# US 11,992,710 B2 · Filter mask

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- Number: US 11,992,710 B2
- Document ID: US11992710B2
- Status: Granted
- Kind: B2
- Application number: 17/171,954
- Filed: 2021-02-09
- Published: 2021-09-09
- Granted: 2024-05-28
- Earliest claimed: 2020-03-09
- Assignees: Omachron Intellectual Property Inc.
- Applicants: Omachron Intellectual Property Inc.
- Inventors: Wayne Ernest Conrad
- Web page: https://patentgrep.com/patent/US11992710B2

## CPC

- A62B 18/084: {Means for fastening gas-masks to heads or helmets}
- A41D 13/1161: {Means for fastening to the user's head}
- A41D 13/1184: {with protection for the eyes, e.g. using shield or visor}
- A62B 18/02: Masks (gas-masks for animals A62B18/06; masks for welders A61F9/06)
- A62B 18/025: {Halfmasks (A62B23/02 takes precedence; surgical face masks A41D13/11)}
- B03C 3/017: Combinations of electrostatic separation with other processes, not otherwise provided for
- B03C 3/08: characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
- B03C 3/09: characterised by presence of stationary flat electrodes arranged with their flat surfaces at right angles to the gas stream
- B03C 3/32: Transportable units, e.g. for cleaning room air
- B03C 3/41: Ionising-electrodes
- B03C 3/47: flat, e.g. plates, discs, gratings
- A41D 13/1138: {with a cup configuration}
- A62B 7/10: with filter elements
- A62B 18/006: {with pumps for forced ventilation (A62B18/045 takes precedence)}
- A62B 18/08: Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices (eye-pieces for protective goggles A61F9/02; composition of materials for the windows or other transparent parts A62D7/00)
- A62B 18/10: Valves
- 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)
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- B03C: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D59/00; combinations of magnetic or electrostatic separation with separation of solids by other means B03B, B07B)

## Abstract

A filter mask for biological material has a mask body and a strap assembly having first and second connectors each having a flared rigid portion for receiving a top strap.

## Claims

### Claim 1

A mask comprising:
(a) a mask body having a front;
(b) a strap assembly securable on a head of a user, the strap assembly comprising, when worn by a user, a first side portion on a first lateral side of a head of the user, a second side portion on a second lateral side of a head of the user and a top strap, a rear end of the first side portion has a first connector member, a rear end of the second side portion has a second connector member, the first connector member has a first rigid flared portion, the second connector member has a second rigid flared portion and the top strap has a first top strap portion and a spaced apart second top strap portion, wherein, when worn by a user, each of the first rigid flared portion and the second rigid flared portion extends outwardly from the head of the user,
wherein, when the mask is worn by a user, the top strap extends over the head of the user,
the first top strap portion of the top strap is directly attached to the first rigid flared portion, the second top strap portion of the top strap is directly attached to the second rigid flared portion whereby, when worn by a user, the first top strap portion of the top strap that is attached to the first rigid flared portion is spaced from the head of the user and the second top strap portion of the top strap that is attached to the second rigid flared portion is spaced from the head of the user.

### Claim 2 (depends on 1)

The mask of claim 1, wherein, when the mask is worn by the user and the top strap extends over the head of the user, each of the first and second rigid flared portions extend upwardly and outwardly at an angle in the range of 70-85° from a plane in which the corresponding rigid flared portion is located.

### Claim 3 (depends on 2)

The mask of claim 2, wherein the angle is about 80°.

### Claim 4 (depends on 1)

The mask of claim 1, wherein the top strap is adjustable.

### Claim 5 (depends on 4)

The mask of claim 4, wherein the adjustable top strap comprises an elastomeric material.

### Claim 6 (depends on 4)

The mask of claim 4, wherein the adjustable top strap has an adjustable length.

### Claim 7 (depends on 4)

The mask of claim 4, wherein each connector member is rotatable about an axis generally parallel to the head of the user such that the connector member rotates when the top strap is adjusted.

### Claim 8 (depends on 1)

The mask of claim 1, wherein the first side portion and the second side portion have convex sections that, when worn by a user, are spaced from the head of the user.

### Claim 9 (depends on 1)

The mask of claim 1, wherein the first and second connector members are positioned rearward of the external acoustic meatus of the head.

### Claim 10 (depends on 1)

The mask of claim 1, wherein the first and second connector members are rigid.

### Claim 11 (depends on 10)

The mask of claim 10, wherein the first and second connector members are made from a rigid plastic.

### Claim 12 (depends on 11)

The mask of claim 11, wherein the rigid plastic is acrylonitrile butadiene styrene (ABS), high density polyethylene (HDPE), nylon or polycarbonate.