# US 7,743,773 B2 · Over-wrap for smoking article

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- Number: US 7,743,773 B2
- Document ID: US7743773B2
- Status: Granted
- Kind: B2
- Application number: 11/493,664
- Filed: 2006-07-27
- Published: 2007-04-05
- Granted: 2010-06-29
- Earliest claimed: 2005-07-29
- Assignees: Philip Morris USA Inc.
- Inventors: Charles L. Gaworski
- Web page: https://patentgrep.com/patent/US7743773B2

## CPC

- A24D 1/027: {with ventilating means, e.g. perforations}
- A24D 3/043: {with ventilation means, e.g. air dilution (A24D3/041 takes precedence)}
- A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES

## Abstract

An over-wrap for connecting a tobacco rod and a cigarette filter. The over-wrap includes a tipping wrapper and a plurality of raised ribs extending from the tipping wrapper and forming a plurality of channels between the tipping wrapper and the plug wrap. The plurality of channels allow air to flow from a tobacco rod end of the filter to a plurality of ventilation holes within a plug wrap of the filter when the over-wrap is wrapped around the filter and tobacco rod.

## Claims

### Claim 1

An over-wrap adjacent a tobacco rod and a filter comprising:
a tipping wrapper; and
a plurality of raised ribs extending from the tipping wrapper and forming a plurality of channels between the tipping wrapper and the filter, wherein the plurality of channels allow air to flow from a tobacco rod end of the filter to a plurality of ventilation holes within a plug wrap of the filter when the over-wrap is wrapped around the filter and the tobacco rod,
wherein the over-wrap is crimped at a butt end of the filter to prevent leakage.

### Claim 2 (depends on 1)

The over-wrap of claim 1, wherein the tipping wrapper has a plurality of ventilation holes.

### Claim 3 (depends on 2)

The over-wrap of claim 2, wherein the plurality of ventilation holes are located nearer the tobacco rod end of the filter than the butt end of the filter.

### Claim 4

A cigarette comprising:
a tobacco rod including a tobacco filler and a wrapper around the tobacco filler;
a filter comprising a filter material and a plug wrap wrapped around the filter material; and
an over-wrap connecting the tobacco rod and the filter, the over-wrap comprising:
a tipping wrapper; and
a plurality of raised ribs extending from the tipping wrapper and forming a plurality of channels between the tipping wrapper and the plug wrap, wherein the plurality of channels allow air to flow from a tobacco rod end of the filter to a plurality of ventilation holes within the plug wrap,
wherein the over-wrap is crimped at a butt end of the cigarette to prevent leakage.

### Claim 5 (depends on 4)

The cigarette of claim 4, wherein the tipping wrapper has a plurality of ventilation holes.

### Claim 6 (depends on 5)

The cigarette of claim 5, wherein the plurality of ventilation holes are located nearer the tobacco rod end of the filter than the butt end of the filter.

### Claim 7 (depends on 6)

The cigarette of claim 6, wherein the over-wrap is sealed at the tobacco rod end of the filter to prevent leakage.

### Claim 8 (depends on 4)

The cigarette of claim 4, wherein the over-wrap is open at the tobacco rod end of the filter to allow airflow into the channels.

### Claim 9 (depends on 4)

The cigarette of claim 4, wherein the filter and the over-wrap adhere to each other by spot gluing the raised ribs of the over-wrap to the plug wrap and the wrapper around the tobacco filler.

### Claim 10 (depends on 4)

The cigarette of claim 4, wherein the channels run parallel to a longitudinal axis of the filter.