Air conditioner refrigerant check gauge insert convertible to a

Details Air conditioner refrigerant check gauge insert convertible to a Air conditioner refrigerant check gauge insert convertible to a

1986-06-12

1987-09-15

Woodiel, Donald O.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

73744, 73756, B60C 2302, G01L 716

Patent

active

046931120

ABSTRACT:
A universal refrigerant system gas pressure check gauge with a valve head opening about a valve pin within the valve head opening that is shaped to fit on and over the low pressure suction side valve fitting of a refrigeration system with the valve stem of the refrigeration system suction side valve fitting engaging and being depressed by the gauge valve pin to open the valve. A resiliently compressible washer is held in the gas pressure check gauge valve head opening with a center opening in the washer that does not close on the valve pin in order that refrigerant gas may pass on through into valve head and gauge stem internal passages. The resiliently compressible washer is of such thickness as to be engaged and resiliently compressed by the end of the refrigeration system suction side valve fitting as the valve stem is being depressed by the gauge valve pin thereby sealing the valve fitting to the check gauge to insure that refrigerant materials leak very little if at all. The rectangular gauge indicator stem has at least one side with indication pressure zones- low, norm, hi, danger, and hi-pressure that are color coded as well, along with at least one other side pressure indication numbered. A tire valve stem insert guide is provided for the check gauge that when placed in the check gauge converts the gauge from a refrigerant check gauge to a tire check gauge and at least one side of the gauge indicator stem is pressure numbered for use of the check gauge as a tire gauge.

REFERENCES:
patent: 3696668 (1972-10-01), Patrick
patent: 4028936 (1977-06-01), Guy

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