ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,434,516, issued on Oct. 7.
"Pressure sensitive valve core" was invented by Drew M Woolsey (Helena, Mont.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pressure sensitive valve core usable within a valve stem of an inflatable or pressurized apparatus and configured to automatically maintain a manufacturer's recommended air pressure within the inflatable or pressurized apparatus throughout fluctuations in temperature and elevation, and to regulate the amount of air pressure being put into the inflatable or pressurized apparatus according to a manufacturer's recommended air pressure. The pressure sensitive valve core includes a body and a spring valve me...