# US 10,307,785 B2 · Heat pump dispenser > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,307,785 B2 - Document ID: US10307785B2 - Status: Granted - Kind: B2 - Application number: 15/596,087 - Filed: 2017-05-16 - Published: 2017-11-30 - Granted: 2019-06-04 - Earliest claimed: 2016-05-24 - Assignees: Rpm Wood Finishes Group, Inc. - Applicants: RPM Wood Finishes Group, Inc. - Inventors: Steve Cash; Colin Campbell; Marc Vitantonio; Robert Vystrcil; Trevor Jackson; Chris deHaas; Robert Soreo - Web page: https://patentgrep.com/patent/US10307785B2 ## CPC - B05C 17/0053: {the driving means for the material being manual, mechanical or electrical} - B05C 17/00533: {comprising a piston} - B05C 17/0126: {comprising an element, e.g. an arc compensating element, articulated at one end on the lever and at the other end on the piston rod driving means, e.g. a pawl} - B27G 11/005: {Glue guns, glue sprayers} - F16N 5/00: Apparatus with hand-positioned nozzle supplied with lubricant under pressure (F16N3/00 takes precedence) - 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) - B27G: ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS (tools for grinding B24D; sawing tools B27B33/00; tools for slotting or mortising machines B27F5/02; tools for the manufacture of wood shavings, chips, powder or the like B27L11/00); SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS - F16N: LUBRICATING ## Abstract A heat pump dispenser includes a housing having a handle portion and a barrel portion. A feeder section is coupled to the handle portion. The feeder section includes a feeder mechanism and a dispensing trigger assembly operably coupled to the feeder mechanism. The feeder mechanism includes a gear assembly having a drive gear operably engaged to a plunger housed in the barrel portion. The trigger assembly includes a trigger having a ratchet portion. The ratchet portion selectively engages and rotates the drive gear to move the plunger toward a dispensing opening provided in the barrel portion and into engagement with an adhesive/filler stick. The feeder mechanism is selectively actuated by the dispensing trigger assembly to advance the adhesive/filler stick into a heater section of the barrel portion. ## Claims ### Claim 1 A heat pump dispenser comprising: a housing having a handle portion and a barrel portion; a feeder section coupled to the handle portion, the feeder section includes a feeder mechanism and a dispensing trigger assembly operably coupled to the feeder mechanism, the feeder mechanism includes a gear assembly having a drive gear operably engaged to a plunger housed in the barrel portion, the trigger assembly includes a trigger having a ratchet portion, the ratchet portion selectively engages and rotates the drive gear to move the plunger toward a dispensing opening provided in the barrel portion and into engagement with an adhesive/filler stick, wherein the feeder mechanism is selectively actuated by the dispensing trigger assembly to advance the adhesive/filler stick into a heater section of the barrel portion, wherein the gear assembly further includes a rack drive gear and a linear gear provided as part of the plunger, the rack drive gear engaged to both the drive gear and the linear gear, and further including a biasing member that biases the drive gear towards the ratchet portion. ### Claim 2 (depends on 1) The heat pump dispenser of claim 1, wherein the drive gear is movably received on a stem of the rack drive gear, and the biasing member is mounted on the stem and interposed between the drive gear and the rack drive gear to bias the drive gear toward the ratchet portion. ### Claim 3 (depends on 2) The heat pump dispenser of claim 2, wherein the trigger assembly includes a locking pawl selectively engaging the drive gear to prevent counter-rotation of the drive gear. ### Claim 4 (depends on 3) The heat pump dispenser of claim 3, wherein the drive gear is adapted to move toward the rack drive gear to disengage the locking pawl from the drive gear. ### Claim 5 (depends on 3) The heat pump dispenser of claim 3, wherein at least one biasing member is mounted to the plunger and the housing to bias the plunger away from the dispensing opening. ### Claim 6 (depends on 1) The heat pump dispenser of claim 1, wherein an outer side of the drive gear includes at least one projection, and the ratchet portion includes teeth which selectively engage the at least one projection to rotate the drive gear. ### Claim 7 (depends on 6) The heat pump dispenser of claim 6, wherein the trigger is pivotally mounted on the drive gear, the drive gear includes a post extending from the outer side, and the ratchet portion includes an opening sized to receive the post. ### Claim 8 (depends on 7) The heat pump dispenser of claim 7, wherein the at least one projection includes a plurality of projections circumferentially spaced about the post of the drive gear. ### Claim 9 (depends on 1) The heat pump dispenser of claim 1, wherein trigger assembly includes a trigger button movably mounted to the handle portion, the trigger button includes a post projecting into the handle portion, the trigger includes a mounting portion having an opening for receiving the post of the trigger button, and a biasing member is mounted on the post and engages a seat defined by the handle portion. ### Claim 10 (depends on 1) The heat pump dispenser of claim 1, wherein the heater section includes first and second heat sink elements mounted within the dispensing opening. ### Claim 11 (depends on 10) The heat pump dispenser of claim 10, wherein the adhesive/filler stick is received in a cartridge, the cartridge includes a heater tube sized to be at least partially received in each of the first and second heat sinks, the heater tube formed of a heat conductive material, wherein an inner surface of the heater tube defines a step adapted to engage the adhesive/filler stick, the step together with the adhesive/filler stick defines a reservoir in the heater tube forward of the adhesive/filler stick for receiving melted adhesive/filler. ### Claim 12 (depends on 1) The heat pump dispenser of claim 1, wherein at least one tool is housed in the handle portion. ### Claim 13 A heat pump dispenser comprising: a housing having a handle portion and a barrel portion; a feeder section coupled to the handle portion, the feeder section includes a feeder mechanism and a dispensing trigger assembly operably coupled to the feeder mechanism, the feeder mechanism includes a gear assembly having a drive gear operably engaged to a linear gear provided as part of a plunger housed in the barrel portion, the trigger assembly includes a trigger having a ratchet portion and the drive gear is biased toward the ratchet portion, an outer side of the drive gear, which is normal to a rotational axis of the drive gear, includes at least one projection, the ratchet portion includes teeth which selectively engage the at least one projection to rotate the drive gear which moves the plunger toward a dispensing opening provided in the barrel portion and into engagement with an adhesive/filler stick, wherein the feeder mechanism is selectively actuated by the dispensing trigger assembly to advance the adhesive/filler stick into a heater section of the barrel portion. ### Claim 14 (depends on 13) The heat pump dispenser of claim 13, wherein the gear assembly further includes a rack drive gear engaged to both the drive gear and the linear gear. ### Claim 15 (depends on 14) The heat pump dispenser of claim 14, wherein the drive gear is movably received on a stem of the rack drive gear, and further including a biasing member mounted on the stem and interposed between the drive gear and the rack drive gear to bias the drive gear toward the ratchet portion. ### Claim 16 (depends on 14) The heat pump dispenser of claim 14, wherein the trigger assembly includes a locking pawl selectively engaging the drive gear to prevent counter-rotation of the drive gear and maintain a position of the plunger in the barrel portion, the drive gear is adapted to move toward the rack drive gear to disengage the locking pawl from the drive gear. ### Claim 17 (depends on 13) The heat pump dispenser of claim 13, wherein the trigger is pivotally mounted to the drive gear.