# US 10,870,155 B2 · Oscillating tool accessory holder mechanism > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,870,155 B2 - Document ID: US10870155B2 - Status: Granted - Kind: B2 - Application number: 15/893,610 - Filed: 2018-02-10 - Published: 2019-08-15 - Granted: 2020-12-22 - Earliest claimed: 2018-02-10 - Assignees: Robert Bosch Tool Corporation; Robert Bosch GmbH - Applicants: Robert Bosch Tool Corporation; Robert Bosch GmbH - Inventors: Said S. Castro Pena - Web page: https://patentgrep.com/patent/US10870155B2 ## CPC - B23B 31/19: moving parallel to the axis of the chuck {(B23B31/185 takes precedence)} - B23B 31/4073: {Gripping the work or tool between planes almost perpendicular to the axis} - B27B 5/32: Devices for securing circular saw blades to the saw spindle - B27B 19/006: {with oscillating saw blades; Hand saws with oscillating saw blades} - B24B 23/04: with oscillating grinding tools; Accessories therefor - Y10T 279/33: Member applies axial force component - B23B: TURNING; BORING (arrangements for copying or controlling B23Q) - B27B: SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching A01G3/08; sawing apparatus specially adapted for felling trees A01G23/091; features not restricted to a particular type of wood saw B23D, e.g. attaching saw blades B23D51/00; machine tool frames, beds, pillars or like members, in general B23Q1/01) - B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An oscillating power tool system in one embodiment includes a motor, an output power shaft extending along an axis and operably connected to the motor, the output power shaft driven in an oscillatory manner by the motor about the axis, a flange supported by the output power shaft and fixedly positioned with respect to the output power shaft so as to oscillate with the output power shaft when driven by the motor, the flange including a lower surface defining a first plane, and a plurality of mounting pins extending from the flange to a location beneath the first plane, the plurality of mounting pins configured such that when an accessory is mounted to the flange, a mounting force is applied directly to the plurality of mounting pins from the accessory. ## Claims ### Claim 1 An oscillating power tool system, comprising: a motor; an output power shaft extending along an axis and operably connected to the motor, the output power shaft driven in an oscillatory manner by the motor about the axis; a flange supported by the output power shaft and fixedly positioned with respect to the output power shaft so as to oscillate with the output power shaft when driven by the motor, the flange including a lower surface defining a first plane; a plurality of mounting pins extending from the flange to a location beneath the first plane, the plurality of mounting pins configured such that when an accessory is mounted to the flange, a mounting force is applied directly to the plurality of mounting pins from the accessory at a plurality of locations spaced apart from the first plane; and a clamping mechanism including a spindle axially slideably positioned within a central bore of the output power shaft and rotationally fixed with the output power shaft; a foot portion extending orthogonally to the axis and configured to clamp the accessory against the plurality of mounting pins when the accessory is mounted to the flange; and a spring operably connected to the spindle, wherein the spring is configured to selectively force the foot portion against the accessory when the accessory is mounted to the flange. ### Claim 2 (depends on 1) The oscillating power tool system of claim 1, wherein: the plurality of mounting pins comprise a first mounting pin; the first mounting pin includes at least one mounting wall portion extending between an upper transition portion and a lower transition portion; at least a portion of the first mounting pin extends within a receptacle of the accessory when the accessory is mounted to the flange; and the first mounting pin is configured such that the at least one mounting wall portion contacts a wall of the receptacle of the accessory when the accessory is mounted to the flange. ### Claim 3 (depends on 2) The oscillating power tool system of claim 2, wherein: the at least one mounting wall portion comprises a first mounting wall portion on a first side of the first mounting pin; the at least one mounting wall portion comprises a second mounting wall portion on a second side of the first mounting pin; the first side is directly opposite the second side; the first side contacts a first portion of the wall of the receptacle of the accessory when the accessory is mounted to the flange; and the second side contacts a second portion of the wall of the receptacle of the accessory when the accessory is mounted to the flange. ### Claim 4 (depends on 3) The oscillating power tool system of claim 3, wherein the oscillating power system further comprises: the accessory. ### Claim 5 (depends on 1) The oscillating power tool system of claim 1, wherein: the spindle includes an externally threaded extension extending upwardly and outwardly from the central bore; and the clamping mechanism includes an internally threaded portion threadedly engaged with the externally threaded extension, the clamping mechanism configured to apply an upward force on the spindle along the axis so as to force the foot against the accessory when the accessory is mounted to the flange. ### Claim 6 (depends on 5) The oscillating power tool system of claim 5, wherein: the internally threaded portion is a portion of a knob; the knob is movable between a first position with respect to the spindle and a second position with respect to the spindle; the knob is spaced apart from the foot by a first distance when the knob is in the first position; the knob is spaced apart from the foot by a second distance when the knob is in the second position; and the second distance is greater than the first distance. ### Claim 7 (depends on 6) The oscillating power system of claim 6, wherein: the spring is configured to bias the knob in a direction away from the foot. ### Claim 8 (depends on 7) The oscillating power tool system of claim 7, wherein the power tool system is configured such that when the knob is in the second position, the knob can be forced downwardly along the axis while in the second position, thereby moving the foot away from the flange. ### Claim 9 (depends on 8) The oscillating power tool system of claim 8, wherein: the internally threaded portion is a metal insert; the metal insert contacts the output power shaft when the knob is in the first position; and the metal insert does not contact the output power shaft when the knob is in the second position and the knob is not being forced downwardly. ### Claim 10 (depends on 9) The oscillating power tool system of claim 9, wherein: the plurality of mounting pins comprise a first mounting pin; the first mounting pin includes at least one mounting wall portion extending between an upper transition portion and a lower transition portion; at least a portion of the first mounting pin extends within a receptacle of the accessory when the accessory is mounted to the flange; and the first mounting pin is configured such that the at least one mounting wall portion contacts a wall of the receptacle of the accessory when the accessory is mounted to the flange. ### Claim 11 (depends on 10) The oscillating power tool system of claim 10, wherein: the at least one mounting wall portion comprises a first mounting wall portion on a first side of the first mounting pin; the at least one mounting wall portion comprises a second mounting wall portion on a second side of the first mounting pin; the first side is directly opposite the second side; the first side contacts a first portion of the wall of the receptacle of the accessory when the accessory is mounted to the flange; and the second side contacts a second portion of the wall of the receptacle of the accessory when the accessory is mounted to the flange. ### Claim 12 (depends on 11) The oscillating power tool system of claim 11, wherein the oscillating power system further comprises: the accessory. ### Claim 13 (depends on 1) The oscillating power tool system of claim 1, wherein the plurality of mounting pins are configured such that when the accessory is mounted to the flange, a gap is formed between the lower surface and the plurality of locations spaced apart from the first plane when only the mounting force is applied directly to the plurality of mounting pins from the accessory. ### Claim 14 (depends on 1) The oscillating power tool system of claim 1, wherein: the axis is a vertical axis; the motor is above the flange; the plurality of mounting pins each include a respective upper transition portion; each of the respective upper transition portions is positioned directly above a planar portion of the accessory when the accessory is mounted to the flange.