Patent ID: 11897032
Assignee: THE BOEING COMPANY
Field: Other special machines (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 7:
8. An apparatus for powder bed fusion, the apparatus comprising:
a wall that defines a shaft;
a powder platform configured to support a powder bed within the shaft and configured to move through the shaft; and
a sealing device that is affixed to the powder platform and extends away from the powder platform, the sealing device contacting the wall to form a seal between the powder platform and the wall,
wherein the sealing device comprises:
a first arm contacting the powder platform; and
a second arm contacting the wall, wherein a portion of the powder bed that is between the first arm and the second arm applies a first force directed toward the powder platform against the first arm and a second force directed toward the wall against the second arm.