# US 11,027,156 B2 · Emergency filter system for ventilated hood

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- Number: US 11,027,156 B2
- Document ID: US11027156B2
- Status: Granted
- Kind: B2
- Application number: 15/382,205
- Filed: 2016-12-16
- Published: 2017-04-13
- Granted: 2021-06-08
- Earliest claimed: 2011-10-21
- Assignees: Honeywell International Inc.
- Applicants: Honeywell International Inc.
- Inventors: Christophe Chessari; Swan Tuffery
- Web page: https://patentgrep.com/patent/US11027156B2

## CPC

- A62B 17/04: Hoods
- A62B 7/10: with filter elements
- A62B 17/006: {against contamination from chemicals, toxic or hostile environments; ABC suits}
- A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00)

## Abstract

A ventilated hood having an external air flow hose and comprising a filter incorporated in the ventilated hood, and a seal, wherein when the seal is intact, air does not flow through the filter.

## Claims

### Claim 1

A ventilated hood, comprising:
an external air flow hose coupled to the ventilated hood;
an emergency breathing apparatus comprising a filter incorporated in the ventilated hood, the filter having an exterior face and an interior face, where the exterior face of the filter faces towards an exterior of the ventilated hood and wherein the interior face of the filter faces towards an interior of the ventilated hood;
a first seal coupled to one of the exterior of the ventilated hood or the exterior face of the filter;
a head enclosure; and
a collar coupled to the external air flow hose and configured to inflate in response to air flow in the external air flow hose to impede infiltration of contaminants from an external environment to an interior of the head enclosure.

### Claim 2 (depends on 1)

The ventilated hood of claim 1, further comprising a second seal coupled to one of interior of the ventilated hood or the interior face of the filter.

### Claim 3 (depends on 2)

The ventilated hood of claim 2, wherein the filter is moisture laden when both the first seal and the second seal are intact.

### Claim 4 (depends on 1)

The ventilated hood of claim 1, wherein the filter comprises at least one of an absorbent medium and an adsorbent medium.

### Claim 5 (depends on 1)

The ventilated hood of claim 1, further comprising a cowl that is configured to drape over a top of the shoulders of a human wearer of the ventilated hood and to at least partially cover a chest and a back of the human wearer, wherein the filter is coupled to the cowl.

### Claim 6 (depends on 5)

The ventilated hood of claim 5, wherein the emergency breathing apparatus is minor coupled to the cowl.

### Claim 7 (depends on 1)

The ventilated hood of claim 1, wherein the filter is coupled to the ad enclosure.

### Claim 8 (depends on 1)

The ventilated hood of claim 1, wherein the external air flow hose is coupled to a powered air purifying respirator (PAPR).

### Claim 9 (depends on 1)

The ventilated hood of claim 1, wherein the collar comprises a crossing configured to allow the emergency breathing apparatus to pass through the collar.

### Claim 10 (depends on 1)

The ventilated hood of claim 1, wherein the emergency breathing apparatus is rerrs vably coupled to the head enclosure.

### Claim 11 (depends on 1)

The ventilated hood of claim 1, wherein the emergency breathing apparatus further comprises:
a mouth piece; and
a breathing pipe coupled at one end to the filter and at a second end to the mouth piece.