US 6,472,786 B1 · Bearing protection assembly for motors

Abstract

A bearing protection assembly protects a motor having a rotating shaft. The motor includes a bearing carried on the shaft, having one side proximal the motor and one side distal the motor. A support member is positioned adjacent the bearing's distal side and disposed about the shaft. A retaining member is disposed about the shaft, the retaining member and the support member and forms an annular cavity about the shaft. A non-lubricated seal is captured and may be compressed in the annular cavity precludes migration of moisture toward the bearing along the shaft. The seal is preferably made of expanded polytetrafluoroethylene. Alternative embodiments allow the seal to be positioned and secured in various ways with respect to the bearing.

Claims17

Dependent claims

A bearing protection assembly for a motor having a rotating shaft, the assembly comprising:

a bearing carried on the shaft, said bearing having one side proximal the motor and one side distal the motor;
a support member adjacent said bearing's distal side and disposed about the shaft;
a retaining member disposed about the shaft, said retaining member and said support member forming an annular cavity about the shaft;
and
a non-lubricated seal captured in said annular cavity, said seal precluding migration of moisture toward said bearing along the shaft,
wherein said support member and said retaining member form gaps with respect to the rotating shaft, and wherein compression of said non-lubricated seal between said support member and said retaining member cause expansion of said seal into said gaps.

3 more elements

Dependencies are inferred from the claim text.

Bearing protection assembly for motors

Life of this patent

Bearing protection assembly for motors

Life of this patent

Abstract

Claims17