# US 2024/0200315 A1 · Subfloor accessible bath > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0200315 A1 - Document ID: US20240200315A1 - Status: Published application - Kind: A1 - Application number: 18/390,611 - Filed: 2023-12-20 - Published: 2024-06-20 - Earliest claimed: 2022-12-20 - Applicants: Jonathan Levi - Inventors: Jonathan Levi - Web page: https://patentgrep.com/patent/US20240200315A1 ## CPC - E03C 1/2306: {the plug being operated by hand contact} - E03C 1/232: combined with overflow devices (overflow devices for basins or baths per se E03C1/24) - E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS ## Abstract A system is provided. The system may include one or more of a tub, a platform, and a lift, coupled to a bottom surface of the platform. The tub includes a top surface, a bottom surface, and a concave well between the top and bottom surfaces. The platform includes water openings extending through a thickness of the platform. The lift is disposed within the tub and is configured to raise and lower the platform within the well. ## Claims ### Claim 1 A system comprising: a tub that includes a top surface, a bottom surface, and a concave well therebetween; a platform that includes water openings extending therethrough; and a lift, coupled to a bottom surface of the platform, the lift disposed within the tub and configured to raise and lower the platform within the well. ### Claim 2 (depends on 1) The system of claim 1, wherein the top surface of the tub is configured to be substantially coplanar with a floor of a building when installed. ### Claim 3 (depends on 1) The system of claim 1, wherein the platform is configured to support a seated user on the platform. ### Claim 4 (depends on 1) The system of claim 1, further comprising: a filler in one or more sides of the well, configured to add water at a predetermined temperature and volume to the tub. ### Claim 5 (depends on 1) The system of claim 1, further comprising: a drain with connected overflow, proximate the bottom surface of the tub, configured to retain water within the well when closed and allow water to drain from the well when opened; and a macerator, coupled to the drain, configured to break up debris from the tub when water is drained and provide the water and broken up debris to a water outlet. ### Claim 6 (depends on 1) The system of claim 1, further comprising: a door, within and coplanar with the platform, configured to provide access to the well and the lift when opened. ### Claim 7 (depends on 1) The system of claim 1, further comprising: a plurality of vertical rollers, coupled to upper portions of the lift, configured to maintain a consistent distance between the lift and the well. ### Claim 8 (depends on 7) The system of claim 7, further comprising: a plurality of springs, coupled to the plurality of rollers, to provide horizontal force to the plurality of rollers to maintain contact with side surfaces of the well. ### Claim 9 A system, comprising: a tub, configured to hold water, comprising: top and bottom surfaces; a concave well, affixed and conforming to an opening at the top surface; and a drain, disposed in proximity to the bottom surface, configured to retain water within the well when closed and allow water to drain from the well when opened; a platform, configured to fit within the opening when in a raised position; a lift, affixed to an underside of the platform, configured to raise the platform to the raised position and lower the platform within the well; and an actuator, coupled to the lift, configured to cause the lift to raise or lower the platform. ### Claim 10 (depends on 9) The system of claim 9, further comprising: a macerator, coupled to the drain, configured to break up debris from the tub when water is drained and provide the water and broken up debris to a water outlet. ### Claim 11 (depends on 9) The system of claim 9, wherein the platform is configured to support a seated user on the platform. ### Claim 12 (depends on 9) The system of claim 9, further comprising: a filler in one or more vertical sides of the well, configured to add water at a predetermined temperature and volume to the tub. ### Claim 13 (depends on 9) The system of claim 9, further comprising: a vertical member, coupled to the drain and extending at least to the top surface of the tub, configured to allow a user to open or close the drain. ### Claim 14 A method, comprising: closing a drain within a well of a tub to prevent water flow from the tub; initiating a water flow at a desired temperature and volume into the tub; controlling, by a lift coupled within the tub, a platform configured to allow water flow therethrough, the lift configured to raise or lower the platform within the well; and lowering, by the lift, the platform to a depth within the well. ### Claim 15 (depends on 14) The method of claim 14, wherein controlling the lift comprises: rotating, by an actuator, a worm gear engaging threads of a threaded member of the lift, wherein a bottom surface of the platform is coupled to a top surface of the lift; extending the threaded member away from the actuator, by the rotating; and lowering the platform, by the extending. ### Claim 16 (depends on 14) The method of claim 14, further comprising: opening the drain; and activating a macerator, coupled to an output of the drain, to break up debris in water received from the drain. ### Claim 17 (depends on 14) The method of claim 14, further comprising: determining a user is seated on the platform, and in response: controlling the lift. ### Claim 18 (depends on 14) The method of claim 14, wherein initiating the water flow at the desired temperature and volume into the tub comprises: selecting between an external water source outside the tub and an internal water source within the well; selecting a desired water temperature from the selected water source; and selecting one or more of a desired water volume and a desired water depth within the well. ### Claim 19 (depends on 14) The method of claim 14, further comprising: receiving a command at a controller, and in response: determining a user is seated on the platform, and in response: closing the drain; initiating the water flow; controlling the platform; and lowering the platform to a depth within the well. ### Claim 20 (depends on 14) The method of claim 14, further comprising: receiving a command at a controller, and in response: disabling the water flow into the tub; opening the drain; and raising, by the lift, the platform to a level coplanar with the top surface of the tub.