The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 1990
Filed:
Oct. 07, 1988
Thomas V Ottersbach, Normandy, MO (US);
Emerson Electric Co., St. Louis, MO (US);
Abstract
An electric motor includes a fan attached to the end of a rotor shaft extending through an opening in an end shield of the motor housing. The fan forces air about the housing to cool the motor components. A motor protector including a temperature sensor is connected to the stator windings and is sensitive to winding temperatures to shut off the motor when the temperatures exceed a predetermined level. A performed strip of material is positioned over the protector in a tent-like form to block flow of cooling air around the protector. Thus, the protector is kept sensitive to the winding temperature, the material block preventing the protector being influenced by the flow of cooling air within the motor.