# US 8,740,027 B2 · Backpack for filter bag used in combination with a pneumatic sander

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- Number: US 8,740,027 B2
- Document ID: US8740027B2
- Status: Granted
- Kind: B2
- Application number: 13/320,692
- Filed: 2010-05-17
- Published: 2012-03-15
- Granted: 2014-06-03
- Earliest claimed: 2009-06-16
- Assignees: 3M Innovative Properties Company
- Applicants: Edward L. Manor; Nicholas B. Manor
- Inventors: Edward L. Manor; Nicholas B. Manor
- Web page: https://patentgrep.com/patent/US8740027B2

## CPC

- A45F 3/04: Sacks or packs carried on the body by means of two straps passing over the two shoulders
- A47L 5/00: Structural features of suction cleaners
- A45F 2003/003: {combined with other objects; specially adapted for carrying specific objects}
- A45F: TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
- 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)

## Abstract

A backpack for use in combination with a filter bag and a pneumatic sanding tool is described. The backpack comprises a backpack strap, a back panel, and an opening or a first mesh panel located in the back panel. The opening or the first mesh panel is positioned to direct exhaust air from the filter bag onto a person's back during use.

## Claims

### Claim 1

A combination comprising a backpack, a vacuum hose, and a filter bag; the backpack comprising a backpack strap, a back panel, an interior compartment, and an opening into the interior compartment located in the back panel; and wherein the opening is positioned to direct exhaust air from the filter bag located in the interior compartment onto a person's back during use.

### Claim 2 (depends on 1)

The combination of claim 1 wherein the opening comprises a first mesh panel.

### Claim 3 (depends on 1)

The combination of claim 1 comprising a flow control device for regulating the volume of exhaust air passing through the opening.

### Claim 4 (depends on 3)

The combination of claim 3 wherein the flow control device comprises a flap secured to the back panel for selectively opening or closing the opening.

### Claim 5 (depends on 1, 2, 3)

The combination of claims 1, 2, 3, or 4 comprising a second mesh panel located in the backpack.

### Claim 6 (depends on 5)

The combination of claim 5 wherein the second mesh panel is located in the lower ½ of the backpack's height, H.

### Claim 7 (depends on 5)

The combination of claim 5 comprising a flow control device for regulating the volume of exhaust air passing through the second mesh panel.

### Claim 8 (depends on 1)

The combination of claim 1 wherein the backpack comprises a material having an air permeability of less than about 100 ft3/min/ft2.

### Claim 9 (depends on 8)

The combination of claim 8 wherein the backpack comprises a material having an air permeability of 0 ft3/min/ft2.

### Claim 10 (depends on 1, 2, 8)

The combination of claims 1, 2, 8, or 9 wherein the opening comprises an open area and the open area is greater than 20 cm2.

### Claim 11 (depends on 2)

The combination of claim 2 wherein the first mesh panel comprises a material having an air permeability of greater than about 250 ft3/min/ft2.

### Claim 12 (depends on 1)

The combination of claim 1 comprising a vacuum hose aperture and the vacuum hose aperture is located in the upper ½ of the backpack's height, H.

### Claim 13 (depends on 12)

The combination of claim 12 comprising a top panel and the vacuum hose aperture is located in the top panel.

### Claim 14 (depends on 12)

The combination of claim 12 comprising a vacuum hose strap attached to the backpack strap.

### Claim 15 (depends on 14)

The combination of claim 14 wherein the backpack strap comprises a shoulder strap.