Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2000-09-25
2002-08-20
Nguyen, Tran (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S049540
Reexamination Certificate
active
06437469
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a heat dissipating device that removably secures around a motor, forming a collar around the exterior of the motor that serves as a heat sink for the motor.
2. Description of the Related Art
The life of motors, such as those that are employed in heating and air conditioning units, could be increased if there was a way to retrofit the motor with a heat dissipating device so that the motor would run cooler. Such a device would need to be easily installable or replaceable in the field, would need to be constructed of material that conducts heat away from the motor effectively, and that would need to be relatively inexpensive to manufacture.
The present invention meets all of these demands. The present invention consists of two identical halves that can be quickly and removably secured together at the edges of the halves to form a collar around a motor. The present invention can, with the aid of a couple of clamps be secured to a motor in the field. The present invention is inexpensive to manufacture and is constructed of material and in a configuration that effectively dissipate heat from the motor to which the invention is attached.
SUMMARY OF THE INVENTION
The present invention is a heat dissipating collar for a motor that consists of two identical halves that removably secure together at their ends to form a circular collar that encircles a motor. Each half has a base portion with an arcuate internal surface that rests against an exterior surface of the motor when the collar is secured around the motor so that the arcuate internal surfaces of the base portions receive heat directly from the motor.
Each half is provided with an outwarding extending J-shaped arm on one end of the half and with a second outwardly extending straight arm on an opposite end of the half so that the straight arms of each of the halves are removably received in the J-shaped arms of the other half in order to secure the halves around the motor. A clamp holds the two pairs of ends together. Each of the straight arms is provided with a pair of raised lips to accommodate a clamp for the purpose of securing the straight arm to its associated J-shaped arm.
Each of the halves is provided with a plurality of individual, spaced apart fins radiating outwardly from the base portion of the half so that heat received by the base portion from the motor is transferred from the base portion to the fins and dissipates to the surrounding air from the fins. Each fin is secured to the base portion of its respective half and extends outward from the base portion. Each fin is aligned along the longitudinal axis of the collar so that air flowing longitudinally along the motor flows between the adjacent fins. Also, each of the fins is tapered along its length so that each fin has a thicker width at a proximal end of the fin than its width at its distal end. This tapered configuration allows for better heat transfer between the proximal and distal ends of the fins and allows for better heat dissipation.
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Braun Eric E.
Davis Richard J.
Aaon, Inc.
McKay Molly D.
Nguyen Tran
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