Patent ID: 9243674
Filing Date: 2016-01-26
CPC Classification: B23Q,B24B,B25F,F16D,H02K,H02P

Claim Text:
1. A power tool braking device of a portable power tool, comprising: at least one magnetic field braking unit including a first braking element, a second braking element and a third braking element, the first braking element being moveable with respect to the second braking element; and at least one mechanical activation unit positioned on a side of the at least one magnetic field braking unit opposite at least one drive unit of the portable power tool and including a mechanical actuation switch configured to move a lever arm in engagement with the first braking element to move the first braking element with respect to the second braking element between relative positions to selectively change a characteristic of a magnetic field generated between the first braking element and the second braking element to selectively brake the third braking element.