# US 11,110,305 B2 · UAV—or personal flying device-delivered deployable descent device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,110,305 B2 - Document ID: US11110305B2 - Status: Granted - Kind: B2 - Application number: 16/532,125 - Filed: 2019-08-05 - Published: 2020-02-27 - Granted: 2021-09-07 - Earliest claimed: 2010-12-15 - Applicants: Robert Marcus - Inventors: Robert Marcus - Web page: https://patentgrep.com/patent/US11110305B2 ## CPC - A62B 5/00: Other devices for rescuing from fire (ladders E06C) - B64U 10/14: with four distinct rotor axes, e.g. quadcopters - B64U 30/26: Ducted or shrouded rotors - B64U 80/80: by vehicles - B64U 2101/55: for life-saving or rescue operations; for medical use - B64U 2101/60: for transporting passengers; for transporting goods other than weapons - E06C 1/56: Rope or chain ladders - E06C 5/00: Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles (ladders having wheels, rollers, or runners E06C1/397 {; ladders on boats B63B27/14}) - E06C 9/14: with non-rigid longitudinal members, e.g. rope or chain ladders, ladders of the lazy-tongs type - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) - B64U: UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR - E06C: LADDERS (E04F11/00 takes precedence; step-stools A47C12/00; adaptation of ladders to use on ships B63B, to use on aircraft B64; scaffolding E04G) ## Abstract An unmanned aerial vehicle (UAV) or manned/unmanned personal flying device (PFD) may be used to deliver a deployable descent system to an elevated location at which people await rescue, such as people trapped in an upper story of a burning building. The UAV or PFD may be used to deliver the descent system, attach the descent system to the building, and deploy the descent system. After deployment, the descent system may be tensioned to prevent sway and facilitate descent. Standoffs may be installed or integrated into the descent system to provide for adequate handholds for descending individuals. Various equipment and methods used in such systems are described herein. ## Claims ### Claim 1 A method comprising: controlling an aerial vehicle having a body and a plurality of vertical lifters configured to provide lift to the body to deliver a first end of a deployable descent device to a feature at an elevated location while supporting the first end of the deployable descent device outboard of the vertical lifters; causing the aerial vehicle to anchor the first end of the deployable descent device to the feature at the elevated location while the first end of the deployable descent device is supported by the aerial vehicle; and causing the aerial vehicle to release the first end of the deployable descent device after the first end of the deployable descent device is anchored to the feature. ### Claim 2 (depends on 1) The method of claim 1, wherein the deployable descent device is selected from a group of deployable descent devices, the group of deployable descent devices includes the deployable descent device and one or more additional deployable descent devices, and has a second end opposite the first end, the method further comprising: controlling the aerial vehicle to deliver a first end of a first additional deployable descent device of the one of the one or more additional deployable descent devices to an additional elevated location associated with the second end of the deployable descent device, and causing the aerial vehicle to attach the first end of the first additional deployable descent device to the second end of the deployable descent device. ### Claim 3 (depends on 1) The method of claim 1, wherein the aerial vehicle further includes at least one mechanical manipulator arm mounted to the body, and the method further comprises causing the at least one mechanical manipulator arm to anchor the first end of the deployable descent device to the feature. ### Claim 4 (depends on 1) The method of claim 1, wherein the feature is a feature that is accessible through a side of a building via an opening, the feature includes one or more interior surfaces accessible through the opening in the side of the building, the first end of the deployable descent device includes a crossbar anchor device having a major dimension that is larger than a dimension of the opening and one or more minor dimensions that are smaller than the dimension of the opening, and the method further comprises: causing the aerial vehicle to pass the crossbar anchor device through the opening while in a first orientation relative to the aerial vehicle, causing the aerial vehicle to cause the crossbar anchor device to rotate to a second orientation after being passed through the opening and to position the crossbar anchor such that opposing ends of the crossbar anchor contact the one or more interior surfaces and the crossbar anchor spans the opening, thereby preventing the crossbar anchor from being pulled back out through the opening. ### Claim 5 (depends on 1) The method of claim 1, wherein the feature is a feature that is accessible through a side of a building via an opening and the method further comprises: causing the aerial vehicle to pass through the opening and into the building, causing the aerial vehicle to encircle an internal support structure of the building while supporting the first end of the deployable descent device, and causing, after encircling the internal support structure with the first end of the deployable descent device, the first end of the deployable descent device to be anchored to an item selected from the group consisting of: another portion of the deployable descent device and an object in the interior of the building. ### Claim 6 (depends on 1) The method of claim 1, wherein the first end of the deployable descent device includes an anchoring device and causing the aerial