Threaded object driving tool and method

A tool for threading an object into a workpiece comprising:

• a forward section adapted at the forward end thereof to engage a first portion of the object to be threaded into the workpiece;
• a rear section adapted at the rear end thereof to be rotationally driven and adapted at the forward end thereof to engage a second portion of the object to be threaded into the workpiece, the engagement of the object by both of said sections providing a rotational latch between the tool and the object,
• means for causing said rear section to move axially to engage the second portion of the object after the object has been engaged by said forward section so that rotation of the rear section in the insertion direction effects the rotation of the tool and the threading of the object into the workpiece,
• said means being responsive to the rotation of said rear section in the withdrawal direction to axially move said rear section relative to said forward section without rotating said forward section to thereby disengage said rear section from the object and thus unlatch the tool from the threaded object;
• and
• means operatively connected to the forward section and rear section for rotationally biasing said forward section relative to said rear section so that the forward section tends to remain motionless when the rear section is rotated in the withdrawal direction to unlatch the tool from the object.

A tool for threading a threaded object into a workpiece comprising:

• a nose section having a first set of threads at the forward end thereof which mate with the threads of the threaded object such that the nose section may be threaded onto the object,
• said nose section having a second set of threads at the rear end;
• a shaft configured at the rear end thereof to be rotationally driven and having threads intermediate the length thereof so that said shaft and said nose section may be threaded together,
• said shaft being configured at the forward end thereof to abut the end of the threaded object such that when (a) said shaft and said nose section are threaded together and (b) when said nose section has been threaded onto the object, abutment of said shaft with the end of the object limits the distance said nose section can be threaded onto the object, thus enabling the tool to be latched to the object when the shaft is rotated in an insertion direction and unlatched from the object when the shaft is rotated in a reverse direction;
• and
• means operatively connected to the nose section and shaft for rotationally biasing said nose section relative to said shaft so that the nose section tends to remain motionless when the shaft is rotated in the reverse direction to unlatch the tool from the object.

A tool for threading an object into a workpiece comprising:

• a forward section adapted at the forward end thereof to engage a first portion of the object to be threaded into the workpiece;
• a rear section adapted at the rear end thereof to be rotationally driven and adapted at the forward end thereof to engage a second portion of the object to be threaded into the workpiece, the engagement of the object by both sections providing a rotational latch between the tool and the object;
• and
• means responsive to the rotation of said rear section for selectively varying the relative axial position of said forward and rear sections between (a) a first axial position at which said rear section is abutting the object such that the tool is latched to the object and rotation of said rear section in the insertion direction will effect the driving of said forward section and the object, and (b) a second axial position at which said forward and rear sections are latched together so that rotation of said rear section in the withdrawal direction will unlatch said forward section and thus the tool from the threaded object, and
• means operatively connected to said forward section and rear section for rotationally biasing the forward section relative to the rear section so that the forward section tends to remain motionless when the rear section is rotated in the withdrawal direction to unlatch the tool from the object.

A tool for threading an object into a workpiece comprising:

• a forward section adapted at the forward end thereof to engage a first portion of the object to be threaded into the workpiece;
• a rear section adapted at the rear end thereof to be rotationally driven and adapted at the forward end thereof to engage a second portion of the object to be threaded into the workpiece, the engagement of the object by both sections providing a rotational latch between the tool and the object;
• means responsive to the rotation of said rear section for selectively coupling said forward and rear sections together in a way which prevents axial movement therebetween and effects rotational movement to said forward section;
• and
• means operatively connected to said forward section and rear section for rotationally biasing the forward section relative to the rear section so that the forward section tends to remain motionless when the rear section is rotated in a withdrawal direction to unlatch the tool from the object.