# US 5,347,765 A · Device and method for multiple uses of a portable grinder > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,347,765 A - Document ID: US5347765A - Status: Granted - Kind: A - Application number: 08/017,001 - Filed: 1993-02-12 - Granted: 1994-09-20 - Earliest claimed: 1993-02-12 - Inventors: Harold W. Mixon, Jr. - Web page: https://patentgrep.com/patent/US5347765A ## CPC - B23Q 3/12: for securing to a spindle in general (B23Q3/152 takes precedence; chucks B23B31/02) - B24B 23/028: {Angle tools} - B25F 3/00: Associations of tools for different working operations with one portable power-drive means; Adapters therefor - Y10T 279/3418: for particular tool or workpiece - 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 - 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 - 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)} - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A device is used to adapt a portable angle grinder for use with a drill chuck and associated drill chuck accessories. The device engages the spindle of the grinder to the drill chuck and provides the interface necessary to permit the grinder to be compatible with the drill chuck. The device and method of using the device is described for a variety of trades and tasks associated with those trades. ## Claims ### Claim 1 A method for using a drill chuck with a grinder, the method comprising the steps of: providing a grinder having a spindle, the spindle having threads affixed thereto; removably affixing an adaptive member proximal end to the spindle, the proximal end having a thread for communicating with the spindle thread; and removably affixing a distal end of the member to a drill chuck the member distal end having threads communicating with drill chuck threads for affixing the drill chuck to the grinder. ### Claim 2 (depends on 1) The method as recited in claim 1 wherein the member comprises an elongated shaft. ### Claim 3 (depends on 1) The method as recited in claim 1 wherein the member further comprises a plurality of surfaces engageable by a wrench for affixing the member to the spindle and chuck. ### Claim 4 A method for adapting a drill chuck to a portable grinder, the method comprising the steps of: providing a member having a proximal end and a distal end, the distal end having a threaded shaft for engaging a drill chuck the proximal end having a bore adapted to receive a spindle of a portable angle grinder; and affixing a plurality of flat surfaces to the member for engaging a wrench. ### Claim 5 (depends on 4) A method as recited in claim 4 wherein the member is an elongated member. ### Claim 6 (depends on 4) A method as recited in claim 4 wherein the shaft distal end comprises a fine thread adapted to be received by a drill chuck head, and the proximal end bore comprises a coarse thread for receiving a spindle of a portable angle grinder. ### Claim 7 A method for affixing a drill chuck having a threaded end to a grinder spindle having a threaded end, the method comprising the steps of providing a shaft having a proximal end and a distal end, adapting the proximal end to receive the grinder spindle and adapting the distal end to receive the drill chuck head. ### Claim 8 (depends on 7) The method as recited in claim 7 wherein the shaft is an elongated shaft. ### Claim 9 (depends on 7) The method as recited in claim 7 wherein the device comprises a plurality of flat surfaces for engaging a wrench. ### Claim 10 A method for engaging a grinder with a drill chuck for using drill chuck accessories with the grinder, the method comprising the steps of: providing a grinder having a spindle; providing a member having a proximal end and a distal end; affixing the proximal end to the grinder spindle; affixing a drill chuck to the distal end of the member; and affixing drill chuck accessories to the drill chuck. ### Claim 11 (depends on 10) A method as recited in claim 10 wherein providing the grinder comprises the step of providing a portable angle grinder. ### Claim 12 (depends on 10) A method as recited in claim 10 wherein affixing the member further comprises affixing an elongated member having a distal end and a proximal end. ### Claim 13 (depends on 12) A method as recited in claim 12 wherein affixing an elongated member further comprises: engaging the proximal end of the member to the distal end of the elongated member; affixing a drill chuck to the distal end of the member; and affixing the proximal end of the elongated member to the grinder spindle. ### Claim 14 (depends on 10) A method as recited in claim 10 further comprising the step of controlling speed of rotation of the spindle.