Mortiser tool
OwnerStuart Buckmaninventor
Life of this patent
Estimating the term…
Abstract
A mortiser tool comprises a drill bit, a cutting element mounted around the drill bit and a motor means. In use a motor rotates the drill bit independently of the cutting element, and in use a motor moves the drill bit in a first reciprocating action, in which the cutting element is axially movable in relation to the drill bit. The drill bit is provided with a transmission adapted to axially move the cutting element in a second reciprocating action in use, which second reciprocating action is axially non-synchronous with the first reciprocating action.
Claims16
A mortiser tool comprising a reciprocating drill bit, a cutting element mounted around the drill bit and motor means, wherein the motor means rotates the drill bit independently of the cutting element, and simultaneously moves the drill bit in a first reciprocating action, in which the cutting element is axially movable in relation to the drill bit, in which the drill bit is provided with transmission means adapted to axially move the cutting element in a second reciprocating action in use, which the second reciprocating action is non-synchronous with the first reciprocating action.
A mortiser fitting for a motorized drill, comprising a drill bit, a cutting element mounted around the drill bit and attachment means adapted to attach the mortiser fitting to a motorized drill, wherein the motorized drill rotates the drill bit independently from the cutting element, and the motorized drill simultaneously moves the drill bit in a first reciprocating action, in which the cutting element is axially movable in relation to the drill bit, in which the drill bit is provided with transmission means adapted to axially move the cutting element in a second reciprocating action in use, which the second reciprocating action is axially non-synchronous with the first reciprocating action.
A mortiser tool comprising:
- a rotary drill having a first end for boring a hole in a workpiece and a second end axially spaced from said first end;
- an actuator having a clamping part for receiving the second end of said drill, said actuator simultaneously rotating said drill about an axis and moving said drill axially back and forth in both directions with respect to said axis, said drill having a first bearing surface adjacent the first drill end and a second bearing surface adjacent the second end of said drill;
- and
- a chisel surrounding said drill having at least two spaced parallel cutting surfaces extending parallel to said axis, said chisel rotationally fixed and axially moveable with respect to said drill, said chisel having first and second bearing surfaces for respectively engaging the first and second bearing surfaces of said drill, said first and second drill bearing surfaces spaced along said axis a distance greater than said chisel first and second bearing surfaces;
- such that said chisel moves with respect to said axis in a non-synchronous axial movement with said drill for at least part of said back and forth movement of said drill along said axis.
Dependencies are inferred from the claim text.