# US 11,297,893 B2 · Waterproof boot with internal convection system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,297,893 B2 - Document ID: US11297893B2 - Status: Granted - Kind: B2 - Application number: 16/429,617 - Filed: 2019-06-03 - Published: 2019-12-05 - Granted: 2022-04-12 - Earliest claimed: 2018-06-04 - Assignees: TBL Licensing LLC - Applicants: TBL Licensing LLC - Inventors: Ryan Dulude; Brian Lee Strother; James McLain; Stephen Douglas Ammon; Thomas Yeh; Emily V. Miller - Web page: https://patentgrep.com/patent/US11297893B2 ## CPC - A43B 7/06: ventilated - A43B 7/081: {the air being forced from outside} - A43B 7/082: {the air being expelled to the outside} - A43B 7/125: {provided with a vapour permeable member, e.g. a membrane (A43B23/022 takes precedence)} - A43B 13/125: {characterised by the midsole or middle layer} - A43B 13/14: characterised by the constructive form - A43B 13/203: {provided with a pump or valve} - A43B 13/206: {provided with tubes or pipes or tubular shaped cushioning members} - A43B 13/38: Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process - A43B 17/08: ventilated - A43B 17/14: made of sponge, rubber, or plastic materials - A43B 23/081: {Toe stiffeners} - A43B: CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR ## Abstract Disclosed is a waterproof shoe with an improved ventilation mechanism, designed to circulate air from the outside environment through the shoe in order to provide convective cooling to a wearer's foot. In a desired embodiment, the shoe may incorporate a pump-ventilation mechanism which, coupled with airflow channels incorporated in the upper, acts to establish continuous substantially one-way airflow through the shoe in a heel-to-toe direction while a user walks. ## Claims ### Claim 1 A ventilated boot, comprising: an outsole having a bottom surface configured to contact the ground and an opposing top surface; a midsole having a bottom surface secured to the top surface of the outsole and an opposing top surface; a ventilation mechanism comprising an intake reservoir, an exhaust reservoir, and a connecting channel connecting the intake reservoir and the exhaust reservoir, wherein the exhaust reservoir comprises a directional flow channel configured to facilitate air flow in a direction from the exhaust reservoir to an outside environment; and an upper comprising an air flow channel connecting the outside environment to the intake reservoir and a ventilation channel connecting the exhaust reservoir to the outside environment, wherein the directional flow channel is configured to inhibit air flow in a direction from the exhaust reservoir to the intake reservoir, wherein the directional flow channel comprises a main channel extending in a longitudinal direction and a plurality of angled conduits extending from each longitudinal edge of the main channel, and the angled conduits have a dead end configuration, and wherein the angled conduits form an acute angle with the main channel when viewed in an intake to exhaust direction. ### Claim 2 (depends on 1) The boot of claim 1, wherein the upper is substantially waterproof. ### Claim 3 (depends on 1) The boot of claim 1, wherein the angled conduits each have a length that is about 10% to about 40% a length of the main channel. ### Claim 4 (depends on 1) The boot of claim 1, wherein the directional flow channel provides about 65% to about 90% air flow by volume, based on a total volume of air flow into the intake reservoir, in a direction from the intake reservoir to the exhaust reservoir. ### Claim 5 (depends on 1) The boot of claim 1, wherein a volume of the intake reservoir is within a range of about 5 cm3 to about 40 cm3. ### Claim 6 (depends on 1) The boot of claim 1, wherein a volume of the exhaust reservoir is within a range of about 2.8 cm3 to about 28 cm3. ### Claim 7 (depends on 1) The boot of claim 1, wherein the bottom surface of the outsole comprises a raised platform adjacent to the intake reservoir, which is configured to compress the intake reservoir, when weight is applied to the raised platform during a stride. ### Claim 8 (depends on 1) The boot of claim 1, wherein the ventilation mechanism comprises a hollow insert which is a separate component from the midsole. ### Claim 9 (depends on 1) The boot of claim 1, wherein the ventilation mechanism is, at least partially, formed integrally into the midsole. ### Claim 10 (depends on 1) The boot of claim 1, further comprising an insole having a top surface configured to receive a wearer's foot and an opposing bottom surface, wherein the bottom surface of the insole defines an intake pattern configured to channel air flow to the intake reservoir, and an exhaust pattern configured to channel air flow from the exhaust reservoir to a wearer's foot. ### Claim 11 (depends on 10) The boot of claim 10, wherein the intake pattern comprises a hollow depression and a channel which engages with the air flow channel of the upper to channel air from the outside environment to the depression. ### Claim 12 (depends on 10) The boot of claim 10, wherein the exhaust pattern comprises raised lugs and depressed channels extending between the raised lugs, wherein each of the raised lugs defines a perforation extending entirely though the insole. ### Claim 13 (depends on 1) The boot of claim 1, further comprising a removable insole, wherein the ventilation mechanism is disposed within the insole. ### Claim 14 (depends on 1) The boot of claim 1, further comprising one or more ankle pads secured to the upper inside the boot and protruding from the upper so that adjacent areas of the upper are spaced away from the foot or ankle of a wearer to define the air flow channel.