Scarf cut backup rings
AssigneeHoneywell International Inc.
InventorSteven Alan Lewis
Life of this patent
Estimating the term…
Abstract
A seal assembly is provided for sealing a gap with a high pressure side and a low pressure side between a first component and a second component. The seal assembly can include a primary seal configured to be arranged on the first component and spanning the gap on the high pressure side between the first and second component; and a backup ring configured to be arranged on the first component adjacent the primary seal on the low pressure side. The backup ring includes an inner diameter and a scarf cut slit at an angle that is a function of the inner diameter of the backup ring.
Claims10
A seal assembly for sealing a gap with a high pressure side and a low pressure side between a first component and a second component, the seal assembly comprising:
- a primary seal configured to be arranged on the first component and spanning the gap on the high pressure side between the first and second component;
- and
- a backup ring configured to be arranged on the first component adjacent the primary seal on the low pressure side, the backup ring having an inner diameter and including a scarf cut slit at an angle that is a function of the inner diameter of the backup ring, wherein the backup ring has a first diameter in a first operating condition and a second, expanded diameter during a second operating condition, the backup ring having a first overlapping end portion and a second overlapping end portion during the first operating condition, wherein the slit has a circumferential length and the backup ring has an overall circumference, the slit circumferential length being no more than about 32% and no less than about 5% of the overall circumference, wherein the backup ring has a diameter less than about 0.7 inches.
A seal assembly for sealing a gap with a high pressure side and a low pressure side between a first component and a second component, the seal assembly comprising:
- a primary seal configured to be arranged on the first component and spanning the gap on the high pressure side between the first and second component;
- and
- a backup ring configured to be arranged on the first component adjacent the primary seal on the low pressure side, the backup ring having an inner diameter and including a scarf cut slit at an angle that is a function of the inner diameter of the backup ring, wherein the backup ring has a first diameter in a first operating condition and a second, expanded diameter during a second operating condition, the backup ring having a first overlapping end portion and a second overlapping end portion during the first operating condition, wherein the slit has a circumferential length and the backup ring has an overall circumference, the slit circumferential length being no more than 8% and no less than 4% of the overall circumference, wherein the backup ring has a diameter greater than about 0.7 inches.
Dependencies are inferred from the claim text.