Patent ID: 11897643
Assignee: PRESERVATION SYSTEMS INC.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. A method to determine the amount of gas remaining within a gas-filled canister interconnected to an apparatus for modifying atmosphere within a sealable container comprising the following steps:
interconnecting a port of the apparatus to a port of the container;
pulling a vacuum within the container;
while pulling the vacuum, actuating a valve configured to control release of a gas from the gas-filled canister;
dispensing the gas from the gas-filled canister through the port of the apparatus, through the port of the container, and into the container;
sensing pressure within the container;
recording the pressure information sensed during the dispensing step;
storing the pressure information;
analyzing the pressure information in comparison to previous cycles; and
determining how many cycles of gas dispensing remain within the gas-filled canister,
wherein if the number of cycles remaining is less than a predetermined number of cycles, a notification is generated for a replacement of the gas-filled canister.