US 11,896,856 B2
High pressure air cylinders for use with self-contained breathing apparatus
Jerry A. Phifer, Peachland, NC (US); William E. Parson, Indian Trail, NC (US); and Ronald B. Mele, Waxhaw, NC (US)
Assigned to Scott Technologies, Inc., Monroe, NC (US)
Filed by SCOTT TECHNOLOGIES, INC., Monroe, NC (US)
Filed on Jun. 30, 2022, as Appl. No. 17/854,172.
Application 17/854,172 is a continuation of application No. 16/435,118, filed on Jun. 7, 2019, granted, now 11,376,448.
Application 16/435,118 is a continuation of application No. 16/017,760, filed on Jun. 25, 2018, granted, now 11,471,709.
Application 16/017,760 is a continuation of application No. 14/644,139, filed on Mar. 10, 2015, granted, now 10,016,628, issued on Jul. 10, 2018.
Application 14/644,139 is a continuation of application No. 13/217,703, filed on Aug. 25, 2011, granted, now 9,004,068, issued on Apr. 14, 2015.
Claims priority of provisional application 61/519,603, filed on May 25, 2011.
Prior Publication US 2022/0331617 A1, Oct. 20, 2022
Int. Cl. A62B 7/02 (2006.01); A62B 9/02 (2006.01); A62B 18/02 (2006.01); A62B 9/04 (2006.01); F17C 1/00 (2006.01)
CPC A62B 7/02 (2013.01) [A62B 9/022 (2013.01); A62B 9/04 (2013.01); A62B 18/02 (2013.01); F17C 1/00 (2013.01); F17C 2201/0128 (2013.01); F17C 2270/025 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A compressed gas cylinder for a self-contained breathing apparatus, the cylinder including a pressure volume portion for containing a volume of gas pressurized to a service pressure of between about 5,000 psig and about 6,000 psig, the pressure volume portion having a length, a diameter, and a water volume;
wherein the pressure volume portion defines an operational parameter of the cylinder, the operational parameter being a relationship between free air capacity of the cylinder in liters and a rated service time in minutes, the operational parameter comprising one of: 1200 liters of free gas and 30 minutes of rated service time; 1800 liters of free gas and 45 minutes of rated service time; 2400 liters of free gas and 60 minutes of rated service time; and 3000 liters of free gas and 75 minutes of rated service time;
wherein at least one of the length and the diameter of the pressure volume portion is at least slightly less than at least one of a corresponding length and diameter of a compressed gas cylinder for a self-contained breathing apparatus having a service pressure of about 4500 psig; and
wherein the length and diameter of the pressure volume portion provide a weight reduction of from about 5% to about 12% as compared to a compressed gas cylinder for a self-contained breathing apparatus having a service pressure of about 4500 psig.