US Patent Issued on Jan. 27 for "Pressure transition indicator and vacuum insulation panel equipped therewith for signaling loss of vacuum" (British Inventor)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,373, issued on Jan. 27.

"Pressure transition indicator and vacuum insulation panel equipped therewith for signaling loss of vacuum" was invented by Neil Refson (Kirkcaldy, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A remotely interrogatable pressure transition indicator (100) having a pressure sensitive element (110) interacting with a remotely interrogatable mechanical switch (120). The pressure sensitive element (110) is a hermetically sealed, gas impermeable, flexible walled sachet (110) containing a quantity of gas, operable for transitioning between inflated and deflated conditions induced by a change in external gaseous press...