Lapping machine

Details Lapping machine Lapping machine

1989-06-19

1990-09-25

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51241A, B24B 1900

Patent

active

049584642

ABSTRACT:
Lapping machine for lapping the security valve and pressure relief valve body seats installed in all kind of operations working with fluids under pressure, such as nuclear power plants, power stations, petrochemical plants, refineries, cellulose industries, etc., capable of performing a disc motion or to-and-fro movement on the valve seat, comprises a lapping disc which is easily adapted to the valve seat due to the action of its ball joint. It also maintains a constant pressure of the lapping disc on the seat. Due to its easy operation it may be installed on all security valves no matter how difficult the situation is.

REFERENCES:
patent: 2338509 (1944-01-01), Hall et al.

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