# US 9,433,854 B1 · Device and method for removing scratch-off coatings

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- Number: US 9,433,854 B1
- Document ID: US9433854B1
- Status: Granted
- Kind: B1
- Application number: 14/621,649
- Filed: 2015-02-13
- Published: 2016-08-18
- Granted: 2016-09-06
- Earliest claimed: 2015-02-13
- Applicants: Andre D'Alessandro
- Inventors: Andre D'Alessandro
- Web page: https://patentgrep.com/patent/US9433854B1

## CPC

- A63F 3/068: {Accessories therefor, e.g. ticket scrapers}
- A47L 13/26: Other cleaning devices with liquid supply arrangements (such arrangements on floor-polishing machines A47L11/00, on scrapers A47L13/03, on mops A47L13/22; cloths, pads, or the like containing cleaning agents A47L13/17, A47L13/19)
- A63F 2250/183: Foam
- B08B 1/00: Cleaning by methods involving the use of tools (cleaning hollow articles by methods or apparatus specially adapted thereto B08B9/00)
- B08B 1/10: characterised by the type of cleaning tool
- B08B 1/165: {Scrapers}
- B08B 1/40: Cleaning tools with integrated means for dispensing fluids, e.g. water, steam or detergents (cleaning by the force of jets or sprays B08B3/02)
- A63F: CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL

## Abstract

A device and method can remove a scratch-off coating that initially conceals information. The device has a rubbing member including a melamine open cell foam. The device's structure includes a body with a fluid chamber that communicates with a distal opening. The rubbing member is mounted at this distal opening. The structure includes a scraping element located at the rubbing member. The melamine open cell foam and the scraping element are simultaneously pressed against and moved across the scratch-off coating until it is removed and retained in the foam sufficiently to reveal the concealed information.

## Claims

### Claim 1

A device for removing a scratch-off coating that initially conceals information, comprising:
a rubbing member comprising an abrasive, open cell melamine foam that is wetted with water; and
a structure including a body having a distal opening and a fluid chamber communicating with said distal opening, said rubbing member being mounted at said distal opening, said open cell foam having a distal end protruding from said distal opening, said structure comprising:
a scraping element located at said rubbing member, said scraping element comprising a stud mounted centrally in the distal end of said open cell foam.

### Claim 2 (depends on 1)

A device according to claim 1 wherein said stud has a flared distal head and a proximal shank that is embedded coaxially in said open cell foam.

### Claim 3 (depends on 1)

A device according to claim 1 wherein said body comprises:
a holding chamber located between said fluid chamber and said distal opening, said rubbing member being mounted in said holding chamber and extending to said distal opening, said holding chamber communicating with said fluid chamber and said distal opening.

### Claim 4

A device removing a scratch-off coating that initially conceals information, comprising:
a rubbing member comprising an abrasive, open cell melamine foam that is wetted with water; and
a structure including a body having a distal opening and a fluid chamber communicating with said distal opening, said rubbing member being mounted at said distal opening, said structure comprising:
a scraping element located at said rubbing member, said body comprising:
a neck with a rim at said distal opening surrounding at least part of said rubbing member, said scraping element comprising a pointed beveled edge formed along at least part of said rim.

### Claim 5

A device for removing a scratch-off coating that initially conceals information, comprising:
a rubbing member comprising an abrasive, open cell melamine foam that is wetted with water; and
a structure including a body having a distal opening and a fluid chamber communicating with said distal opening, said rubbing member being mounted at said distal opening, said structure comprising:
a scraping element located at said rubbing member said rubbing member comprising:
a block with a beveled distal face, said scraping element comprising a blade mounted alongside said block, said blade having a distal edge parallel to the beveled distal face of said block.

### Claim 6

A device for removing a scratch-off coating that initially conceals information, comprising:
a rubbing member comprising an abrasive, open cell melamine foam that is wetted with water; and
a structure including a body having a distal opening and a fluid chamber communicating with said distal opening, said rubbing member being mounted at said distal opening, said open cell foam having a distal end protruding from said distal opening, said structure comprising:
a scraping element located at said rubbing member, said body comprising:
a holding chamber located between said fluid chamber and said distal opening, said rubbing member being mounted in said holding chamber and extending to said distal opening, said holding chamber communicating with said fluid chamber and said distal opening; and
a transverse perforated wall between said fluid chamber and said holding chamber, said wall being opposite said distal opening.

