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:
Aug. 07, 1979
Filed:
Jan. 09, 1978
Bradley C Eaton, Pompton Plains, NJ (US);
Thomas M Taylor, Flanders, NJ (US);
The Singer Company, New York, NY (US);
Abstract
An upright vacuum cleaner having a brush roller rotatably driven by a belt from the cleaner motor and having a safety device for protecting the belt and motor when the brush rotation falls below a predetermined speed. The device includes a magnet in the brush roller, a rotation sensing circuit for generating a pulse for each revolution of the magnet and a motor shut-off circuit controlled by the sensing circuit to shut-off power to the motor when the pulse rate falls below that desired.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile