Bit attaching arrangement for power tool

A bit attaching arrangement for a power tool, the power tool having a rotatably driven shaft onto which the bit is attached, the arrangement comprising:

• a bit locking member rotatable with respect to the shaft, said bit locking member having a first gear so that rotation of said first gear causes rotation of said locking member, the shaft having a second gear so that rotation of said second gear causes rotation of the shaft;
• and
• a rotatable third gear which engages said first and second gears simultaneously;
• wherein said third gear is positionable between a first position wherein it engages both said first and second gears and a second position wherein it does not engage either of said first or second gears;
• and
• wherein rotation of said third gear while the third gear is in the first position results in counter rotation between said bit locking member and the shaft so that securement of the bit to the shaft is accomplished.

A router having a rotatably driven shaft onto which a bit is attached and rotated therewith through the use of a collet, the arrangement comprising:

• a collet nut threadably engaging the shaft, said collet nut having a first gear so that rotation of said first gear causes rotation of said nut;
• a second gear secured to the shaft so that rotation of said second gear causes rotation of the shaft;
• and
• a rotatable third gear which engages said first and second gears simultaneously;
• wherein rotation of said third gear results in counter rotation between said collet nut and the shaft so that securement of the bit to the shaft is accomplished.

A router having a rotatable driven shaft onto which a bit is attached and rotated therewith through the use of a collet, the arrangement comprising:

• a collet nut threadably engaging the shaft, said collet nut having a first gear so that rotation of said first gear causes rotation of said nut, the shaft having a second gear so that rotation of said second gear causes rotation of the shaft;
• and
• a rotatable third gear which engages said first and second gears simultaneously;
• wherein said third gear is positionable between a first position wherein it engages both said first and second gears and a second position wherein it does not engage either of said first or second gears;
• and
• wherein rotation of said third gear while the third gear is in the first position results in counter rotation between said collet nut and the shaft so that securement of the bit to the shaft is accomplished.

A router having a rotatably driven shaft onto which a bit is attached through a collet, the arrangement comprising:

• a collet nut rotatable with respect to the shaft, said collet nut having a first gear so that rotation of said first gear causes rotation of said nut;
• a pinion shaft having a second gear disposed on one end thereof said shaft rotatably and slidably mounted to the router, said shaft having a first position wherein said second gear engages said first gear so that rotation of said shaft will result in rotation of said first gear with respect to the shaft so as to secure the bit to the shaft, and a second position wherein said second gear is disengaged from said first gear;
• and
• a yoke associated with said pinion shaft and slidable with respect to the router, said yoke having an indentation formed on one end, said indentation engaging said collet nut when said pinion shaft is in its first position and disengaging said collet nut when said pinion shaft is in its second position, said yoke retaining said second gear in one position relative to the collet nut when said second gear engages said first gear.

A bit attaching arrangement for a power tool, the power tool having a rotatably driven shaft onto which the bit is attached, the arrangement comprising:

• a bit locking member rotatable with respect to the shaft;
• a first rotatable gear, wherein rotation of said first gear causes rotation of said bit locking member;
• and
• a second gear, wherein rotation of said second gear causes rotation of the shaft;
• wherein said first and second gears are counter rotated to result in securement of the bit to the shaft.