US 11,376,448 B2 · High pressure-air cylinders for use with self-contained breathing apparatus

Abstract

A self-contained breathing apparatus includes an air cylinder pressurized to about 5500 psi, wherein the air cylinder is compatible with infrastructure used in conjunction with the air cylinder. The self-contained breathing apparatus also includes a first regulator valve for reducing air pressure from the air cylinder to a predetermined level. A second regulator valve is also provided for reducing the air pressure from the predetermined level to a level suitable for use by an operator, wherein air is supplied from the second regulator valve to the operator via a mask. The self-contained breathing apparatus further includes a frame for supporting the air cylinder on the back of the operator. Other embodiments are described and claimed.

Claims27

Dependent claims

A self-contained breathing apparatus, comprising:

a cylinder having a pressure volume portion for containing a volume of gas pressurized to a service pressure;
a frame configured to support the cylinder on a user's back;
at least one regulator valve in fluid communication with the cylinder;
and a mask arranged to provide gas from the cylinder to the user;
wherein the service pressure of the cylinder is at least about 5,000 psig and no greater than about 6,000 psig;
wherein the cylinder has a rated service time of about 30 minutes;
wherein the cylinder pressure volume portion has a length of at least about 14.8 inches and no greater than about 17.3 inches;
wherein the cylinder pressure volume portion has a diameter of at least about 4.3 inches and no greater than about 4.7 inches;
and
wherein the cylinder has a weight of about 6.6 pounds.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/435,118Filed 7 Jun 2019 · continuation

Priority

25 May 2011

Published

US 2019/0374795 A112 Dec 2019

Granted

5 Jul 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

A62B 7/02
Respiratory apparatus: with compressed oxygen or air
A62B 9/022
Valves: breathing demand regulators
A62B 9/04
Component parts for respiratory or breathing apparatus: couplings; Supporting frames
A62B 18/02
Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor…:…

Family

Application61/519,603Us provisional application · filed 25 May 2011

Application13/217,703Parent of this continuation · filed 25 Aug 2011

Application14/644,139Parent of this continuation · filed 10 Mar 2015

US 9,004,068 B2Parent of this continuation · filed 15 Apr 2015

Application16/017,760Parent of this continuation · filed 25 Jun 2018

US 10,016,628 B2Parent of this continuation · filed 10 Jul 2018

US 2019/0374795 A1Pre-grant publication · published 12 Dec 2019

US 11,471,709 B2Related patent

US 2012/0298109 A1Published application

US 2016/0367841 A1Published application

US 2018/0353780 A1Published application

US 11,376,448 B2This patent

From the US filing history. Foreign family members aren’t listed.

High pressure-air cylinders for use with self-contained breathing apparatus

Life of this patent

High pressure-air cylinders for use with self-contained breathing apparatus

Life of this patent

Abstract

Claims27