November 1, 2005

Power tool 1 may include table 5 on which work W is positioned. A portion of a circular blade 3 protrudes above table 5. Circular blade 3 may be driven by a motor. The motor may be controlled by a control device 90. Work W is cut by means of an operator sending work W positioned on an upper face of table 5 in the direction of the circular blade 3 while circular blade 3 is being driven by the motor. Power tool 1 may include first radar device 86 and second radar device 87 for monitoring a predetermined area in the vicinity of circular blade 3. First radar device 86 may detect whether objects other than work are present in the vicinity of a outer edge of circular blade 3. Second radar device 87 may detect the location of objects moving within the predetermined area in the vicinity of circular blade and detects the speed at which the objects are moving in the direction in which work is sent. Control device 90 may cause an emergency halt of the motor in the case where first radar device 86 detects that an object other than work is present in the vicinity of the outer edge of circular blade 3. Further, Control device 90 may cause an emergency halt of the motor in the case where an object detected by second radar device 87 has a predetermined positional relationship relative to circular blade 3 and the detected speed exceeds a predetermined value.

6

November 1, 2005

10/706,514

November 12, 2003

83/58   83/370 83/477.2 83/76.1 83/DIG.1

B23D   59/00   (20060101)   B23Q   17/24   (20060101)   B23Q   11/00   (20060101)   B23Q   5/00   (20060101)   B23Q   5/58   (20060101)   B27G   19/00   (20060101)   B27G   19/02   (20060101)   F16P   3/14   (20060101)   F16P   3/00   (20060101)  

Nov 12, 2002 [JP] 2002-328837 Mar 24, 2003 [JP] 2003-081399

83/58   83/62   83/63   83/72   83/76.1   83/76.6   83/7   83/8   83/9   83/10   83/11   83/12   83/13   83/14   83/15   83/16   83/17   83/18   83/19   83/20   83/21   83/22   83/23   83/24   83/25   83/26   83/27   83/28   83/29   83/30   83/31   83/32   83/33   83/34   83/35   83/36   83/37   83/38   83/39   83/40   83/41   83/42   83/43   83/44   83/45   83/46   83/47   83/48   83/49   83/50   83/51   83/52   83/53   83/54   83/55   83/56   83/57   83/58   83/59   83/60   83/61   83/62   83/63   83/64   83/65   83/66   83/67   83/68   83/69   83/70   83/71   83/72   83/73   83/74   83/75   83/76.9   83/370   83/477.2   83/DIG.1   192/129R   192/125R   192/116.5   342/109   342/110   342/111   342/112   318/362   700/253   700/255  

7173537 - Device for protecting against accidental contact and method for protecting against accidental contact of a displaceable part - Owned by Robert Bosch GmbH (Stuttgart,DE) The device according to the invention has a sensor (5) for generating and detecting an electromagnetic field situated in the vicinity of a moving part (1) that should not be touched. The device according to the invention also has an evaluation unit (8) that is connected to the sensor (5) in order to evaluate sensor signals that can be generated by the sensor (5), wherein the evaluation unit (8) can generate an evaluation signal. Finally, a control unit (9) connected to the evaluation unit (8) is provided, which is designed and can be operated so as to control the movement of the part (1) as a function of the evaluation signal.

7421932 - Power cutting tool comprising a radar sensing system - Owned by Power Tool Institute (Cleveland, OH) A power cutting tool having a movable blade, such as a table saw, comprising a radar sensing system for movement of an object in a region near the blade is disclosed. The radar sensing system emits a radio frequency wave and receives wave energy reflected by the object. The system measures the Doppler shift of the received wave energy to detect the presence of a fast moving object in a zone near the blade. When such a condition is detected, a reaction system can be activated to mitigate the condition.