwards for frothing, or spinning the disc within the fluid froths the cleaning fluid and centrifugally removed the fluid from the pan.

## Claims

### Claim 1

A non-abrasive cleaner for discs comprising a spinning means having an engagement means for driving the disc, an enclosure, a spin pan for holding cleaning fluid and contacting the disc with cleaning fluid supplied from a cleaning fluid reservoir, the disc positioned and spinning with respect to the fluid, initially frothing the fluid within the spin pan and subsequently spinning the fluid off the disc to wash and dry the disc without abrasive contact, wherein the pan is positioned horizontally over the reservoir and has a central port for facilitating supplying of fluid from the reservoir to the pan.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the disc is positioned horizontally with respect to the fluid in the spin pan.

### Claim 3 (depends on 1)

The apparatus of claim 1, further comprising the spinning means being a motor connected to a power source.

### Claim 4 (depends on 1)

The apparatus of claim 1, further comprising the reservoir and spin pan provided within a base of the enclosure and the spinning means provided within a cover of the enclosure, a hinged connection provided between the base and the cover.

### Claim 5 (depends on 4)

The apparatus of claim 4, wherein the motor is mounted in the cover and the engagement means extends towards the base for positioning and spinning the disc with respect to the fluid in the spin pan.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the engagement means is a spindle for engaging the center hole of a disc.

### Claim 7 (depends on 1)

The apparatus of claim 1, further comprising the base incorporating a splash guard proximal the outer edges of the pan for collecting fluid spinning off the disc and pan, and directing the fluid to the reservoir.

### Claim 8 (depends on 7)

The apparatus of claim 7, further comprising a filter element provided between the pan and the reservoir so as to filter the fluid prior to entering the reservoir.

### Claim 9 (depends on 1)

The apparatus of claim 1, further comprising the cover incorporating a viewing means for viewing the spinning disc.

### Claim 10 (depends on 1)

The apparatus of claim 1, further comprising a wiping pad provided on the cover for drying excess fluid left on the disc after spinning.

### Claim 11 (depends on 1)

The apparatus of claim 1, further comprising a pump provided for forcing fluid from the reservoir onto the pan.

### Claim 12 (depends on 1)

The apparatus of claim 1, further comprising a reverse mode provided within the motor for reversing the spin of a CD.

### Claim 13 (depends on 1)

The apparatus of claim 1, further comprising the disc positioned within the pan at least partially submerged within the fluid.

### Claim 14 (depends on 1)

The apparatus of claim 1, further comprising the disc positioned within the spin pan above a cleaning fluid level, wherein the disc spins and creates a vacuum underneath which draws the fluid upward in contact with the disc to thereby clean the disc.

### Claim 15

A non-abrasive cleaner for discs comprising a spinning means having an engagement means for driving the disc, an enclosure, a spin pan for holding cleaning fluid and contacting the disc with cleaning fluid supplied from a cleaning fluid reservoir, the disc positioned and spinning with respect to the fluid, initially frothing the fluid within the spin pan and subsequently spinning the fluid off the disc to wash and dry the disc without abrasive contact, further comprising the motor being a variable speed motor, wherein the cleaner has a wash cycle and a dry cycle, the wash cycle having different RPMs that the dry cycle for frothing and partially submerging the disc in the fluid on the pan, and subsequently spinning the fluid off the disc and the pan due to spin during the dry cycle.

### Claim 16

A non-abrasive cleaner for discs, comprising a motor having a disc attachment means for centrifugally spinning disc, a base, a cover hinged to the base and further attached to the motor, a spin pan provided within the base for holding cleaning fluids, the disc positioned above the cleaning fluid in the pan and a spinning motion being imparted by the motor, creating a vacuum which draws the cleaning fluid upward from a central port of a reservoir to the pan, into contact with the disc to thereby clean the disc without abrasive contact.

### Claim 17

A non-abrasive cleaning method for discs comprising supplying cleaning fluid from a reservoir to a spin pan in an enclosure having a spinning means, horizontally positioning and spinning the disc with respect to the fluid, contacting the disc with fluid from a central port of a reservoir to the pan thereby facilitating supplying of fluid from the reservoir to the pan, frothing the fluid with the spinning disc, and subsequently spinning the fluid off the disc to dry the disc through centrifugal force and air contact, thereby washing and drying the disc without abrasive contact.

### Claim 18 (depends on 17)

The method of claim 17, wherein the spinning comprises spinning the disc with a motor connected to a power source.

### Claim 19 (depends on 17)

The method of claim 17, further comprising providing the cleaning fluid reservoir in communication with the spin pan and communicating fluid from the reservoir to the spin pan.

### Claim 20 (depends on 19)

The method of claim 19, further comprising providing the reservoir and spin pan within the base and the spinning means within the cover; hinging the base and the cover, positioning the disc on an engagement means attached to the motor in the cover and closing the cover on the base.

### Claim 21 (depends on 17)

The method of claim 17, further comprising providing the enclosure with a base and a cover, positioning the spin pan within the base, and closing the cover on the base prior to spinning the disc with respect to the fluid.

### Claim 22 (depends on 17)

The method of claim 17, wherein the disc is positioned approximately horizontally with respect to the fluid.

### Claim 23 (depends on 17)

The method of claim 17, further comprising mounting an engagement means on the spinning means and engaging the disc to impel the disc in a spinning motion as imparted by the spinning means.

### Claim 24 (depends on 23)

The method of claim 23, wherein the engaging means engages the center hole of a disc.

### Claim 25 (depends on 17)

The method of claim 17, further comprising providing a splash guard proximal the outer edges of the pan, collecting fluid spinning off the disc and pan on the guard, and directing the fluid to the reservoir in communication with the pan.

### Claim 26 (depends on 25)

The method of claim 25, further comprising providing a filter between the pan and the reservoir so as to filter the fluid after washing the disc and prior to entering the reservoir.

### Claim 27 (depends on 17)

The method of claim 17, further comprising incorporating a viewing means on the enclosure for viewing the spinning disc.

### Claim 28 (depends on 17)

The method of claim 17, further comprising providing a wiping pad on the enclosure for drying excess fluid left on the disc after spinning.

### Claim 29 (depends on 17)

The method of claim 17, further comprising at least partially submerging the disc in the fluid on the pan, spinning the disc and thereby frothing the fluid to create bubbles which wash disc, and subsequently spinning the bubbles off the disc to dry the disc.

### Claim 30 (depends on 17)

The method of claim 17, further comprising positioning the disc above the fluid in the spin pan, spinning the disc at rate to create a vacuum between the disc and the fluid to thereby draw the fluid upward into contact with the disc, frothing the fluid with the spinning disc to clean the disc, and drying the disc through continued spinning.

### Claim 31

A non-abrasive cleaning method for discs comprising supplying cleaning fluid from a reservoir to a spin pan in an enclosure having a spinning means, positioning and spinning the disc with respect to the fluid, contacting the disc with fluid, frothing the fluid with the spinning disc, and subsequently spinning the fluid off the disc to dry the disc through centrifugal force and air contact, thereby washing and drying the disc without abrasive contact, further comprising providing the cleaning fluid reservoir in communication with the spin pan and communicating fluid from the reservoir to the spin pan, further comprising providing the reservoir and spin pan within the base and the spinning means within the cover; hinging the base and the cover, positioning the disc on an engagement means attached to the motor in the cover and closing the cover on the base, further comprising positioning the pan horizontally over the reservoir, incorporating a port in the pan, and supplying fluid from the reservoir to the pan through the port.