US 11,896,855 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 Mar. 14, 2022, as Appl. No. 17/694,010.
Application 17/694,010 is a continuation of application No. 16/041,576, filed on Jul. 20, 2018, granted, now 11,273,332, issued on Mar. 15, 2022.
Application 16/041,576 is a continuation of application No. 14/088,537, filed on Nov. 25, 2013, granted, now 10,029,130, issued on Jul. 24, 2018.
Application 14/088,537 is a continuation of application No. PCT/US2012/037977, filed on May 15, 2012.
Application PCT/US2012/037977 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 2022/0193463 A1, Jun. 23, 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)] 12 Claims
OG exemplary drawing
 
1. A method for providing gas to a user, comprising:
charging a compressed gas cylinder having a pressure volume with a gas to a service pressure of about 5,400 psig to about 6,000 psig;
reducing the pressure of the gas from a first pressure to a first reduced pressure;
reducing the pressure of the gas from the first reduced pressure to a second reduced pressure; and
transmitting said gas at the second reduced pressure to a user mask portion;
wherein at least one of a length and a diameter of the pressure volume portion are selected to provide a weight reduction as compared to 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 are selected to 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.