Patent attributes
A check valve actuator has a body, a sliding seat, a drive shaft, a spring assembly and a knob. The body has a mounting collar, a convex ridge, an internal cavity and a through hole. The mounting collar is formed on the front end of the body and has an internal surface. The internal cavity is formed inside the body. The through hole communicates with the internal cavity. The sliding seat is mounted slidably against the internal surface of the internal cavity and has an annular seat. The drive shaft is extends through the internal cavity and the through hole in the body. The spring assembly is pressed between the closed rear wall of the internal cavity and the annular seat and the drive shaft. The knob is attached to the drive shaft at the rear end of the body.
