Urinal

Patent metadata

Field	Value
Publication number	US-9739043-B2
Application number	US-201614994748-A
Country	US
Kind code	B2
Filing date	Jan 13, 2016
Priority date	Jan 20, 2015
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A urinal for receiving and discharging urine having a bowl portion having a bowl surface for receiving urine; a spouting device disposed on a top portion of the bowl portion for spouting flush water onto the bowl surface; and a discharge trap portion, communicating with a discharge port disposed on a bottom portion of the bowl portion, for discharging flush water and forming a water seal on a downstream side of the bowl portion. The discharge trap includes a descending conduit, a horizontal conduit, and an ascending conduit, and a cross section perpendicular to a discharging direction of either the horizontal conduit or the ascending conduit on the discharge trap portion is formed so that an inner side of the urinal from a center of the cross section has a smaller cross sectional area than an outer side of the urinal from the center of the cross section.

First claim

What is claimed is:

1. A urinal for receiving and discharging urine, comprising:
a bowl portion having a bowl surface for receiving urine;
a spouting device disposed on a top portion of the bowl portion for spouting flush water onto the bowl surface; and
a discharge trap portion, communicating with a discharge port disposed on a bottom portion of the bowl portion, for discharging flush water and forming a water seal on a downstream side of the bowl portion;
wherein the discharge trap portion includes a descending conduit extending downward from the discharge port, a horizontal conduit connected to the descending conduit and extending horizontally, and an ascending conduit connected to an outlet of the horizontal conduit and extending upward; and
wherein a cross section perpendicular to a discharging direction of the horizontal conduit is formed so that an inner side of the urinal from a center of the cross section of the horizontal conduit has a smaller cross sectional area than an outer side of the urinal from the center of the cross section of the horizontal conduit and/or a cross section perpendicular to a discharging direction of the ascending conduit is formed so that an inner side of the urinal from a center of the cross section of the ascending conduit has a smaller cross sectional area than an outer side of the urinal from the center of the cross section of the ascending conduit.

2. A urinal according to claim 1 , wherein the ascending conduit of the discharge trap portion is formed so that a cross sectional area thereof is essentially constant from an inlet thereof to an outlet thereof.

3. A urinal according to claim 1 , wherein the descending conduit of the discharge trap portion is formed so that a cross sectional area thereof gradually decreases from an inlet thereof to an outlet thereof.

4. A urinal according to claim 2 , wherein the descending conduit of the discharge trap portion is formed so that a cross sectional area thereof gradually decreases from an inlet thereof to an outlet thereof.

5. A urinal according to claim 1 , wherein the descending conduit of the discharge trap portion is formed so that a cross section thereof is essentially circular.

6. A urinal according to claim 2 , wherein the descending conduit of the discharge trap portion is formed so that a cross section thereof is essentially circular.

7. A urinal according to claim 3 , wherein the descending conduit of the discharge trap portion is formed so that a cross section thereof is essentially circular.

8. A urinal according to claim 1 , wherein the horizontal conduit and the ascending conduit of the discharge trap portion are respectively formed so that a width dimension of cross sections thereof has essentially the same size as the smallest width dimension of a flow path cross section at an outlet of the descending conduit.

9. A urinal according to claim 2 , wherein the horizontal conduit and the ascending conduit of the discharge trap portion are respectively formed so that a width dimension of cross sections thereof has essentially the same size as the smallest width dimension of a flow path cross section at an outlet of the descending conduit.

10. A urinal according to claim 3 , wherein the horizontal conduit and the ascending conduit of the discharge trap portion are respectively formed so that a width dimension of cross sections thereof has essentially the same size as the smallest width dimension of a flow path cross section at an outlet of the descending conduit.

11. A urinal according to claim 4 , wherein the horizontal conduit and the ascending conduit of the discharge trap portion are respectively formed so that a width dimension of cross sections thereof has essentially the same size as the smallest width dimension of a flow path cross section at an outlet of the descending conduit.

12. A urinal according to claim 1 , wherein the inner side of the urinal from a center of the cross section of the horizontal conduit has an essentially trapezoidal cross sectional shape and the outer side of the urinal from a center of the cross section of the horizontal conduit has an essentially semicircular cross sectional shape.

13. A urinal according to claim 1 , wherein the inner side of the urinal from a center of the cross section of the ascending conduit has an essentially trapezoidal cross sectional shape and the outer side of the urinal from a center of the cross section of the ascending conduit has an essentially arched cross sectional shape.

Assignees

• Toto Ltd

Inventors

• Seki Yoshifumi
• Matsunaka Satoshi
• Furuta Yuichi
• Yamasaki Hironori

Classifications

• E03D11/18

  Siphons (for pipes in general F16L43/00, F16L45/00 {; if as part of the bowl E03D11/02; connecting the siphon to the bowl}) · CPC title

• E03D13/00 Primary

  Urinals (without flushing devices A47K11/00 ){; Means for connecting the urinal to the flushing pipe and the wastepipe; Splashing shields for urinals} · CPC title

• E03D13/007

  Waterless or low-flush urinals; Accessories therefor (siphons E03C1/281) · CPC title