### Claim 7 (depends on 6)

A device according to claim 6 comprising:
a wick routed from said fluid chamber to said holding chamber; and
absorbent batting mounted in said fluid chamber and wetted with water.

### Claim 8 (depends on 7)

A device according to claim 7 wherein said body has an external surface with at least a portion thereof being cylindrical.

### Claim 9 (depends on 8)

A device according to claim 8 wherein said body comprises a neck surrounding at least a portion of said rubbing member, said device comprising:
a cap sized to fit around said neck and to cover said rubbing member.

### Claim 10 (depends on 9)

A device according to claim 9 wherein said body has a cavity opposite said distal opening, said cavity being adapted to hold said cap.

### Claim 11

A device for removing a scratch-off coating that initially conceals information, comprising:
a compressible rubbing member comprising an open cell foam; and
a structure including a body having a distal opening and a fluid chamber communicating with said distal opening, said rubbing member being mounted at said distal opening, said rubbing member having a distal end protruding from said distal opening, said structure comprising:
a scraping element located at said rubbing member, said scraping element comprising a stud mounted centrally in the distal end of said open cell foam.

### Claim 12

A device for removing a scratch-off coating that initially conceals information, comprising:
a compressible rubbing member; and
a structure including a body having a distal opening and a fluid chamber communicating with said distal opening, said rubbing member being mounted at said distal opening, said structure comprising:
a scraping element located at said rubbing member, said body comprising:
a neck at said distal opening with a rim surrounding at least part of said rubbing member, said scraping element comprising a pointed beveled edge formed along at least part of said rim.

### Claim 13

A device for removing a scratch-off coating that initially conceals information, comprising:
a compressible rubbing member; and
a structure including a body having a distal opening and a fluid chamber communicating with said distal opening, said rubbing member being mounted at said distal opening, said structure comprising:
a scraping element located at said rubbing member, said rubbing member comprising:
a block with a beveled distal face, said scraping element comprising a blade mounted alongside said block, said blade having a distal edge parallel to the beveled distal face of said block.

### Claim 14

A device for removing a scratch-off coating that initially conceals information, comprising:
a compressible rubbing member; and
a structure including a body having a distal opening and a fluid chamber communicating with said distal opening, said rubbing member being mounted at said distal opening, said structure comprising:
a scraping element located at said rubbing member, said body comprising:
a holding chamber located between said fluid chamber and said distal opening, said rubbing member being mounted in said holding chamber and extending to said distal opening, said holding chamber communicating with said fluid chamber and said distal opening;
a transverse perforated wall between said fluid chamber and said holding chamber, said wall being opposite said distal opening;
a wick routed from said fluid chamber to said holding chamber; and
absorbent batting mounted in said fluid chamber and wetted with water.

### Claim 15

A device for removing a scratch-off coating that initially conceals information, comprising:
a rubbing member having a distal end and including a melamine open cell foam that is abrasive and wetted with water; and
a structure including a body having a distal opening, said body having an external surface with at least a portion thereof being cylindrical, said rubbing member being mounted at said distal opening, said structure comprising:
a scraping element located at said rubbing member, said body including:
a neck at said distal opening with a rim surrounding at least part of said rubbing member;
a fluid chamber communicating with said distal opening;
a holding chamber located between said fluid chamber and said distal opening, said rubbing member being mounted in said holding chamber and extending to said distal opening, said holding chamber communicating with said fluid chamber and said distal opening;
a transverse perforated wall between said fluid chamber and said holding chamber, said wall being opposite said distal opening;
a wick routed from said fluid chamber to said holding chamber; and
absorbent batting mounted in said fluid chamber and wetted with water, said device comprising:
a cap sized to fit around said neck and to cover said rubbing member, said body having a cavity opposite said distal opening, said cavity being adapted to hold said cap.