Percussion tool
AssigneeMilwaukee Electric Tool Corporation
InventorsAlexander Krug, Zbyn{hacek over (e)}k Kadlec, Günter Karg, Andrew Delmar Van Hoorn, Kevin Gee
Life of this patent
Estimating the term…
Abstract
A percussion tool is used for performing a chiseling operation on a workpiece with a chisel. The percussion tool comprises a housing including a cylinder portion, a tool holder coupled to the cylinder portion for holding the chisel, and a percussion mechanism including a striker supported for reciprocation in the cylinder portion. The percussion mechanism is configured to impart repeated axial impacts to the chisel with the striker. The percussion tool further comprises a flange between the cylinder portion and the tool holder. Movement of the chisel within the tool holder toward the percussion mechanism is stopped by the flange.
Claims18
A percussion tool for performing a chiseling operation on a workpiece with a chisel, the percussion tool comprising:
- a housing;
- an electric motor positioned within the housing;
- a percussion mechanism driven by the motor and including a striker supported for reciprocation relative to the housing along a longitudinal axis;
- and
- a tool holder coupled to the housing and including a rotatable handle having a rod that rotates with the handle within the tool holder, the chisel being securable in and removable from the tool holder, the chisel having a longitudinal groove that is substantially parallel with the longitudinal axis,
- wherein when the chisel is secured in the tool holder, the chisel is permitted to axially reciprocate within the tool holder in response to receiving repeated axial impacts from the striker,
- wherein the handle is moveable between a first position, in which the rod is received in the groove and the chisel is secured in the tool holder, and a second position, in which the rod is removed from the groove and the chisel is removable from the tool holder, and
- wherein when the handle is in the second position, an acute angle is defined between a first reference plane defined by the handle and a second reference plane that is perpendicular to the longitudinal axis, and wherein the acute angle is 10 degrees or less.
A percussion tool for performing a chiseling operation on a workpiece with a chisel, the percussion tool comprising:
- a housing;
- an electric motor positioned within the housing;
- a percussion mechanism driven by the motor and including a striker supported for reciprocation relative to the housing along a longitudinal axis;
- and
- a tool holder coupled to the housing and including a rotatable handle having a cylindrical rod defining an axis of rotation of the handle, the rod having a recessed portion and an opposite arcuate portion defined by a circumference of the rod,
- wherein the chisel is securable in and removable from the tool holder, the chisel having a longitudinal groove that is substantially parallel with the longitudinal axis,
- wherein when the chisel is secured in the tool holder, the chisel is permitted to axially reciprocate within the tool holder in response to receiving repeated axial impacts from the striker,
- wherein the handle is moveable between a first position, in which the arcuate portion is received in the groove and the chisel is secured in the tool holder, and a second position, in which the arcuate portion is removed from the groove, the recessed portion is in facing relationship with the groove, and the chisel is removable from the tool holder, and
- wherein the arcuate portion defines an angle of 110 degrees or less along the circumference of the rod with respect to the axis of rotation of the handle.
A percussion tool for performing a chiseling operation on a workpiece with a chisel, the percussion tool comprising:
- a housing including a cylinder portion;
- a tool holder coupled to the cylinder portion for holding the chisel, the tool holder including a rotatable handle having a rod that rotates with the handle within the tool holder, the chisel being securable in and removable from the tool holder;
- a percussion mechanism including a striker supported for reciprocation in the cylinder portion along a longitudinal axis, the percussion mechanism configured to impart repeated axial impacts to the chisel with the striker;
- and
- a flange between the cylinder portion and the tool holder, wherein movement of the chisel within the tool holder toward the percussion mechanism is stopped by the flange,
- wherein the chisel has a longitudinal groove that is substantially parallel with the longitudinal axis,
- wherein when the chisel is secured in the tool holder, the chisel is permitted to axially reciprocate within the tool holder in response to receiving repeated axial impacts from the striker,
- wherein the handle is moveable between a first position, in which the rod is received in the groove and the chisel is secured in the tool holder, and a second position, in which the rod is moved out of the groove and the chisel is removable from the tool holder,
- wherein when the handle is in the second position, an acute angle is defined between a first reference plane defined by the handle and a second reference plane that is perpendicular to the longitudinal axis, and
- wherein the acute angle is 10 degrees or less.
Dependencies are inferred from the claim text.