Patent ID: 8640583
Filing Date: 2014-02-04
Classification: B23D,B27G,F16P,Y10T

Abstract:
1. A table saw comprising: a frame structure with a generally flat work surface; a rotatable circular blade mounted on an arbor and being adapted to have at least a portion of said blade extending above the flat work surface in position to cut a work piece; a drive motor with an output shaft mounted to the frame structure for powering the saw blade; a sensing mechanism for generating at least a first actuation signal responsive to predetermined sensed characteristics relating to the existence of a person in contact or in close proximity thereto; and a pyrotechnic actuator driven retracting mechanism located beneath said work surface for rapidly moving the blade downwardly below the work surface responsive to said first actuation signal being received, wherein said pyrotechnic actuator driven retracting mechanism has a pyrotechnic actuator for generating a moving force that is within the range of about 1000 to about 10000 pounds.