Claims
- 1. 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, and wherein said first open end comprises a nozzle; b) a predetermined amount of said fluid, wherein said fluid is selected from the group consisting of a lubricant, a fluid dye for said air conditioning or refrigeration systems, and combinations thereof, and wherein said fluid is maintained in said canister at about ambient pressure; and c) 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, and iii) a release valve on a second end of said flexible conduit, to engage with the service valve of the pressurized system, and wherein 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.
- 2. The canister of claim 1, wherein said canister is fabricated out of transparent material and includes a plurality of gradient markings; andwherein said nozzle is threaded.
- 3. The canister of claim 2, wherein said first open end comprises a threaded cap for engagement with said threaded nozzle.
- 4. The canister of claim 1, wherein said piston further comprises an O-ring.
- 5. The canister of claim 1, wherein said piston further comprises a recessed double O-ring.
Parent Case Info
This application is a continuation of U.S. patent application Ser. No. 09/557,831, filed Apr. 26, 2000, now U.S. Pat. No. 6,253,810, which is a continuation-in-part of U.S. patent application Ser. No. 09/535,368, filed Mar. 24, 2000, now U.S. Pat. No. 6,186,197, which is a continuation of U.S. Application Ser. No. 09/003,021, filed Jan. 5, 1998, now U.S. Pat. No. 6,050,310, which is a continuation-in-part of U.S. patent application Ser. No. 08/710,486, filed Sep. 18, 1996, now U.S. Pat. No. 5,826,636 the entire contents of which are hereby incorporated by reference and relied upon.
US Referenced Citations (12)
Non-Patent Literature Citations (1)
Entry |
Robinair Catalogue SA 956, 16258 Dye Injector, HVAC-R Edition, Nov. 1996. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
09/803690 |
Mar 2001 |
US |
Child |
10/146340 |
|
US |
Continuations (2)
|
Number |
Date |
Country |
Parent |
09/557831 |
Apr 2000 |
US |
Child |
09/803690 |
|
US |
Parent |
09/003021 |
Jan 1998 |
US |
Child |
09/535368 |
|
US |
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
09/535368 |
Mar 2000 |
US |
Child |
09/557831 |
|
US |
Parent |
08/710486 |
Sep 1996 |
US |
Child |
09/003021 |
|
US |
Reissues (1)
|
Number |
Date |
Country |
Parent |
09/803690 |
Mar 2001 |
US |
Child |
10/146340 |
|
US |