Patent ID: 6186197
Filing Date: 2001-02-13
Classification: F16N,F17C,F25B

Abstract:
A canister for charging a closed, pressurized air conditioning or refrigeration system with a fluid, comprising:a) a closed, non-pressurized cylindrical canister, wherein said canister has two ends, a first open end which connects to the system being charged and a second open end, andwherein said first open end comprises a nozzle;b) a predetermined amount of said fluid,wherein said fluid comprises a lubricant and a fluid dye for said air conditioning or refrigeration systems, andwherein said fluid is maintained in said canister at about ambient pressure; andc) a piston sealably disposed with said second open end of said canister,wherein said canister is adapted to sealably and releasably connect to said pressurized air conditioning or refrigeration system via fluidly coupling means to form a closed binary system,wherein said fluidly coupling means is a connector assembly having a first end connected to said nozzle of said canister and a second end connected to a service valve of the pressurized system,wherein said connector assembly comprises:i) a flexible conduit,ii) a thread on a first end of said flexible conduit, to engage with said nozzle of said canister, andiii) a release valve on a second end of said flexible conduit, to engage with the service valve of the pressurized system, andwherein said connector assembly further comprises a valve at one end of said flexible conduit, which prevents any material from back flushing into and contaminating said fluid in said canister.