US 12,152,380 B2
Pneumatic valve control device
Bin Guo, Shanghai (CN)
Assigned to Kohler (China) Investment Co., Ltd., Shanghai (CN)
Filed by Kohler (China) Investment Co., Ltd., Shanghai (CN)
Filed on Sep. 13, 2023, as Appl. No. 18/367,818.
Application 18/367,818 is a continuation of application No. 18/083,975, filed on Dec. 19, 2022, granted, now 11,873,630.
Claims priority of application No. 202123254981.7 (CN), filed on Dec. 22, 2021.
Prior Publication US 2023/0417036 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E03D 1/30 (2006.01); F16K 31/122 (2006.01); F16K 24/04 (2006.01)
CPC E03D 1/302 (2013.01) [F16K 31/1221 (2013.01); F16K 31/1225 (2013.01); F16K 24/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control device, comprising:
a first piston in a first cylinder;
a locking and releasing mechanism configured to lock and release the first piston when the first piston is in a first position;
a second piston in a second cylinder; and
a partition channel between the first cylinder and the second cylinder;
wherein when the locking and releasing mechanism is released, the first piston moves from the first position to a second position and the partition channel is in a closed state.