Adaptor for earth boring machine
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United States of America Patent
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-
Jul 20, 1993
Grant Date -
N/A
app pub date -
Feb 27, 1990
filing date -
Feb 27, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An adaptor assembly for an earth boring machine includes a thrust bearing housing removably attachable to the bulkhead plate of an earth boring machine surrounding the torque hub flange. A rear drive flange is attached to the torque hub and a front drive flange is mounted within the housing and carries a thrust bearing movable into and out of contact with the housing. The front drive flange has an extension which projects beyond the housing for attachment of an auger and boring head and is connected to the rear drive flange for rotational movement therewith and axial movement relatively thereof.
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