Power tool to tool bit extension adapter
AssigneeMilwaukee Electric Tool Corporation
InventorMax R. Sawa
Life of this patent
Estimating the term…
Abstract
An extension adapter includes a body, a collar, and a gasket. The body includes a front portion, a rear portion, and a flange separating the front portion from the rear portion. The front portion has a larger diameter than the rear portion. The body also includes an inner surface that defines a bore configured to receive a tool bit. The collar is moveable along the rear portion of the body between an unlocked position in which the tool bit is removable from the bore and a locked position in which the tool bit is secured to the body. The gasket is coupled to the rear portion of the body and abutting the flange. The gasket is compressed between the flange and the collar when the collar is in the locked position to block dust and debris from entering the bore.
Claims17
An extension adapter configured to couple a tool bit to a power tool, the power tool configured to drive the extension adapter and the tool bit about a rotational axis, the extension adapter comprising:
- a body including a front portion, a rear portion, and a flange separating the front portion from the rear portion, the front portion having a larger diameter than the rear portion, the body also including an inner surface defining a bore configured to receive the tool bit;
- and
- a collar moveable along the rear portion of the body between an unlocked position in which the tool bit is removable from the bore and a locked position in which the tool bit is secured to the body, the collar having a diameter that is substantially the same as the larger diameter of the front portion;
- and
- a gasket coupled to the rear portion of the body and abutting the flange;
- wherein the gasket is compressed between the flange and the collar when the collar is in the locked position to block dust and debris from entering the bore.
An extension adapter configured to couple a tool bit to a power tool, the power tool configured to drive the extension adapter and the tool bit about a rotational axis, the extension adapter comprising:
- a body including a front portion, a rear portion, and a flange separating the front portion from the rear portion, the body also including an inner surface defining a bore configured to receive the tool bit;
- an extension shaft configured to be secured to the body at an end of the body opposite from the tool bit;
- a rear end cover coupled to the rear portion of the body;
- a collar moveable along the body between an unlocked position, in which the tool bit is removable from the bore, and a locked position, in which the tool bit is secured to the body;
- a biasing member positioned between the rear end cover and the collar, the biasing member configured to bias the collar toward the locked position;
- and
- a gasket captured between the rear portion of the body and the rear end cover, the gasket configured to contact the extension shaft to block debris from entering the body.
An extension adapter configured to couple a tool bit to a power tool, the power tool configured to drive the extension adapter and the tool bit about a rotational axis, the extension adapter comprising:
- a body including a front portion, a rear portion, and a flange separating the front portion from the rear portion, the body also including an inner surface defining a bore configured to receive the tool bit through an opening in the front portion;
- an extension shaft configured to be secured to the body at an end of the body opposite from the tool bit;
- a gasket is captured between the rear portion of the body and the rear end cover, the gasket configured to contact the extension shaft to block debris from entering the body;
- a rear end cover coupled to the rear portion of the body;
- a collar moveable along the body and over a portion of the rear end cover between an unlocked position, in which the tool bit is removable from the bore, and a locked position, in which the tool bit is secured to the body;
- a first retaining member received in a first aperture defined in the body, the first retaining member movable within the first aperture into and out of a groove of the tool bit to selectively secure the tool bit to the body;
- and
- a second retaining member received in a second aperture defined in the body, the second retaining member extending partially into a groove of the extension shaft to secure the extension shaft to the body,
- wherein the rear end cover inhibits the second retaining member from moving out of the groove of the extension shaft.
Dependencies are inferred from the claim text.