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:
Dec. 25, 2018
Filed:
Dec. 12, 2014
Robert Bosch Gmbh, Stuttgart, DE;
Bharadwaja Maharshi Ramaswamy, Bangalore, IN;
Yeshwanth Sampangi Ramaiah, Bangalore, IN;
Vishwanatha Manevarthe Srikantiah, Bangalore, IN;
Robert Bosch Tool Corporation, Broadview, IL (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A power tool includes a moving implement, implement arrest mechanism, light emitters, photodetector, and controller. The controller activates a first emitter to direct light with a wavelength between 800 nm and 1100 nm on an object and identifies a first reflectance level of the object from a reflectance signal from the photodetector. The controller activates a second emitter to direct light with a wavelength between 1350 nm and 1800 nm on the object and identifies a second reflectance level of the object from the photodetector. The controller activates the implement arrest mechanism to prevent contact between the object and the moving implement if a ratio corresponding to the first identified reflectance level and the second identified reflectance level exceeds a predetermined threshold.