Expansion plug and tool

Details Expansion plug and tool Expansion plug and tool

1987-08-14

1989-04-25

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

811251, 81437, B25B 1302

Patent

active

048236519

ABSTRACT:
An expansion plug element for insertion in the inlet line of a gas meter for blocking the flow of gas to the meter and a tool for inserting the expansion plug in the inlet leg of the gas service line and removing the expansion plug from the inlet leg. The expansion plug is characterized by a carriage bolt fitted with a pair of washers spanning a flexible washer and provided with a nut for tightening the washers against the flexible washer and wedging the expansion plug in the inlet leg. The tool element further includes a tool sleeve having a nut slot in one end for engaging the nut on the carriage bolt and an internally-threaded, thread-engaging end for engaging the threads on the carriage bolt and removing the expansion plug from the inlet leg of the gas service line.

REFERENCES:
patent: 1438269 (1922-12-01), Sehrt
patent: 1919666 (1933-07-01), Patterson

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