Accessory device for safety breathing equipment

• US 4,818,122 A
• Filed: 08/17/1987
• Issued: 04/04/1989
• Est. Priority Date: 08/16/1986
• Status: Expired due to Fees

• Current Assignee: Robin D. Arbuthnot
• Original Assignee: Robin D. Arbuthnot
• Inventors: Arbuthnot, Robin D.
• Primary Examiner(s): Garbe, Stephen P.
• Application Number:
  US07/086,693
• Time in Patent Office: 596 Days
• Field of Search: 383/907, 383/103, 383/10, 383/41, 383/66, 128/201.25, 128/202.13, 150/52 R, 55/DIG. 9, 55/DIG. 33
• US Class Current: 383/10
• CPC Class Codes: A62B 25/00 Devices for storing or holding or carrying respiratory or breathing apparatus
• CPC Class Codes: Y10S 383/907 Peculiar, particular shape
• CPC Class Codes: Y10S 55/33 Gas mask canister

Abstract

An accessory device for safety breathing equipment which comprises a generally triangular bag of impervious flexible material tapering downwardly from a wide closed top at which a handle is provided, the bag having a zip-type fastener by which the filter unit of a respirator can be loosely accommodated and supported in a voluminous upper region of the bag equipped with an inlet valve, with a hose which couples to the face mask projecting from the narrow bottom of the bag which tightly surrounds said hose when the bag is closed around the filter unit by means of the zip-type fastener.

Claims

1. An accessory device for safety breathing equipment, comprising a bag of flexible impervious material, narrowing from a wide closed top to a relatively narrow bottom end, said bag having means at the top by which it can be carried, a voluminous region below the top for accommodating the air filter unit of a respirator, a region of reducing width below said voluminous region for accommodating the hose or hoses leading towards the face mask of the respirator, and a means of closure extending from the bottom end to a point at or adjacent the closed top and which, when the bag is in use, closes the bag tightly around the hose or hoses extending out of its bottom end and loosely encloses the filter unit in the voluminous region, the arrangement also providing for air access to the interior of the bag for enabling continued operation of the filter unit when required.

2. A device according to claim 1, having a closure means constituted by a zip-type fastener.

3. A device according to claim 1, having a one-way valve for providing access of air to the voluminous region of the bag.

4. A device according to claim 1, wherein the bag is made of impervious, flexible and semi-transparent plastics material.

5. A device according to claim 1, wherein the bag is of a generally triangular shape, and incorporates a stiffening member along the closed top of the triangle.

6. A device according to claim 1, in combination with a filter unit supported in the voluminous region of the closed bag with at least one hose for coupling the filter unit to a face mask projecting from the narrowbottom end of the bag.