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:
May. 22, 2018
Filed:
Mar. 12, 2014
Robert Bosch Tool Corporation, Broadview, IL (US);
Robert Bosch Gmbh, Stuttgart, DE;
Jan Koegel, Oak Park, IL (US);
Robert Bosch Tool Corporation, Broadview, IL (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A power table saw has a saw blade driven by a motor with power selectively supplied to the motor by actuation of a switch. A riving knife is selectively positioned in an extended position and a retracted position relative to the blade. A blade guard is removably mounted to the riving knife above the blade. A sensible element on the riving knife can be detected by a first sensor when the riving knife is retracted, the first sensor has a non-null state when the sensible element is adjacent the first sensor and a null state otherwise. A second sensor has a null state when the blade guard is detected and a non-null state otherwise. A controller determines the states of the sensors and disengages power to the motor when the switch is actuated when the states of the sensors are different.