Abstract:
An adapter device with TEFLON gasket that stops vehicle a/c system leaks on most R134a Freon non-serviceable a/c hoses. The adapter device with TEFLON gasket makes the hose “serviceable” by replacing the damaged “non-serviceable” service port with a new “serviceable” service port and valve.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    On May 24, 2012, I filed a Provisional Patent Application with United States Patent and Trademark Office, which was assigned Application No. 61/651,351. Application No. 61/651,351 relates to my invention. 
     
    
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
       [0002]    “Not Applicable” 
       REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTING COMPACT DISC APPENDIX 
       [0003]    “Not Applicable” 
       BACKGROUND OF THE INVENTION 
       [0004]    Age, heat, and sometimes the tool used to charge a vehicle&#39;s a/c system with Freon damage the a/c unit&#39;s service port valves, which are located inside connecting hoses. When the service port valves are damaged, the unit leaks Freon. This reduces or ends the a/c unit&#39;s ability to blow cold air; and causes the Freon to be released into the atmosphere. 
         [0005]    Many of the R134a Freon vehicle hoses have non-serviceable valves. Thus, replacing a damaged service port valve requires replacement of the entire hose and completely recharging the a/c system with Freon, which is expensive. With my invention, non-serviceable hose replacement is not required to replace a damaged service port valve nor is a complete system recharge. With my invention, individuals with a minimum of mechanical skills can repair their R134a Freon service port leak without paying a repair shop hundreds of dollars. Likewise, auto repair shops making the repairs will save their customers substantial money because of the cost differential between the invention and new non-serviceable hoses and the cost Freon for a complete recharge. 
       BRIEF SUMMARY OF THE INVENTION 
       [0006]    For those vehicles with non-serviceable hoses, the invention stops R134a Freon from leaking out of the service port a/c line, hose or dryer on vehicle a/c systems without replacing the hoses. The invention makes the hoses “serviceable” by replacing the damaged “non-serviceable” service port valve with a new “serviceable” service port adapter and valve. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0007]    The objectives and advantages of my invention are illustrated by the three pages of drawings that show the parts that makeup the complete adapter device and represent the preferred embodiment of my invention: 
           [0008]      FIG. 1  shows the Schrader valve for refrigerant 
           [0009]      FIG. 2  is an exploded view of the component parts of the High Pressure Side R134a Service Port Aluminum Adapter Device. 
           [0010]      FIG. 3  is an exploded view of the component parts of the Low Pressure Side R134a Service Port Aluminum Adapter Device. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0011]    The invention allows a vehicle owner or professional mechanic to repairs R134a Freon leaks in a vehicle&#39;s a/c system without having to replace non-serviceable hoses and completely recharge the a/c system with R134a Freon. Because of the cost differential between non-serviceable replacement hoses and R134a Freon and the invention, the invention is an inexpensive alternative solution to repairing Freon leaks. 
         [0012]    The invention is made by manufacturing part ( 3 ), a High Pressure Side Service Port Adapter Device, illustrated in  FIG. 2  and part ( 5 ), a Low Pressure Side Service Port Adapter Device, illustrated in  FIG. 3 , from aluminum hex bars (hex bars are used to enable the adapter devices to be wrenched tight on installation) machined down to the specifications: for part ( 3 ), top of device I.D. 8 MM, middle of device O.D. 16 MM and bottom of device O.D. 8 MM and machined down to the specifications for part ( 5 ), top of device I.D. 8 MM, middle of device O.D. 13 MM and bottom of device O.D. 8 MM, which specifications are necessary to ( 1 ) screw parts ( 3 ) and ( 5 ) into a vehicle&#39;s non-serviceable High and Low Side service ports, ( 2 ) accept part ( 1 ) illustrated in  FIG. 1 , the Schrader Valve for refrigerant with a 5.30 mm×0.706 pitch, and ( 3 ) accept the Hi-Low quick connect service line for R134a Freon charging. 
         [0013]    Part ( 4 ) illustrated in  FIGS. 2 and 3  is a Teflon Gasket stamped-out from a sheet of Teflon to specification, 1/32 of an inch thick, to effectuate a seal between the serviceable and non-serviceable ports. Note: Part ( 1 ) illustrated in  FIG. 1  (the Schrader Valve for refrigerant with a 5.30 mm×0.706 pitch) and part ( 2 ) in  FIG. 2  (R134a Red Plastic Cap for High Pressure Side) and the part ( 6 ) in  FIG. 3  (R134a Blue Low Side Cap), are not manufactured by the inventor. Those parts are purchased “off the shelf” for use in the invention. 
