# US 12,005,559 B2 · Attachment and portable power tool having an attachment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,005,559 B2 - Document ID: US12005559B2 - Status: Granted - Kind: B2 - Application number: 17/610,017 - Filed: 2020-05-08 - Published: 2022-06-23 - Granted: 2024-06-11 - Earliest claimed: 2019-05-10 - Assignees: Festool GmbH - Applicants: Festool GbmH - Inventors: Alexander Lautenschläger; Peter Seiler; Benno Gmünder; Stefan Ziegler - Web page: https://patentgrep.com/patent/US12005559B2 ## CPC - B25F 3/00: Associations of tools for different working operations with one portable power-drive means; Adapters therefor - B25B 21/007: {Attachments for drilling apparatus for screw or nut setting or loosening} - B25B 23/0028: {Angular adjustment means between tool head and handle} - B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)} - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING ## Abstract An attachment for a portable power tool, in particular a screwdriver machine or drilling machine, wherein the attachment has a drive part with a drive element and an output part with an output element for driving a work tool, wherein the drive element is able to be coupled to a machine output element of the portable power tool in order to drive the attachment and is connected or coupled to the output element via a transmission for driving the output element, and wherein the drive part has, on a drive side, a fastening device for releasably fastening the attachment to the portable power tool for conjoint rotation with respect to an angle positioning axis. Provision is made for the output part to be rotatable about the angle positioning axis relative to the drive part into at least two mutually different angle positions. ## Claims ### Claim 1 An attachment for a portable power tool, wherein the attachment has a drive part with a drive element and an output part with an output element for driving a work tool, wherein the drive element can be coupled to a machine output element of the portable power tool to drive the attachment and is connected or coupled to the output element via a transmission for driving the output element, and wherein the drive part has, on a drive side, a fastening device for releasably fastening the attachment for conjoint rotation with respect to an angle positioning axis on the portable power tool, and wherein the output part is rotatable about the angle positioning axis relative to the drive part into at least two mutually different angle positions and each angle position is fixable by way of an angle fixing device that has a drive angle fixing body and an output angle fixing body, wherein at least one of the angle fixing bodies is adjustable along an adjustment path relative to the other angle fixing body by an actuating element of an actuating device of the attachment between an angle fixing position, in which the angle fixing bodies fix the output part with respect to the drive part for conjoint rotation, and an angle adjustment position, in which the angle fixing bodies release the output part for rotation about the angle positioning axis with respect to the drive part. ### Claim 2 (depends on 1) The attachment as claimed in claim 1, wherein the angle fixing bodies are in formfitting engagement with one another in the angle fixing position and/or the angle fixing bodies are disengaged in the angle adjustment position. ### Claim 3 (depends on 1) The attachment as claimed in claim 1, wherein the drive angle fixing body is arranged for conjoint rotation with respect to the angle positioning axis on the drive part and/or is associated with the drive part and/or wherein the output angle fixing body is arranged for conjoint rotation with respect to the angle positioning axis on the output part and/or is associated with the output part. ### Claim 4 (depends on 1) The attachment as claimed in claim 1, wherein the adjustment path runs transversely to the angle positioning axis and/or radially with respect to the angle positioning axis and/or in an arched shape about the angle positioning axis. ### Claim 5 (depends on 1) The attachment as claimed in claim 1, wherein the fastening device and/or the angle fixing device has, on the drive side for rotation-locked holding of the attachment with respect to the angle positioning axis, rotation lock contours arranged on the portable power tool, to engage in counter rotation lock contours of the portable power tool or the drive part of the attachment. ### Claim 6 (depends on 5) The attachment as claimed in claim 5, wherein the rotation lock contours can be engaged with the counter rotation lock contours by a plugging movement in a plug direction along a plug axis, which is parallel to the angle positioning axis or has a directional component parallel to the angle positioning axis. ### Claim 7 (depends on 1) The attachment as claimed in claim 1, wherein the fastening device has a support surface for support on the portable power tool in a plug direction along a plug axis and a latch body, which is adjustable at least between a fixing position and a release position, having at least one locking contour for a tension-resistant holding of the attachment on the portable power tool against the plug direction, which latch body is engaged in the fixing position with a counter locking contour of the portable power tool and in the release position is disengaged from the counter locking contour to remove the attachment from the portable power tool. ### Claim 8 (depends on 7) The attachment as claimed in claim 7, wherein the latch body is a ring body rotatably mounted about the plug axis or angle positioning axis and/or the locking contour is a bayonet contour and/or the latch body is rotatably mounted about an axis of rotation, along which the plug direction runs. ### Claim 9 (depends on 5) The attachment as claimed in claim 5, wherein the drive angle fixing body and the rotation lock body are connected fixedly and/or for conjoint rotation and/or displacement-fixed or are integral and/or the drive angle fixing body forms the rotation lock body and/or the rotation lock contours are on the drive angle fixing body. ### Claim 10 (depends