Tunnel boring machine disc cutters and related methods of manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jan 31, 2017
Issued Date -
N/A
app pub date -
Mar 8, 2013
filing date -
Mar 8, 2013
priority date (Note) -
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Abstract
In an embodiment, a disc cutter for use on a tunnel boring machine may include a shaft and a cutter assembly rotatably mounted on the shaft. The cutter assembly may include a cutter ring extending circumferentially about a central axis and one or more bearing apparatuses rotatably mounting the cutter assembly to the shaft. Each bearing apparatuses may include a rotor extending circumferentially about the central axis and a first plurality of superhard bearing elements distributed circumferentially about the central axis. Each first superhard bearing element may be attached to the rotor and may include a bearing surface. The bearing apparatuses may further include a stator extending circumferentially about the central axis and a second plurality of superhard bearing elements attached to the stator that are generally opposed to the first plurality of superhard bearing elements of the rotor.
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