# US 12,215,894 B2 · Towable heater > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,215,894 B2 - Document ID: US12215894B2 - Status: Granted - Kind: B2 - Application number: 18/207,231 - Filed: 2023-06-08 - Published: 2023-10-05 - Granted: 2025-02-04 - Earliest claimed: 2019-03-06 - Assignees: Briggs & Stratton Corporation - Applicants: Briggs & Stratton, LLC - Inventors: Ryan Hahn; Paul Sabatka; Cole Booth - Web page: https://patentgrep.com/patent/US12215894B2 ## CPC - F24H 9/06: Arrangement of mountings or supports - B60P 3/00: Vehicles adapted to transport, to carry or to comprise special loads or objects (ambulances or other vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances A61G3/00; hearses A61G21/00; fire-fighting land vehicles A62C27/00; refuse-collecting vehicles B65F3/00, B65F7/00; snow-removing vehicles E01H; armoured or armed vehicles F41H7/00; self-propelled mine-clearing vehicles F41H11/16) - B62D 21/20: trailer type, i.e. a frame specifically constructed for use in a non-powered vehicle - B62D 63/08: Component parts or accessories - F24H 9/18: Arrangement or mounting of grates or heating means - F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22) - B60P: VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS (vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances A61G3/00) - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) ## Abstract A portable heater includes a housing having an air inlet and an air outlet, one or more burners housing within the housing and configured to heat air passing through the housing from the air inlet to the air outlet, and a duct positioned in a storage compartment of the housing. The duct includes a first end coupled to the storage compartment and a second end extendable from the housing when a door of the storage compartment is in an open position. ## Claims ### Claim 1 A portable heater comprising: a housing comprising an air inlet and an air outlet; one or more burners housed within the housing and configured to heat air passing through the housing from the air inlet to the air outlet; a storage compartment comprising a bottom wall and a side wall each pivotably coupled to the housing, the side wall forming an outer side surface of the portable heater; and a duct positioned in the storage compartment of the housing, the duct comprising a first end coupled to the bottom wall and a second end extendable from the housing when a door of the storage compartment comprising the side wall is in an open position, the duct configured to pivot along with the bottom wall. ### Claim 2 (depends on 1) The portable heater of claim 1, wherein the bottom wall is substantially horizontal when the door is in a closed position and substantially vertical when the door is in the open position. ### Claim 3 (depends on 2) The portable heater of claim 2, wherein the duct extends in a substantially perpendicular direction from the bottom wall. ### Claim 4 (depends on 3) The portable heater of claim 3, wherein the duct is configured to expand from a first length to a second length, the first length being less than a height of the storage compartment, and the second length being longer than a height of the storage compartment. ### Claim 5 (depends on 2) The portable heater of claim 2, further comprising a hinge coupling the door to the housing. ### Claim 6 (depends on 5) The portable heater of claim 5, wherein the door is configured to rotate from the open position to the closed position when the second end of the duct is pushed toward the first end of the duct. ### Claim 7 (depends on 1) The portable heater of claim 1, wherein the side wall of the door is configured to form at least a portion of a ramp when the door is in the open position, the ramp configured to support the duct. ### Claim 8 (depends on 7) The portable heater of claim 7, wherein the door further comprises a top wall pivotably coupled to the side wall, wherein the top wall forms a top of the storage compartment when the door is in a closed position and forms a portion of the ramp when the door is in the open position. ### Claim 9 (depends on 1) The portable heater of claim 1, wherein the door comprises a top wall coupled to the side wall, wherein the side wall forms a portion of a side of the housing, and the top wall forms a portion of a top of the housing. ### Claim 10 (depends on 9) The portable heater of claim 9, wherein the duct is configured to be condensed to fit in the storage compartment between the top wall and the bottom wall when the door is in a closed position. ### Claim 11 A portable heater comprising: a housing comprising a storage compartment, a door providing access to the storage compartment and comprising a window, an air inlet, and an air outlet; a burner housed within the housing and configured to heat air passing through the housing from the air inlet to the air outlet; a generator positioned in the storage compartment and selectively providing power to the burner; a controller operably coupled to and configured to control operation of the burner and operation of the generator; and a user interface positioned in the storage compartment and operably coupled to the controller and configured to receive inputs from an operator, wherein the controller is configured to control a supply of power from the generator to the burner based on an input from the user interface, wherein the user interface is aligned with and viewable through the window from outside the housing. ### Claim 12 (depends on 11) The portable heater of claim 11, wherein the controller is configured to control the user interface to indicate a status of the portable heater based on a color of the user interface. ### Claim 13 (depends on 11) The portable heater of claim 11, wherein the controller is configured to provide status information and performance information about the portable heater to the user interface for display. ### Claim 14 (depends on 13) The portable heater of claim 13, wherein the status information and performance information comprise at least one of an operating temperature of the burner, a burner output, a generator output, an operating pressure of the burner, an engine speed of the generator, or a fuel level of the generator or the burner.