on 5) The attachment as claimed in claim 5, wherein the rotation lock body and/or the drive angle fixing body is mounted on the attachment movably with respect to the angle positioning axis between a rotation lock position and a rotational release position, wherein the rotation lock contours are adjusted in the rotation lock position toward the counter rotation lock contours and are adjusted in the rotational release position away from the counter rotation lock contours, and/or the rotation lock contours protrude further from the drive side to engage in the counter rotation lock contours of the portable power tool in the rotation lock position than in the rotational release position. ### Claim 11 (depends on 5) The attachment as claimed in claim 5, wherein the output angle fixing bodies, in the angle fixing position of the angle fixing device, fix the rotation lock body in place in the rotation lock position and/or, in the angle adjustment position release the rotation lock body for a movement into the rotational release position. ### Claim 12 (depends on 5) The attachment as claimed in claim 5, wherein the actuating element is movement coupled to the rotation lock body to carry it along into the rotational release position, and/or wherein a release transmission, is arranged between the actuating element and the rotation lock body to adjust the rotation lock body from the rotation lock position into the rotational release position. ### Claim 13 (depends on 5) The attachment as claimed in claim 5, wherein a clearance is provided between the actuating element and the at least one adjustable rotation lock body, which clearance enables an adjustment of the at least one angle fixing body adjustable along the adjustment path from the angle fixing position into the angle adjustment position before an adjustment of the rotation lock body from the rotation lock position into the rotational release position. ### Claim 14 (depends on 5) The attachment as claimed in claim 5, wherein the rotation lock body is spring-loaded by a spring assembly in the rotation lock position. ### Claim 15 (depends on 1) The attachment as claimed in claim 1, further comprising a spring assembly for actuating the angle fixing device in the angle fixing position. ### Claim 16 (depends on 15) The attachment as claimed in claim 15, wherein the spring assembly acts on the actuating element of the actuating device in terms of an adjustment of the angle fixing device into the angle fixing position, and/or the spring assembly comprises a coiled spring or torsion spring penetrated by the angle positioning axis. ### Claim 17 (depends on 1) The attachment as claimed in claim 1, wherein the actuating device, is manually actuatable and/or extends in a ring shape or partial ring shape about the angle positioning axis and/or comprises an actuating ring. ### Claim 18 (depends on 1) The attachment as claimed in claim 1, wherein a transfer transmission is arranged between the actuating element and the angle fixing body to be actuated by the actuating element for force redirection of a movement of the actuating element in a first movement direction and into a movement of the angle fixing body to be actuated in a second movement direction. ### Claim 19 (depends on 1) The attachment as claimed in claim 1, wherein the actuating element is movably mounted on the attachment transversely, to the angle fixing body to be actuated and/or linearly and/or in parallel to the angle positioning axis and/or rotatably about the angle positioning axis. ### Claim 20 (depends on 1) The attachment as claimed in claim 1, wherein the actuating element is rotatably mounted about the angle positioning axis and has at least one positive rotation contour for positive rotation of the output part about the angle positioning axis. ### Claim 21 (depends on 20) The attachment as claimed in claim 20, wherein the actuating element has a rotational clearance for a rotational movement about the angle positioning axis with respect to the output part in such a way that the actuating element is rotatable out of a rotational position associated with the angle fixing position into a rotational position associated with the angle adjustment position, before the at least one positive rotation contour enters into rotational engagement with the output part. ### Claim 22 (depends on 1) The attachment as claimed in claim 1, wherein the actuating element is fixedly connected or integral with at least one angle fixing body. ### Claim 23 (depends on 1) The attachment as claimed in claim 1, wherein one angle fixing body is arranged radially outward with respect to the other angle fixing body. ### Claim 24 (depends on 1) The attachment as claimed in claim 1, wherein at least one of the angle fixing bodies, is designed as a sleeve body or is formed by a sleeve body and/or is penetrated by a drive element of the attachment. ### Claim 25 (depends on 1) The attachment as claimed in claim 1, wherein at least one of the angle fixing bodies, is or comprises a locking cone and/or at least one of the angle fixing bodies, has a spherical cap for accommodating the radially movable angle fixing body. ### Claim 26 (depends on 1) The attachment as claimed in claim 1, wherein the at least one angle fixing body adjustable along the adjustment path and movable radially to the angle positioning axis forms a component of an assembly of at least two, angle fixing bodies actuatable by the actuating device and arranged in a ring shape about the angle positioning axis, which have angular intervals in relation to one another with respect to the angle positioning axis and are movably mounted along the adjustment path. ### Claim 27 (depends on 1) The attachment as claimed in claim 1, wherein the output angle fixing body is fixed in place radially with respect to the angle positioning axis and/or is displaceably mounted in parallel to the angle positioning axis with respect to the drive part, and the drive angle fixing body comprises the at least one angle fixing body movably mounted along the adjustment path or is formed thereby. ### Claim 28 (depends on 1) A portable power tool having an attachment as claimed in claim 1.