# US 2014/0154347 A1 · Hand-held three-dimensional drawing device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154347 A1 - Document ID: US20140154347A1 - Status: Published application - Kind: A1 - Application number: 13/831,050 - Filed: 2013-03-14 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Wobble Works LLC - Applicants: Wobble Works LLC - Inventors: Peter Dilworth; Maxwell Bogue - Web page: https://patentgrep.com/patent/US20140154347A1 ## CPC - B29C 48/02: Small extruding apparatus, e.g. handheld, toy or laboratory extruders - B29C 48/05: Filamentary, e.g. strands - B29C 48/2526: {Direct drives or gear boxes} - B29C 48/2528: {Drive or actuation means for non-plasticising purposes, e.g. dosing unit} - B29C 48/37: Gear pumps - B29C 48/87: Cooling - B29C 64/106: using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material - B29C 64/118: using filamentary material being melted, e.g. fused deposition modelling [FDM] - B29C 64/20: Apparatus for additive manufacturing; Details thereof or accessories therefor - B33Y 10/00: Processes of additive manufacturing - B33Y 30/00: Apparatus for additive manufacturing; Details thereof or accessories therefor - B05C 17/00: Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces ({casings or accessories for storing or handling solid or pasty toilet or cosmetic substances A45D40/00;} brushes A46B; {shoe polish applicators A47L23/05; surgical glue applicators A61B17/00491;} absorbent pads, e.g. swabs, for applying media to the human body A61F13/15; {hand-held applicators for applying or spreading media, e.g. remedies, on the human body A61M35/003; implements for writing or drawing B43K; hand-held desk devices for applying liquid, e.g. adhesive, by contact to surfaces B43M11/06;} implements or apparatus for removing dry paint from surfaces B44D3/16 {; container closures with pads or like contents-applying means B65D47/42}) - B05C 17/005: for discharging material {from a reservoir or container located in or on the hand tool} through an outlet orifice by pressure {without using surface contacting members like pads or brushes} - B05C 17/00523: {provided with means to heat the material} - B05C 17/00526: {the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application (B05C17/0054 takes precedence)} - B05C 17/0053: {the driving means for the material being manual, mechanical or electrical} - B29C 48/802: {Heating} - B29C 48/865: {Heating} - B29C 48/92: Measuring, controlling or regulating - B29C 64/00: Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - B29C 64/10: Processes of additive manufacturing - B29C 2948/9258: Velocity - B29C 2948/92704: Temperature - E04F 21/165: for finishing joints, e.g. implements for raking or filling joints, jointers (bricklayers' tools E04G21/16; repairing, e.g. filling cracks, E04G23/02 {; wallpaper scrapers or the like B44C7/02; implements for cleaning joints A47L13/10}) - E04G 21/16: Tools or apparatus (devices for erecting fences E04H17/26) - E04G 23/02: Repairing, e.g. filling cracks; Restoring; Altering; Enlarging {(compositions of filling material C04B; strengthening, widening, repairing of bridges E01D22/00; drying damp layers by temporary mechanical ventilation E04B1/7092)} - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08) - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) - E04G: SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS ## Abstract A three-dimensional (3D) drawing device having a housing configured for manipulation by a user's hand and to accept a feed stock that is, in certain embodiments, a strand of thermoplastic. The drawing device has a nozzle assembly with an exit nozzle and a motor connected to a gear train that engages the strand of thermoplastic feed stock such that rotation of the motor causes the feed stock to be extruded out of the exit nozzle to form a three-dimensional object. ## Claims ### Claim 1 A three-dimensional (3D) drawing device comprising: a housing configured to accept a feed stock; a nozzle assembly at least partially disposed within the housing and having an exit nozzle; a motor disposed within the housing; and a gear train disposed within the housing and coupled between the motor and the feed stock and configured such that rotation of the motor causes the feed stock to be extruded out of the exit nozzle to form a three-dimensional object. ### Claim 2 (depends on 1) The 3D drawing device of claim 1, further comprising a heating element positioned adjacent to the exit nozzle and configured to melt the feed stock prior to extrusion through the exit nozzle. ### Claim 3 (depends on 1) The 3D drawing device of claim 1, further comprising a fan configured to provide a flow cooling air at exit nozzle. ### Claim 4 (depends on 3) The 3D drawing device of claim 3, wherein: the housing comprises an internal volume and at least one cooling port proximate to the exit nozzle, the