US 12,075,750 B2
Cat litter box
Zhengjun Zhou, Hangzhou (CN); Liang Gu, Hangzhou (CN); Min Chen, Hangzhou (CN); Jianchun Chen, Hangzhou (CN); Tao Yang, Hangzhou (CN); and Fen Xie, Hangzhou (CN)
Assigned to JIANGSU ZHONGHENG PET ARTICLES JOINT-STOCK CO., LTD., Yancheng (CN)
Appl. No. 18/687,819
Filed by JIANGSU ZHONGHENG PET ARTICLES JOINT-STOCK CO., LTD., Yancheng (CN)
PCT Filed Nov. 26, 2021, PCT No. PCT/CN2021/133472
§ 371(c)(1), (2) Date Feb. 29, 2024,
PCT Pub. No. WO2023/029241, PCT Pub. Date Mar. 9, 2023.
Claims priority of application No. 202111007344.1 (CN), filed on Aug. 30, 2021.
Prior Publication US 2024/0260535 A1, Aug. 8, 2024
Int. Cl. A01K 1/01 (2006.01)
CPC A01K 1/0114 (2013.01) 13 Claims
OG exemplary drawing
 
1. A cat litter box, comprising
a shell assembly, wherein the shell assembly comprises a top shell, a middle shell, and a bottom shell arranged in sequence in a vertical direction, wherein an excrement collection compartment is arranged inside the bottom shell, the excrement collection compartment is arranged opposite to the middle shell, the top shell is detachably connected to the middle shell, the middle shell is detachably connected to the bottom shell, and a mounting cavity is formed between the top shell and the middle shell;
a rotary drum, wherein the rotary drum is rotatably arranged in the mounting cavity; and
a driving assembly, wherein the driving assembly is detachably connected to the middle shell and comprises a driving unit, wherein the driving unit is drivingly connected to the rotary drum;
a sieve plate is further arranged inside the rotary drum, the sieve plate comprises a plate body, and the plate body comprises a first arc-shaped surface, a second arc-shaped surface, and a third arc-shaped surface, and the first arc-shaped surface, the second arc-shaped surface, and the third arc-shaped surface are arranged in sequence in an extending direction of the plate body;
the first arc-shaped surface, the second arc-shaped surface, and the third arc-shaped surface form a wave-shaped structure as a whole in a side direction, a central angle corresponding to the second arc-shaped surface is less than a central angle corresponding to the first arc-shaped surface and a central angle corresponding to the third arc-shaped surface, and an arc radius corresponding to the second arc-shaped surface is greater than an arc radius corresponding to the first arc-shaped surface and an arc radius corresponding to the third arc-shaped surface.