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:
Oct. 05, 1976
Filed:
Apr. 02, 1975
Applicant:
Inventor:
Osten Schwartz, Varmdo, SW;
Assignee:
Aktiebolaget Electrolux, Stockholm, SW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
317 / ; 317 / ; 317 / ; 337 54 ; 337 90 ; 337367 ; 15339 ;
Abstract
A control unit for an electric motor in a vacuum cleaner which stops the motor when the motor temperature exceeds a certain level. The control unit is utilized with a vacuum cleaner having a low voltage circuit for controlling the motor speed and is simple and inexpensive, as well as safe in operation.