Patent ID: 9464723
Filing Date: 2016-10-11
CPC Classification: F16K

Claim Text:
1. A timing valve, comprising: a moveable hollow timing piston enclosed by a hollow singular body that has a solid end face at a first end thereof that includes an orifice, an open second end, and side walls that define a first enclosed space; a stepped region on an outer surface of the timing piston; a complementary stepped region on an inner surface of the singular body, wherein a diameter of the timing piston and the inner surface of the singular body widens in a region that extends toward the open second end of the timing piston; and a timing annulus that extends toward the second end defined by a space between the outer surface of the timing piston and the inner surface of the hollow singular body; and wherein fluid flowing through the orifice in the end face of the timing piston pushes the timing piston against the timing spring into an open position and forms a space between the stepped region of the timing piston and the complementary stepped region of the singular body that fills with fluid seeping in through the timing annulus, wherein when pressure on the timing piston falls below a first threshold, the timing piston returns to a closed position, wherein the return of the timing piston to a closed position is slowed by the expelling of fluid from the space between the stepped region of the timing piston and the complementary stepped region of the singular body.