Three position selector for automated chuck
First Claim
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1. A chuck assembly for a rotatable spindle, comprising:
- a cylindrical body having a forward section, a collar and a rearward section, the forward section having a center hole formed therethrough, the collar having a plurality of angularly disposed guide channels, and the rearward section being mountable to the spindle;
a plurality of jaw members slidably disposed in the guide channels, each jaw member having a threaded surface formed on an outer side thereof;
a nut disposed about the collar of the body in threaded engagement with the threaded surfaces of the jaw members;
a rotatable forward sleeve encasing a forward portion of the chuck assembly;
a rearward sleeve encasing a rearward portion of the chuck assembly;
an impactor ring disposed in the rearward sleeve and selectably engageable with the nut for adjusting position of the jaw members; and
a spring biasing the impactor ring into engagement with the forward sleeve, the forward sleeve being rotatable amongst at least three positions, wherein each position enables an operation which is not available in the other two positions.
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Abstract
A automated chuck is provided with at least three user selectable operating modes, thereby enabling different functions to be performed during tightening and loosening of the chuck. In one exemplary implementation, the different user selectable operating modes of the chuck may be used to actuate a motor direction switch of the drill.
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Citations
11 Claims
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1. A chuck assembly for a rotatable spindle, comprising:
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a cylindrical body having a forward section, a collar and a rearward section, the forward section having a center hole formed therethrough, the collar having a plurality of angularly disposed guide channels, and the rearward section being mountable to the spindle; a plurality of jaw members slidably disposed in the guide channels, each jaw member having a threaded surface formed on an outer side thereof; a nut disposed about the collar of the body in threaded engagement with the threaded surfaces of the jaw members; a rotatable forward sleeve encasing a forward portion of the chuck assembly; a rearward sleeve encasing a rearward portion of the chuck assembly; an impactor ring disposed in the rearward sleeve and selectably engageable with the nut for adjusting position of the jaw members; and a spring biasing the impactor ring into engagement with the forward sleeve, the forward sleeve being rotatable amongst at least three positions, wherein each position enables an operation which is not available in the other two positions. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A chuck assembly for a rotatable spindle, comprising:
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a rotatable cylindrical body having a forward section, a collar and a rearward section, the forward section having a center hole formed therethrough, the collar having a plurality of angularly disposed guide channels, and the rearward section being mountable to the spindle; a plurality of jaws members slidably disposed in the guide channels, each jaw member having a threaded surface formed on an outer side thereof; a rotatable nut disposed about the collar of the body in threaded engagement with the threaded surfaces of the jaw members, the nut having teeth extending therefrom; a rotatably fixed impactor ring having a plurality of impacting surfaces and an engagement member, the impacting surfaces selectably engageable with the teeth of the nut; and a mode selection mechanism enabling at least three modes of operation and having a sleeve encasing the forward portion of the body, the sleeve selectively rotatable relative to the impactor ring and having at least three recesses, each of the at least three recesses having a different axial depth, where the sleeve in a first position associated with a first mode of operation rotationally aligns the engagement member within a first recess such that the impacting surfaces of the impactor ring disengage the teeth of the nut, the sleeve in a second position associated with a second mode of operation rotationally aligns the engagement member within a second recess such that the impacting surfaces of the impactor ring at least partially engage the teeth of the nut, and the sleeve in a third position associated with a third mode of operation rotationally aligns the engagement member with a third recess such that the impacting surfaces of the impactor ring engage the teeth of the nut. - View Dependent Claims (9, 10, 11)
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Specification