# US 10,244,905 B2 · Toilet seat apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,244,905 B2 - Document ID: US10244905B2 - Status: Granted - Kind: B2 - Application number: 15/366,037 - Filed: 2016-12-01 - Published: 2017-06-01 - Granted: 2019-04-02 - Earliest claimed: 2015-12-01 - Assignees: Toto Ltd. - Applicants: Toto Ltd. - Inventors: Masami Tsujita; Takeshi Yasugata; Yuji Ota - Web page: https://patentgrep.com/patent/US10244905B2 ## CPC - A47K 13/12: Hinges - A47K 13/00: Seats or covers for all kinds of closets - A47K 13/24: Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22 - A47K 13/305: {Seats with heating devices} - A47K 13/307: {Seats with ventilating devices} - E03D 5/105: {touchless, e.g. using sensors} - E03D 9/052: using incorporated fans - E03D 9/08: Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices (showers A47K3/28; bathing devices for special therapeutic or hygienic purposes A61H33/00, for specific parts of the body A61H35/00 ){; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting} - A47K: SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES - E03D: WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR ## Abstract According to one embodiment, a toilet seat apparatus that includes a main part mounted at a rear upper part of a toilet, a toilet seat provided rotatably with respect to the main part, and a radio wave sensor being provided in the interior of the main part and using a radio wave to sense a human body; and in the state in which the toilet seat is lowered, the toilet seat covers the radio wave sensor, and the radio wave passes through the toilet seat and is radiated frontward of the radio wave sensor. ## Claims ### Claim 1 A toilet seat apparatus, comprising: a main part mounted at a rear upper part of a toilet; a toilet seat provided rotatably with respect to the main part, a rear end part of the toilet seat being positioned at a rear part of the main part; and a radio wave sensor being provided in an interior of the main part and using a radio wave to sense a human body, the rear end part of the toilet seat being positioned rearward of the radio wave sensor, in a state in which the toilet seat is lowered, the toilet seat covering the radio wave sensor in a vertical direction, and the radio wave passing through the toilet seat and being radiated frontward of the radio wave sensor. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein a thickness of a portion of the toilet seat where the radio wave passes through in the state in which the toilet seat is lowered is uniform. ### Claim 3 (depends on 1) The apparatus according to claim 1, wherein at least a portion of the radio wave sensor is positioned higher than a rear end part of an opening of the toilet seat in the state in which the toilet seat is lowered. ### Claim 4 (depends on 1) The apparatus according to claim 1, further comprising a heating unit provided in the toilet seat interior and including a metal, at least a portion of the radio wave sensor being positioned higher than the heating unit in the state in which the toilet seat is lowered. ### Claim 5 (depends on 1) The apparatus according to claim 1, further comprising a toilet seat rotation part supporting the toilet seat pivotally with respect to the main part, the toilet seat rotation part being provided rearward of the radio wave sensor. ### Claim 6 (depends on 5) The apparatus according to claim 5, further comprising a first toilet seat reinforcing part being provided in the interior of the toilet seat above the main part, being positioned frontward of the radio wave sensor, and supporting an upper plate of the toilet seat from below when the upper plate is deformed downward. ### Claim 7 (depends on 6) The apparatus according to claim 6, further comprising a second toilet seat reinforcing part being provided in the interior of the toilet seat above the main part, being positioned above and rearward of the radio wave sensor, and contacting the upper plate of the toilet seat. ### Claim 8 (depends on 7) The apparatus according to claim 7, wherein the radio wave sensor radiates the radio wave frontward through a region between the first toilet seat reinforcing part and the second toilet seat reinforcing part. ### Claim 9 (depends on 5) The apparatus according to claim 5, further comprising: a toilet lid; a toilet lid rotation part supporting the toilet lid pivotally with respect to the main part; and a toilet lid reinforcing part linked to the toilet lid rotation part and the toilet lid, the toilet lid rotation part being provided rearward of the radio wave sensor, the toilet lid reinforcing part being provided from the toilet lid rotation part to a region above the radio wave sensor. ### Claim 10 (depends on 1) The apparatus according to claim 1, further comprising a toilet lid including a light source unit, at least a portion of the radio wave sensor being positioned higher than the light source unit in a state in which the toilet lid is closed.