         [0014]    The preferred embodiment of the invention works was follows: 
         [0015]    Parts ( 3 ) and ( 5 ) illustrated in  FIGS. 2 and 3  are the High and Low Side Service Ports Adapter Devices respectively, which act as adapters and the housing for part ( 1 ) illustrated in  FIG. 1 , a Schrader Valve for refrigerant with a 5.30 mm×0.706 pitch. When parts ( 3 ) and ( 5 ) illustrated in  FIGS. 2 and 3  (which each contain part ( 1 ) illustrated in  FIG. 1 ) are screwed into the non-serviceable service ports of the vehicle&#39;s a/c system, the original leaking Schrader Valve for refrigerant is replaced. Part ( 4 ) illustrated in  FIGS. 2 and 3 , is a Teflon Gasket. When ( 4 ) is placed between the High and Low Side Service Ports Adapter Devices and the non-serviceable service ports of the vehicle&#39;s a/c system, it acts as a seal between the non-serviceable service ports and the new serviceable service ports, which allows part ( 1 ) illustrated in  FIG. 1 , to prevent the R134a Freon from leaking from the vehicle&#39;s a/c system. 
         [0016]    The preferred embodiment of the invention is assembled and installed as follows: 
         [0017]    High Side service port adapter assemblage: Take part ( 3 ) illustrated in  FIG. 2 , the High Side R134a Service Port 16 mm O.D. Aluminum Adapter Device, insert part ( 1 ) illustrated in  FIG. 1  (the Schrader Valve for refrigerant with a 5.30 mm×0.706 pitch) into part ( 3 ), then place part ( 4 ), the Teflon Gasket, on the threaded bottom of part ( 3 ), attach to Hi Side non-serviceable service port and then screw on part ( 2 ) illustrated in  FIG. 2 , the R134a Red High Side Cap, onto part ( 3 ). 
         [0018]    Low Side service port assemblage: Take part ( 5 ) illustrated in  FIG. 3 , the Low Side Service Ports Adapter Device, insert part ( 1 ) illustrated in  FIG. 1  (the Schrader Valve for refrigerant with a 5.30 mm×0.706 pitch) into part ( 5 ), then place part ( 4 ), the Teflon Gasket, on the threaded bottom of part ( 5 ), attach to Low Side non-serviceable service port and charge with Freon then screw on part ( 6 ) illustrated in  FIG. 3 , the R134a Blue Low Side Cap, onto the part ( 5 ). 
         [0019]    Installation of both the invention&#39;s low-side and high-side a/c service port adaptors is done as follows: (Note: if one is only installing one of the adaptors use Step 2 for installing the low-side a/c service port adaptor or Step 3 for the high-side adaptor. 
         [0020]    STEP ONE: To install the invention, one must first locate and identify the correct a/c service port on the vehicle to attach the appropriate adaptor device. The vehicle&#39;s low-side has a larger line with a smaller service port connecter. The vehicle&#39;s high-side has a smaller line with a larger service port connecter. 
         [0021]    STEP TWO: Install the invention&#39;s low-side a/c service port adaptor: Remove the Blue Cap adapter device, parts ( 1 ), ( 5 ) and ( 6 ), from the package. Install part ( 4 ), the Teflon gasket, onto the threaded end. Then twist the Blue Cap adapter device (small) into the vehicle&#39;s low-side service port (large line-small port) It will take a 13 mm wrench to snugly tighten the low-side a/c service port adaptor onto the vehicle&#39;s low-side a/c service port. 
         [0022]    STEP THREE: Install the high-side a/c service port adaptor: Remove the Red Cap adapter device, parts ( 1 ), ( 3 ) and ( 2 ), from the package. Install part ( 4 ), the white Teflon gasket, onto the threaded end. Then twist the Red Cap (large) into the vehicle&#39;s high-side service port (small line-large port). It will take a 16 mm wrench to snugly tighten the adapter device high-side a/c service port adaptor onto the vehicle&#39;s high-side a/c service port. 
         [0023]    STEP FOUR: The a/c system is now ready to be charged with Freon as needed through the low-side a/c service port.