cooling port in fluid communication with the internal volume; and the fan is disposed within the housing and configured to draw air into the internal volume. ### Claim 5 (depends on 4) The 3D drawing device of claim 4, wherein the at least one cooling port is configured to direct a flow of cooling air from the internal volume onto the extruded feed stock at the exit nozzle. ### Claim 6 (depends on 1) The 3D drawing device of claim 1, further comprising an actuator configured to selectably cause the motor to rotate in at least a first direction that causes the feed stock to be extruded out of the exit nozzle. ### Claim 7 (depends on 6) The 3D drawing device of claim 6, wherein the actuator is configured to selectably cause the motor to rotate in a second direction that is opposite the first direction. ### Claim 8 (depends on 7) The 3D drawing device of claim 7, wherein the actuator comprises at least one button. ### Claim 9 (depends on 8) The 3D drawing device of claim 8, wherein the actuator comprises: a first button that causes the motor to rotate in the first direction at a first speed such that the feed stock is extruded out of the exit nozzle at a first rate; and a second button that that causes the motor to rotate in the first direction at a second speed such that the feed stock is extruded out of the exit nozzle at a second rate that is greater than the first rate, wherein simultaneous actuation of the first and second buttons causes the motor to rotate in the second direction. ### Claim 10 (depends on 1) The 3D drawing device of claim 1, wherein: the feed stock is provided in the in the form of a strand; and the gear train comprises a final gear having teeth that engage the strand of feed stock such that rotation of the final gear causes the strand of feed stock to linearly move. ### Claim 11 A three-dimensional (3D) drawing device comprising: a housing configured to accept a feed stock, the housing having an internal volume and at least one cooling port in fluid communication with the internal volume; a nozzle assembly at least partially disposed within the housing proximate to the at least one cooling port and having an exit nozzle; a fan disposed within the housing and configured to draw air into the internal volume and then force the air out of the at least one cooling port; a motor disposed within the housing; and an actuator coupled to the housing, wherein actuation of the actuator causes the feed stock to be extruded out of the exit nozzle to form a three-dimensional object. ### Claim 12 (depends on 11) The 3D drawing device of claim 11, further comprising a heating element positioned adjacent to the exit nozzle and configured to melt the feed stock prior to extrusion through the exit nozzle. ### Claim 13 (depends on 11) The 3D drawing device of claim 11, wherein the at least one cooling port is configured to direct a flow of cooling air from the internal volume onto the extruded feed stock at the exit nozzle. ### Claim 14 (depends on 11) The 3D drawing device of claim 11, further comprising: a motor disposed within the housing and coupled to the actuator such that actuation of the actuator causes the motor to rotate in at least a first direction; and a gear train disposed within the housing and coupled between the motor and the feed stock and configured such that rotation of the motor in the first direction causes the feed stock to be extruded out of the exit nozzle. ### Claim 15 (depends on 14) The 3D drawing device of claim 14, wherein the actuator is configured to selectably cause the motor to rotate in a second direction that is opposite the first direction. ### Claim 16 (depends on 15) The 3D drawing device of claim 15, wherein the actuator comprises at least one button. ### Claim 17 (depends on 16) The 3D drawing device of claim 16, wherein the actuator comprises: a first button that causes the motor to rotate in the first direction at a first speed such that the feed stock is extruded out of the exit nozzle at a first rate; and a second button that that causes the motor to rotate in the first direction at a second speed such that the feed stock is extruded out of the exit nozzle at a second rate that is greater than the first rate, wherein simultaneous actuation of the first and second buttons causes the motor to rotate in the second direction. ### Claim 18 (depends on 14) The 3D drawing device of claim 14, wherein: the feed stock is provided in the form of a strand; and the gear train comprises a final gear having teeth that engage the strand of feed stock such that rotation of the final gear causes the strand of feed stock to linearly move. ### Claim 19 (depends on 1) The 3D drawing device of claim 1, wherein the housing is configured to be held in a user's hand. ### Claim 20 (depends on 11) The 3D drawing device of claim 11, wherein the housing is configured to be held in a user's hand.