Air conditioner charging station with same refrigerant return and method
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United States of America Patent
Stats
-
Jan 8, 1991
Grant Date -
N/A
app pub date -
Dec 10, 1987
filing date -
Dec 10, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An air conditioner charging station withdraws refrigerant from an air conditioner, reclaims it by removing certain materials, and returns the reclaimed refrigerant to the same air conditioner from which it was withdrawn, and also provides new, make-up refrigerant to the air conditioner, in the amount necessary to make a full charge. A microprocessor provides a diagnostic capability, and includes tables of acceptable values of parameters, such as air discharge temperature, suction pressure, etc., for different automobile makes and air conditioner types; provision is made for adjusting the acceptable ranges of such values due to one or more ambient factors, of which ambient relative humidity may be one. The microprocessor, after comparing actual values to acceptable value ranges of the air conditioner operating values, displays possible causes of air conditioner malfunction on a video screen. Self-testing of both the microprocessor and associated electrical elements, and of mechanical elements such as conduits, valves and a scale is performed. The operator may command the microprocessor to display, in smaller print, a relatively large volume of detailed instructional material dealing with specific checking procedures or repair. A separator is provided which has a float-operated switch to limit the amount of liquid accumulated in it, and has an inlet spaced from the float, and a support for dessicant located above the maximum liquid level.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- SNAP-ON TOOLS CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Eichenlaub, Dennis P | Kingstown, MD | 3 | 207 |
Proctor, Robert H | Rossville, MD | 15 | 429 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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