# US 5,345,724 A · Sanding device for V-shaped slats

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- Number: US 5,345,724 A
- Document ID: US5345724A
- Status: Granted
- Kind: A
- Application number: 08/045,724
- Filed: 1993-04-14
- Granted: 1994-09-13
- Earliest claimed: 1993-04-14
- Inventors: Patrick M. Ng, Jr.
- Web page: https://patentgrep.com/patent/US5345724A

## CPC

- B08B 1/10: characterised by the type of cleaning tool
- B24B 23/04: with oscillating grinding tools; Accessories therefor
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

## Abstract

An improved sanding device is provided for various work surfaces which consists of an elongate wedge. Abrasive material is applied to work contact sides of the wedge. A mechanism is attached to a back end of the wedge, for vibrating the wedge with the abrasive material. The abrasive material can be used on V-shaped slats, bi-fold doors, shutters, casing, ornamental work and similar articles.

## Claims

### Claim 1

An improved sanding device for various work surfaces which comprises:
a) an elongate wedge, said elongate wedge being fabricated out of a durable material;
b) abrasive material applied to work contact sides of said wedge;
c) means attached to a back end of said wedge, for vibrating said wedge with said abrasive material, so that said abrasive material can be used on V-shaped slats, bi-fold doors, shutters, casing, ornamental work and similar articles; and
d) padding fabricated out of a resilient material, in which said padding is positioned between said abrasive material and said work contact sides of said wedge to cushion said abrasive material.

### Claim 2 (depends on 1)

An improved sanding device as recited in claim 1, wherein said abrasive material is a peel and stick type sheet of sandpaper having adhesive that is applied to said padding on said work contact sides of said wedge.

### Claim 3 (depends on 2)

An improved sanding device as recited in claim 2, wherein said vibrating means includes:
a) an electric vibrator motor; and
b) means for coupling said electric vibrator motor to the center of said back end of said wedge.

### Claim 4 (depends on 3)

An improved sanding device as recited in claim 3, wherein said vibrating means further includes:
a) a frustrum cone shaped handle to be gripped by a hand of a person; and
b) a cylindrical casing extending from a wide end of said handle for retaining said electric vibrator motor therein, said casing having a closed end and a plurality of side vents for cooling said electric vibrator motor.

### Claim 5 (depends on 4)

An improved sanding device as recited in claim 4, wherein said electric vibrator motor includes:
a) an electric power cord extending from a narrow end of said handle; and
b) a three way control switch on said handle, that can be manually manipulated between an off, medium and high position, so as to operate said electric vibrator motor.

### Claim 6 (depends on 5)

An improved sanding device as recited in claim 5, further including fine foam burn resistant material placed within said casing, so as to filter air through said side vents.

### Claim 7 (depends on 6)

An improved sanding device as recited in claim 6, wherein said coupling means includes a pair of concentric coil springs connected at each end to and extending between the center of said back end of said wedge and said closed end of said casing.

### Claim 8 (depends on 7)

An improved sanding device as recited in claim 7, further including a flexible sheath which fits over and protects said concentric coil springs from the weather and marring surfaces.

### Claim 9 (depends on 8)

An improved sanding device as recited in claim 8, wherein said durable material of said wedge is hard plastic.

### Claim 10 (depends on 9)

An improved sanding device as recited in claim 9, wherein said resilient material of said padding is soft rubber.

### Claim 11 (depends on 10)

An improved sanding device as recited in claim 10, further including a motorcycle type rubber hand grip which fits over said handle for a better grip and to reduce fatigue due to vibration.

### Claim 12 (depends on 11)

An improved sanding device as recited in claim 11, further including a quick change action locking plate between said back end of said wedge and an end of said concentric coil springs, so that different sized and shaped wedges can now be utilized to allow for the use of different types of abrasive applicators, typically but not limited to a wedge one half the size of the original wedge and a semi-spherical shaped wedge for pipes.