# US 10,478,930 B2 · Tool attachment and tool system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,478,930 B2 - Document ID: US10478930B2 - Status: Granted - Kind: B2 - Application number: 14/704,008 - Filed: 2015-05-05 - Published: 2015-11-12 - Granted: 2019-11-19 - Earliest claimed: 2014-05-07 - Assignees: Robert Bosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Dietmar Saur; Marco Braun; Andreas Necker - Web page: https://patentgrep.com/patent/US10478930B2 ## CPC - B23Q 5/045: {Angle drives} - B25B 21/00: Portable power-driven screw or nut setting or loosening tools; (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; {for mounting or dismounting wheels B60B29/006}); Attachments for drilling apparatus serving the same purpose (machines B23P19/06) - B25F 3/00: Associations of tools for different working operations with one portable power-drive means; Adapters therefor - B25F 5/00: Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING - 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)} ## Abstract A tool attachment includes: an attachment housing; a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and, (ii) in the unlocked state, enables removal of the tool attachment from the handheld power tool; and a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, the first angle position setting unit being operable in the locked state and in the unlocked state of the locking unit to enable a change of the predefined angle position. ## Claims ### Claim 1 A tool attachment, comprising: an attachment housing; a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and (ii) in an unlocked state, enables a removal of the tool attachment from the handheld power tool; and a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, wherein the first angle position setting unit is configured to be operable in the locked state and in the unlocked state of the locking unit to enable a change of the predefined angle position, wherein the first angle position setting unit is operated by a combined and simultaneous longitudinal and rotational movement of the attachment housing in relation to the fastening interface to change the predefined angle position. ### Claim 2 (depends on 1) The tool attachment as recited in claim 1, wherein the first angle position setting unit is configured to enable a setting of the predefined angle position with the fastening interface fastened on the handheld power tool. ### Claim 3 (depends on 1) The tool attachment as recited in claim 1, wherein the fastening interface has a second angle position setting unit configured to enable a setting of the predefined angle position during the fastening of the fastening interface on the handheld power tool. ### Claim 4 (depends on 3) The tool attachment as recited in claim 3, wherein the first angle position setting unit is configured to enable a change of the predefined angle position, which is set using the second angle position setting unit during the fastening of the fastening interface on the handheld power tool, in the locked state of the locking unit. ### Claim 5 (depends on 3) The tool attachment as recited in claim 3, wherein the second angle position setting unit has an angle setting unit, which is associated with the fastening interface and is rigidly connected to the attachment housing. ### Claim 6 (depends on 3) The tool attachment as recited in claim 3, wherein the second angle position setting unit has an angle setting element, which is associated with the fastening interface and has an angle setting toothing. ### Claim 7 (depends on 3) The tool attachment as recited in claim 3, wherein the second angle position setting unit has a centering aid for the axial centering of the fastening interface on the handheld power tool. ### Claim 8 (depends on 7) The tool attachment as recited in claim 7, wherein the centering aid is conical in at least in one section. ### Claim 9 (depends on 1) The tool attachment as recited in claim 1, wherein the first angle position setting unit has a tubular centering sleeve, which is at least sectionally coaxially enclosed by an angle setting element associated with the fastening interface to provide a centering area, a force-loaded form fit being implemented between the centering sleeve and the angle setting element in every settable angle position. ### Claim 10 (depends on 9) The tool attachment as recited in claim 9, wherein the form fit is implemented by an engagement of a first angle setting toothing which is associated with the centering sleeve, with a second angle setting toothing which is associated with the angle setting element. ### Claim 11 (depends on 10) The tool attachment as recited in claim 10, wherein the second angle setting toothing is implemented on a circumferential shoulder, which is oriented radially inward, of the angle setting element and faces away from the fastening interface. ### Claim 12 (depends on 9) The tool attachment as recited in claim 9, wherein the angle setting element is connected with the aid of a sleeve-type connecting element to the attachment housing. ### Claim 13 (depends on 12) The tool attachment as recited in claim 12, wherein a compression spring is situated between a flange, which is oriented radially inward, of the connecting element and a locking ring situated on the angle setting element. ### Claim 14 (depends on 1) The tool attachment as recited in claim 1, wherein the first angle position setting unit includes a first angle setting toothing and a second angle setting toothing, a force-loaded form fit being implemented between the first angle setting toothing and the second angle setting toothing in every settable angle position. ### Claim 15 (depends on 14) The tool attachment as recited in claim 14, wherein the first angle setting toothing is implemented on a centering sleeve associated with the drive unit. ### Claim 16 (depends on 15) The tool attachment as recited in claim 15, wherein the second angle setting toothing is situated on a main body of the tool attachment. ### Claim 17 (depends on 16) The tool attachment as recited in claim 16, wherein the angle setting toothing of the second angle position setting unit is situated on the main body. ### Claim 18 (depends on 1) The tool attachment as recited in claim 1, wherein the locking unit has an at least sectionally tubular locking body and an actuating ring situated on the locking body, and wherein the actuating ring is operable to lock the locking body on the handheld power tool. ### Claim 19 (depends on 18) The tool attachment as recited in claim 18, wherein the locking body has at least two locking elements which are implemented in the manner of bayonets to form a bayonet joint. ### Claim 20 (depends on 1) The tool attachment as recited in claim 1, wherein the first angle position setting unit includes a first angle setting element and a second angle setting element, a force-loaded form fit being implemented between the first angle setting element and the second angle setting element in every settable angle position. ### Claim 21 A tool attachment, comprising: an attachment housing; a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and (ii) in an unlocked state, enables a removal of the tool attachment from the handheld power tool; a drive unit situated in the attachment housing for driving a tool receptacle of the tool attachment; and a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, wherein the first angle position setting unit is configured to be operable to enable a change of the predefined angle position of the drive unit in relation to the fastening interface, wherein the first angle position setting unit is operated by a combined and simultaneous longitudinal and rotational movement of the attachment housing in relation to the fastening interface to change the predefined angle position. ### Claim 22 A tool system, comprising: a handheld power tool; and a tool attachment including: an attachment housing; a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and (ii) in an unlocked state, enables a removal of the tool attachment from the handheld power tool; and a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, wherein the first angle position setting unit is configured to be operable in the locked state and in the unlocked state of the locking unit to enable a change of the predefined angle position, wherein the first angle position setting unit is operated by a combined and simultaneous longitudinal and rotational movement of the attachment housing in relation to the fastening interface to change the predefined angle position. ### Claim 23 A tool attachment, comprising: an attachment housing; a fastening interface situated on the attachment housing for detachable fastening on a handheld power tool, the fastening interface having a locking unit which, (i) in a locked state, locks the tool attachment for operation on the handheld power tool, and (ii) in an unlocked state, enables a removal of the tool attachment from the handheld power tool; and a first angle position setting unit for setting a predefined angle position of the tool attachment on the handheld power tool, wherein the first angle position setting unit is configured to be operable in the locked state and in the unlocked state of the locking unit to enable a change of the predefined angle position, wherein the fastening interface has a second angle position setting unit configured to enable a setting of the predefined angle position during the fastening of the fastening interface on the handheld power tool.