Device for automatically lapping valve seat

Details Device for automatically lapping valve seat Device for automatically lapping valve seat

1975-09-15

1977-02-15

Smith, Al Lawrence

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51170PT, 51 34J, B24B 900, B24B 2300

Patent

active

040075613

ABSTRACT:
The disclosed device comprises a supporting disc, a sleeve centrally pendent from the disc, a hollow driven shaft rotatably and axially slidably extending through the disc and sleeve, and a lapping disc fixed to that end of the shaft extending from the sleeve. With the supporting disc disposed upon a valve body including a valve seat to be lapped, the lapping disc can contact the valve seat to fit it during the rotation of the shaft. With the lapping disc raised from the lapped valve seat, a wiper on the disc is actuated to wipe the latter. The seat can be observed through a periscope type observation glass extending through the hollow shaft.

REFERENCES:
patent: 2443489 (1948-06-01), Weynano
patent: 2722785 (1955-11-01), Porter et al.
patent: 3034269 (1962-05-01), Bettenhausen

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