	US 12,261,003 B2
	Excitation protection device acting step by step with single excitation source
Xiaoguang Shi, Shaanxi (CN); Shaobo Duan, Shaanxi (CN); Xin Wang, Shaanxi (CN); and Xibin Ge, Shaanxi (CN)
Assigned to XI' AN SINOFUSE ELECTRIC CO., LTD., Shaanxi (CN)
Appl. No. 18/014,252
Filed by XI' AN SINOFUSE ELECTRIC CO., LTD., Shaanxi (CN)
PCT Filed Sep. 30, 2022, PCT No. PCT/CN2022/123433 § 371(c)(1), (2) Date Jan. 3, 2023, PCT Pub. No. WO2023/071713, PCT Pub. Date May 4, 2023.
Claims priority of application No. 202111252921.3 (CN), filed on Oct. 27, 2021; and application No. 202122591504.3 (CN), filed on Oct. 27, 2021.
Prior Publication US 2024/0249899 A1, Jul. 25, 2024
Int. Cl. H01H 39/00 (2006.01); H01H 9/30 (2006.01)

CPC H01H 39/006 (2013.01) [H01H 9/30 (2013.01); H01H 2039/008 (2013.01)]

20 Claims

1. An excitation protection device acting step by step with a single excitation source, comprising a shell body, an excitation source, impact devices and a conductor, wherein at least two impact devices respectively located in different cavities are provided in the shell body, one side of the impact devices are provided with one excitation source, and the impact devices and the excitation source are respectively in sealed contact with the cavities where the impact devices and the excitation source are located; and the excitation source drives the impact devices to displace simultaneously or successively, and at least one of the impact devices breaks the conductor during a displacement process.