Reliance Electric Technologies, LLC

William L Subler

Harvey A Trickel

Stephen Douglas Browne

Stephen T Evon

T Wayne Paschall

Jack Byron Whitley

The present invention provides for a system and method for facilitating cooling of a totally enclosed motor. A first thermal barrier is coupled to a first end bracket and is operable to insulate bearings from internal heat produced by the motor. Either an external fan located opposite the drive end of the motor, an externally mounted blower, or free ambient air convection may be employed to provide cooling air to the motor. An air deflector is coupled to the drive end of the motor to capture the cooling air and direct it as high velocity air over the first end bracket thereby keeping the bearings supported within the first end bracket cool. Alternatively, an external fan may be coupled to the drive end of the motor to provide cooling air to the first end bracket.

Thermal barrier and cooling air deflector for totally enclosed motor

A technique is provided for sealing a bearing cavity in a rotating machine such as an electric motor. The bearing cavity is defined by annular elements on either side of an antifriction bearing set. Seals are provided on the sides of the bearing cavity and are secured to a support structure, such as the motor housing, and include elements which ride against the rotating shaft during operation. The seals exert a sealing force against the rotating element which results at least partially from internal pressure within the bearing cavity provided by a pressurized lubricant stream. The lubricant stream is provided in the form of an airborne oil mist.

Seal arrangement for an electric motor

The rotatable shaft of a large machine is blocked using a plurality of preloaded springs held by a collar member secured to the housing of the machine so as to prevent the roller bearing supporting the non-drive end of the shaft from being damaged during shipment of the machine.

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Moore, SC, United States of America

William L Subler