Storage Drop has announced the approval of its patent for the Hydraulic Compressed Air Energy Storage System by the United States Patent and Trademark Office, effective until December 2040.

[Lindsay Wilson] has a lawnmower engine which a few years ago he converted with the addition of a sleeve valve to run on compressed air. It’s not a steam engine because creating a safe and legal ...

Using PVC pipe as a pressure vessel for compressed air can be a fun and enjoyable hobby. It’s safe, too: while there are are reports of PVC pipe being the cause of accidents, these accidents ...