Title:
排水システム
Document Type and Number:
Japanese Patent JP6969706
Kind Code:
B2
Abstract:
A drainage system according to the invention of the present invention comprises: a bathtub comprising an inner wall forming a water storage part for accommodating hot water, and an outer wall surrounding the inner wall; a first drainage hole formed in the inner wall; and a second drainage hole, formed in the inner wall and having a greater surface area than the first drainage hole, wherein the second drainage hole comprises a recessed part which protrudes from the inner wall to the opposite side to the water storage part and forms a level difference with respect to the inner wall, and a lid which seals the recessed part, a plurality of first holes are formed in the side surface of the recessed part that forms a level difference, and water is drained, from the water storage part and via the plurality of first holes, by the movement of the lid toward the base of the recessed part.
Inventors:
Masami Hagiwara
Mariko Tobita
Satoshi Minesawa
Takuya Furuhashi
Nara Shirakawa
Yufumi Kurokawa
Mariko Tobita
Satoshi Minesawa
Takuya Furuhashi
Nara Shirakawa
Yufumi Kurokawa
Application Number:
JP2021520025A
Publication Date:
November 24, 2021
Filing Date:
May 23, 2019
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
E03C1/22; A47K3/00
Domestic Patent References:
| JP2017043929A | ||||
| JP2008253706A | ||||
| JP2016158774A |
Foreign References:
| CN202990046U |
Attorney, Agent or Firm:
Takada/Takahashi International Patent Office