US 11,746,914 B2
Anti-overflow pipe
Hao Wang, Beijing (CN)
Assigned to Beijing Shenchuang Century Information Technology Co., Ltd., Beijing (CN)
Appl. No. 17/594,873
Filed by Beijing Shenchuang Century Information Technology Co., Ltd., Beijing (CN)
PCT Filed Aug. 16, 2019, PCT No. PCT/CN2019/101144
§ 371(c)(1), (2) Date Nov. 2, 2021,
PCT Pub. No. WO2020/237844, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 201910447527.1 (CN), filed on May 27, 2019; and application No. 201920776856.6 (CN), filed on May 27, 2019.
Prior Publication US 2022/0252169 A1, Aug. 11, 2022
Int. Cl. F16K 15/14 (2006.01)
CPC F16K 15/147 (2013.01) 20 Claims
OG exemplary drawing
 
1. An anti-overflow pipe, characterized by comprising:
a pipe wall and a valve;
on a plane perpendicular to lengthwise direction of the pipe wall, a cross-section of an inner side wall of the pipe wall is an elliptical shape, a cross-section of an outer side wall of the pipe wall has a closed elliptical shape; in a plane where a major axis of the elliptical shape of the inner side wall and lengthwise direction of the pipe wall are located, a cross-section of the valve is a V-shaped structure and the valve is connected with the inner side wall, the valve is provided with a slit for unidirectionally conducting fluid; and
on a plane perpendicular to lengthwise direction of the pipe wall, a cross-section of the outer side wall of the pipe wall is an elliptical shape, the oval origin of the cross-section of the outer side wall coincides with the oval origin of the cross-section of the inner side wall, wherein, said oval origin refers to an intersection of the major axis with the minor axis of the elliptical shape; along a curve direction of the elliptical shape of the inner side wall, a wall thickness of the pipe wall gradually decreases from an end of a minor axis of the elliptical shape to an end of the major axis of the elliptical shape.