vehicle to anchor the first end of the deployable descent device to the feature while the first end of the deployable descent device is supported by the aerial vehicle further comprises installing the anchoring device in a side of a building. ### Claim 7 (depends on 6) The method of claim 6, wherein the anchoring device is selected from the group consisting of: concrete bolts and concrete bolts with expansion features, the method further comprising installing the anchoring device by causing the aerial vehicle to perform one or more tasks selected from the group consisting of: placing the anchoring device in a hole in the side of the building, drilling the hole in the side of the building to receive the anchoring device, and using a powder-actuated fastener system to install the anchoring device in the side of the building. ### Claim 8 (depends on 1) The method of claim 1, wherein the aerial vehicle further includes a mechanical interface that is configured to mate with the first end of the deployable descent device and support the first end of the deployable descent device outboard of the vertical lifters during delivery of the deployable descent device to the elevated location and the method further comprises mating the first end of the deployable descent device to the mechanical interface. ### Claim 9 (depends on 8) The method of claim 8, wherein the mechanical interface is positioned in a fixed location with respect to the body of the aerial vehicle. ### Claim 10 (depends on 9) The method of claim 9, wherein the aerial vehicle further includes a support structure that supports the mechanical interface in the fixed location relative to the body of the aerial vehicle and the method further comprises mating the first end of the deployable descent device to the mechanical interface by interfacing the first end of the deployable descent device to the support structure. ### Claim 11 (depends on 10) The method of claim 10, wherein the support structure is a rigid external framework. ### Claim 12 (depends on 9) The method of claim 9, wherein: the deployable descent device is a ladder, the first end of the ladder is equipped with a hook having a shank portion and a bend portion, and the method further comprises mating the hook to the mechanical interface such that the mechanical interface supports the hook in a position wherein the bend portion of the hook is further outboard of the aerial vehicle than the shank portion. ### Claim 13 (depends on 1) The method of claim 1, wherein the deployable descent device is a ladder selected from the group consisting of: a flexible ladder and a segmented ladder. ### Claim 14 (depends on 13) The method of claim 13, wherein the ladder is the flexible ladder and is stored in a ground-based apparatus and the method further comprises causing the aerial vehicle to pull at least a portion of the flexible ladder out of the ground-based apparatus while the first end of the flexible ladder is supported by the aerial vehicle. ### Claim 15 (depends on 13) The method of claim 13, wherein the deployable descent device is the flexible ladder and the method further comprises securing a winch to a location at ground level and then applying a tensioning load to the flexible ladder using the winch after the flexible ladder is anchored to the feature. ### Claim 16 (depends on 13) The method of claim 13, wherein the deployable descent device is the flexible ladder and the method further comprises: securing a pulley to a location at ground level, passing a cable that is either part of the deployable descent device or attached thereto through the pulley, and applying a tensile load to a portion of the cable so as to cause the flexible ladder to be taut, wherein at least the tensile load is thereby applied to the pulley. ### Claim 17 (depends on 13) The method of claim 13, wherein the deployable descent device is the flexible ladder and the method further comprises: connecting a cable that is either part of the deployable descent device or attached thereto to a winch mounted on a ground vehicle; and applying a tensioning load to the flexible ladder after the flexible ladder is anchored to the feature using the winch. ### Claim 18 (depends on 13) The method of claim 13, wherein the elevated location is on a building, the ladder includes standoffs, and the method further comprises anchoring a second end of the flexible ladder to a fixed location at a lower elevation than the elevated location such that the standoffs offset a substantial portion of the ladder from a side of the building. ### Claim 19 (depends on 18) The method of claim 18, further comprising causing the aerial vehicle to, using one or more tools mounted to the aerial vehicle, connect at least some of the standoffs to the side of the building. ### Claim 20 (depends on 19) The method of claim 19, wherein the method further comprises causing the aerial vehicle to connect at least some of the standoffs to the side of the building using concrete nails. ### Claim 21 (depends on 18) The method of claim 18, wherein at least some of the standoffs have suction cups at ends thereof that contact the side of the building and the method further comprises causing the aerial vehicle to attach the suction cups to a smooth surface of the side of the building. ### Claim 22 (depends on 18) The method of claim 18, wherein at least some of the standoffs have magnets at ends thereof that contact the side of the building and the method further comprises causing the aerial vehicle to attach the magnets to a metal surface of the side of the building. ### Claim 23 (depends on 13) The method of claim 13, wherein the ladder is the flexible ladder and is wound around a spool carried by the aerial vehicle, the method further comprising causing the flexible ladder to unwind from the spool.