Apparatus for testing the surface quality of a vessel mouth

Details Apparatus for testing the surface quality of a vessel mouth Apparatus for testing the surface quality of a vessel mouth

1976-12-09

1977-11-01

Woodiel, Donald O.

Measuring and testing

With fluid pressure

Leakage

73 498, G01M 332

Patent

active

040559858

ABSTRACT:
An apparatus for testing the surface quality of a vessel mouth including a test head adapted to be placed over the vessel mouth, a line connecting the test head to a supply of test gas, a passageway through the test head for introducing gas into the vessel, and a pressure measuring instrument connected to the gas line for generating an electrical signal when a pressure change of a predetermined tolerance value occurs. A sealing washer of spring stiffness is mounted on the test head for bearing against the vessel mouth and a valve is provided in the test head to open the passageway when the washer is pressed against the vessel and to close the passageway when the test head is removed from the vessel. In addition, the sealing washer and valve may be pivotable and means for generating a fault signal may be provided for generating a signal when the washer has been pivoted a predetermined amount.

REFERENCES:
patent: 3247707 (1966-04-01), Tatro
patent: 3390569 (1968-07-01), McMeekin
patent: 3496761 (1970-02-01), Powers, Jr.

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