Patent ID: 11959556
Assignee: DADCO, INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 13:
14. A relief valve assembly comprising:
a main body with a first bore and a coaxial first counterbore collectively extending axially through the main body;
a guide body with a second bore and a coaxial second counterbore collectively axially extending through the guide body and substantially coaxially with the first bore and counterbore of the main body, and the guide body carried by the main body;
a normally closed check valve in the first bore of the main body which when closed prohibits flow of compressed gas through the main body into the counterbore of the guide body and when open permits flow of compressed gas through the first bore of the main body and into the second counterbore of the guide body;
at least one outlet passage in the guide body communicating the counterbore of the guide body with the exterior of the guide body;
an actuator pin received at least in part in the second bore and counterbore of the guide body with a clearance between the actuator pin and the second counterbore of the guide body to permit the flow of compressed gas between the actuator pin and the second counterbore and through the at least one outlet passage when the check valve is at least partially open; and
a knob connected to the actuator pin and with threads engaging complementary threads on the guide body and configured so that rotation of the knob in one of a clockwise or counterclockwise direction advances the actuator pin to at least partially open the normally closed check valve and rotation of the knob in the other of the clockwise or counterclockwise direction retracts the actuator pin relative to the main body to permit the check valve to close,
wherein the knob has a stop portion engageable with the guide body to limit the extent to which the actuator pin may be advanced relative to the check valve by rotation of the knob or the actuator pin has a stop portion engageable with the main body to limit the extent to which the actuator pin can be advanced relative to the check valve by rotation of the knob, or both the knob and the actuator pin have stop portions engageable with the guide and main bodies respectively to limit the extent to which the actuator pin can be advanced relative to the check valve by rotation of the knob.