Reusable sealing device
View Patent ↗A sealing device for forming an airtight seal between a first body, such as a cure tool, and a second body, such as a vacuum bag, without the use of adhesives. The sealing device may comprise an outer surface attached to the second body, an inner surface configured to face the first body, and two cusps located at opposite edges of the inner and outer surfaces. The sealing device may form a continuous boundary around an area of any shape or size. The sealing device may have a substantially crescent-shaped cross-section, allowing the sealing device to suction to the first body when compressed against the first body. The sealing device may also comprise a tab portion protruding from the inner surface between the first and second cusp for providing a more secure seal between the sealing device and the first body.
1. An elongated sealing device for forming an airtight seal between a first body and a second body, the sealing device comprising:
a primary seal portion having a substantially crescent-shaped cross-section, wherein the primary seal portion comprises:
an outer surface configured to face away from the first body;
an inner surface opposite the outer surface and configured to face toward the first body;
a first cusp at which the outer surface joins with the inner surface; and
a second cusp at which the outer surface joins with the inner surface, wherein the distance from the first cusp to the second cusp defines a width of the sealing device; and
a tab portion protruding outward from and integral with the inner surface of the primary seal portion and configured to mate with the first body, wherein the tab portion comprises:
an elongated secondary seal attached to the inner surface of the primary seal portion and having an inner portion, an outer portion, a third cusp, and a fourth cusp located inward of the first cusp and the second cusp, the secondary seal being substantially crescent-shaped in cross-section and curved in the same direction as the primary seal portion,
wherein the sealing device is flexible and is configured such that when a force compresses the sealing device onto the first body, air is forced out from between the sealing device and the first body and air pressure and friction forces maintain an airtight seal between the sealing device and the first body.
2. The sealing device of claim 1 , wherein the sealing device has a substantially continuous length configured to form a continuous boundary around an area.
3. The sealing device of claim 1 , wherein at least part of the tab portion is shaped to substantially match a groove formed in the first body.
4. The sealing device of claim 1 , wherein the tab portion further comprises:
a linking portion attaching the inner surface of the primary seal portion to the outer portion of the secondary seal such that the first cusp is separated from the third cusp by a distance and the second cusp is separated from the fourth cusp by a distance.
5. The sealing device of claim 1 , wherein the second body is a flexible sheet of material integrally formed to the outer surface of the primary seal portion.