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US 2019/0293192 A1Published application
Cushioned Check Valve
AssigneeKennedy Valve Company
InventorPaul Kennedy
Life of this patent
Estimating the term…
Abstract
A hinge pin for a check valve includes a shaft, a first end of the shaft, a second end of the shaft opposite the first end, and a first connection element on the shaft between the first end and the second end. The first connection element lockably connects to a valve disk assembly, the first end having a second connection element to connect to an oil-cushion arm, the second end having a third connection element to connect to a counterweight arm, the shaft being composed of maraging steel.
Claims19
A hinge pin for a check valve for a fluid flow system, the hinge pin comprising:
- a shaft having a first end and a second end, the second end of the shaft opposite the first end;
- and
- a first connection element on the shaft between the first end and the second end, the first connection element configured to lockably connect to a valve disk assembly,
- the first end having a second connection element,
- the second end having a third connection element configured to connect to a counterweight arm,
- the shaft being composed of maraging steel, the maraging steel including 15 to 25 percent by weight nickel.
3 more elements
A check valve for a fluid flow system, comprising:
- a valve body having an inlet, an outlet, and a flow channel between the inlet and the outlet;
- and
- a check valve closing assembly in the flow channel of the valve body,
- the check valve closing assembly including a hinge pin and a valve disk assembly, the hinge pin extending through the valve body, the hinge pin lockably connected to the valve disk assembly, the valve disk assembly movable between an open position permitting a fluid to flow from the inlet of the valve body toward the outlet of the valve body, and a closed position blocking the fluid flow from the outlet toward the inlet of the valve body, the hinge pin being composed of maraging steel.
1 more element
(canceled)
Dependencies are inferred from the claim text.