US 6,048,260 A · Angle attachment for power tool

Abstract

An angle attachment for a hand-held power tool, such as a spiral cutting tool, includes an angle attachment housing having an open first end adapted to be attached to the motor housing of the power tool. An alignment bearing is mounted in the angle attachment housing and adapted to receive and support a first shaft having a first shaft gear mounted thereon. An attachment shaft is mounted in the angle attachment housing at an angle, e.g., a right angle, to the first shaft. The attachment shaft includes an attachment shaft gear mounted thereon which is engaged with the first shaft gear. One or more attachment shaft bearings are mounted in the angle attachment housing to support the attachment shaft for rotational movement thereof. The first shaft is coupled to a motor shaft of the power tool before the angle attachment housing is attached to the power tool motor housing. Rotation of the first shaft by the power tool motor causes rotation of attachments attached to the attachment shaft mounted at an angle to the first shaft by means of the gear mechanism formed by the engaged first shaft gear and attachment shaft gear.

Claims25

Dependent claims

A removable angle attachment for a power tool, comprising:

an angle attachment housing;
(b) an attachment shaft mounted in the angle attachment housing and having an attachment end extending therefrom;
(c) a first attachment shaft bearing mounted in the angle attachment housing and positioned therein to support the attachment shaft for rotational movement thereof;
(d) an attachment shaft gear attached to the attachment shaft;
and
(e) an alignment bearing mounted in the angle attachment housing and adapted to removably receive a distal end of a first shaft having a first shaft gear mounted thereon to support the first shaft for rotational movement thereof and positioned in the angle attachment housing such that when the first shaft is positioned in the alignment bearing the attachment shaft is at an angle to the first shaft and the attachment shaft gear is engaged with the first shaft gear.

3 more elements

An angle attachment for a power tool having a motor housing, a motor located within the motor housing, a motor shaft driven by the motor and having a motor shaft end ex tending from the motor housing, and a mechanical structure attached to the motor shaft end for securing attachments to the motor shaft, comprising:

(a) an angle attachment housing having an open first end thereof attached to the motor housing around a location where the motor shaft extends from the motor housing;
(b) an attachment shaft mounted in the angle attachment housing and having an attachment end extending from a second end thereof;
(c) a first attachment shaft bearing mounted in the angle attachment housing and positioned therein to support the attachment shaft for rotational movement thereof;
(d) an attachment shaft gear attached to the attachment shaft;
(e) an alignment bearing mounted in the angle attachment housing;
(f) a first shaft attached to the motor shaft via the mechanical structure and removably positioned in the alignment bearing at an angle to the attachment shaft to be supported by the alignment bearing for rotational movement thereof;
and
(g) a first shaft gear mounted on the first shaft and engaged with the attachment shaft gear.

5 more elements

Dependencies are inferred from the claim text.

Angle attachment for power tool

Life of this patent

Angle attachment for power tool

Life of this patent

Abstract

Claims25