초록

The pressure test gauge assembly is a metal valve body interchangeably connected to one of a set of three transparent color coded gauge bodies, each gauge assembly being protected by a color coded transparent sheath when not in use.

대표청구항 ▼

[ I claim:] [1.] A pressure test gauge assembly comprising:a metal tubular body containing a pressure valve stem, said metal tubular body having an internal diameter, a proximate end having internal threading and a distal end having internal threading;a set of interchangeable transparent tubular pla

[ I claim:] [1.] A pressure test gauge assembly comprising:a metal tubular body containing a pressure valve stem, said metal tubular body having an internal diameter, a proximate end having internal threading and a distal end having internal threading;a set of interchangeable transparent tubular plastic gauge bodies having an external surface, each of said plastic gauge bodies having a color coded graduated pressure indicia on said external surface, an internal diameter corresponding to that of the metal tubular body, an open proximate end with an external threading removably engaging the internal threading of the distal end of said metal tubular body, a substantially closed distal end dome-shaped with a centered aperture, and containing a compression spring abutting a piston which abuts the open proximate end; anda set of transparent tubular plastic sheath bodies removably enclosing said gauge bodies, each of said sheath bodies having an open proximate end and a closed distal end, wherein a maximum pressure rating is color coded on said external surface;wherein the metal tubular body and each of the sheath bodies are interchanged to identify a selected maximum pressure rating.