Alignment device
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United States of America Patent
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-
Jul 11, 2000
Grant Date -
N/A
app pub date -
Jan 30, 1998
filing date -
Jan 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for aligning a motor shaft coupled to an input shaft supported by a bearing in a driven device, comprising a nut adapted for mounting on the driven device and a washer adapted for mounting on the bearing. The nut has an inner edge, an outer edge and a bottom surface having a concave spherical curvature. The washer has an upper surface with a convex spherical curvature corresponding to the concave spherical curvature of the nut. The spherical curvature of the washer has sufficient clearance for sliding against the spherical curvature of the nut. When the nut is mounted to the driven device and the washer is mounted to the bearing, the spherical surfaces of the nut and washer mate. The spherical surface of the washer can slide against the spherical surface of the nut to compensate for angular stresses on the shaft and maintain precise alignment of the motor shaft at all times. The invention also comprises a gearbox having the alignment device mounted therein.
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