Over center high deflection pressure energizing low leakage seal
AssigneeHoneywell International Inc.
InventorsDean Anderson, William L. Giesler, Brad King, Jimmy D. Wiggins
Life of this patent
Estimating the term…
Abstract
A low leakage seal for separating two environments and contacting a component surface is provided. The seal includes a base and an annular rib. The annular rib is coupled to and extends from the base. The annular rib includes at least one contact surface configured to contact the component surface having a plurality of angularly cut radial grooves formed therein. The annular rib flexes and pressure energizes in the presence of a pressure differential between the two environments.
Claims18
A seal for separating a first and second environment, comprising:
- a base;
- and
- an annular rib coupled to and extending from the base, the annular rib including a contact surface having a plurality of angularly cut radial undercut grooves formed therein, each groove having a radial depth, and at least two of the grooves having radial depths that are not equal, the annular rib configured to flex and pressure energize in the presence of a pressure differential between the first and second environments.
A seal for separating a first and second environment, comprising:
- a base;
- and
- first and second annular ribs coupled to and extending from the base, the first and second annular ribs spaced apart from one another to form a cavity therebetween, the first annular rib including a contact surface having a plurality of angularly cut radial undercut grooves formed therein, each groove having a radial depth, and at least two of the grooves having radial depths that are not equal, the first and second annular ribs each configured to flex and pressure energize in the presence of a pressure differential between the first and second environments.
An air turbine starter control valve, comprising:
- an actuator;
- a shaft coupled to the actuator;
- a valve coupled to the shaft;
- and
- a seal axially mounted on the shaft and located between the actuator and the valve, the seal comprising:
- a base;
- and
- first and second annular ribs coupled to and extending from the base, the first and second annular ribs spaced apart from one another to form a cavity therebetween, the first annular rib including a contact surface configured to contact the shaft, the contact surface having a plurality of angularly cut radial undercut grooves formed therein, each groove having a radial depth, and at least two of the grooves having radial depths that are not equal, the first and second annular ribs configured to flex and pressure energize in the presence of a pressure differential between the actuator and the valve.
A fluid control valve, comprising:
- a poppet having first and second ends and configured to travel axially along a predetermined axis in response to a pressure excited thereon;
- and
- a seal positioned concentric to the poppet between the poppet first and second ends, the seal comprising:
- a base;
- and
- an annular rib coupled to and extending from the base, the annular rib including a contact surface configured to contact a surface of the poppet, the contact surface having a plurality of angularly cut radial undercut grooves formed therein, each groove having a radial depth, and at least two of the grooves having radial depths tat are not equal, the annular rib configured to flex and pressure energize in the presence of a pressure differential between the poppet first and second ends.
Dependencies are inferred from the claim text.