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:
Mar. 03, 2015
Filed:
Apr. 30, 2012
Yung Kang Tso, Shanghai, CN;
Guanlong Chen, Shanghai, CN;
Yung Kang Tso, Shanghai, CN;
Guanlong Chen, Shanghai, CN;
Abstract
Paper shredder thickness calibration using a Hall effect torque detector coupled to a paper shredder motor, producing a signal corresponding to the paper shredder motor rotation, a controller receives the signal and determines a paper shredder motor torque from the signal corresponding to the rotation of the paper shredder motor, with the torque corresponding to shreddant thickness. Signal is compared to predetermined maximum signal beyond which overload is signaled. Also, a method of operating a paper shredder having a rotating motor to comminute shreddant, including providing a Hall effect rotor and sensor; creating a torque signal based on a full load motor torque, and comparing the current torque signal to the full load torque signal.