Method for providing access to underground valve stems and tool

Details Method for providing access to underground valve stems and tool Method for providing access to underground valve stems and tool

1986-11-10

1989-02-21

Schmidt, Frederick R.

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

7138, 134 8, 134 221, B08B 700

Patent

active

048061700

ABSTRACT:
A method for obtaining access to the end of a valve stem of a valve in a buried water main having a gate can extending from the valve to the surface. The gate can may be filled with debris or other material which has become solidified so that it cannot be removed with a known type of tool. An additional or accessory tool is provided having a blade which can be inserted into the gate can and utilized to break up, granulate or pulverize the material in the gate can. The accessory tool is operated by a manual operating tool. After the material has thus been broken up, a second tool is used which is of a type which can be inserted into the gate can and operated to collect the granulated or pulverized material and to remove it from the gate can. Both of the tools can be operated by a single manual operating tool or instrumentality having an extensible handle and which is also usable to operate a nut at the end of the valve stem after access has been obtained.

REFERENCES:
patent: 876675 (1908-01-01), Albrecht
patent: 1807625 (1931-06-01), Hjorth
patent: 1945304 (1934-01-01), Beagle
patent: 3123163 (1964-03-01), Overby
patent: 3715168 (1973-02-01), Kuhn
patent: 3854727 (1974-12-01), Alexander
patent: 4601077 (1986-07-01), Doty

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