Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1984-08-30
1986-07-22
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
H02K 524
Patent
active
046021760
ABSTRACT:
Means for reducing mechanical vibration or acoustical noise between a dynamoelectric machine (e.g., an electric motor) and its application is disclosed in which the endshield of the motor has at least one stud extending therefrom. The application (e.g., a washing machine transmission) has an application frame with at least one aperture therein coaxially receiving the stud. An elastomeric grommet having a bore therethrough receives at least a portion of the stud and the grommet bears on the endshield of the motor and on the application frame. A first portion of the stud, which protrudes beyond the endshield, has a cross section substantially equal to the cross section of the grommet bore, and the grommet has another portion thereof between the outer end of the first portion of the stud and the application frame, with this last-said portion of the grommet being clear of the stud so that it is unrestricted by the stud so as to substantially freely permit lateral shear of the elastomeric grommet thereby to effectively damp vibration and/or noise between the application and the motor.
REFERENCES:
patent: 2188807 (1940-01-01), Castricone
patent: 3941339 (1976-03-01), McCarty
patent: 4425813 (1984-01-01), Wadenstein
Duggan Donovan F.
Emerson Electric Co.
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