Air conditioner refrigerant check guide
US4599903A · kind A · utility
Inventor
Key dates
| Filing date | Jun 3, 1985 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Jun 3, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L17/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A universal refrigerant system check gauge adapter in the form of an instrument of semi rigid yet flexible plastic having a bottom tube that is received in a valve head opening of a pressure gauge and about a valve pin within the valve head opening. The top end of the adapter has an opening shaped to fit on and over the low pressure suction side valve fitting of a refrigeration system. Internal projections within the bottom extended tube engage the end of the check gauge valve pin and a center projection within the adapter top end opening engages the valve stem of the refrigeration system suction side valve fitting so that as the check gauge is pushed toward the refrigeration valve fitting the refrigeration system valve is opened and refrigeration gases propelled from the refrigeration system enter the check gauge passing through the center opening of a resiliently compressible washer and through a port opening in the valve head. The end of the bottom tube compresses the resiliently compressible washer as the valve pin is brought into engagement with the ends of the internal projections thereby sealing the adapter to the check gauge and the adapter top end opening so fits the refri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.