US2019193124A1PendingUtilityA1
Powder removal
Est. expiryOct 27, 2035(~9.2 yrs left)· nominal 20-yr term from priority
B22F 10/28B22F 10/68B65G 57/035B65G 2203/0283B65G 57/10B65G 2203/0291B08B 3/04B08B 9/00B65G 57/245B22F 2999/00B65G 47/252B22F 3/24B29C 64/153B08B 3/12B29C 64/35B22F 5/10B08B 3/10F15D 1/00B22F 2003/247B08B 2209/005B33Y 40/00B33Y 40/20B22F 10/00Y02P10/25
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Claims
Abstract
A method includes issuing a state change fluid into an internal passage of an additively manufactured article and causing the state change fluid to change from a first state having a first viscosity to a second state that is either solid or has a second viscosity that is higher than the first viscosity within the internal passage. The method can also include causing the state change fluid to change back from the second state to the first state and flushing the state change fluid from the internal passage to remove residual powder from the additively manufactured article.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . An additively manufactured article having an internal passage, wherein the internal passage is cleared of residual powder by a method, the method comprising:
issuing a state change fluid into an internal passage of an additively manufactured article; causing the state change fluid to change from a first state having a first viscosity to a second state that is either solid or has a second viscosity that is higher than the first viscosity within the internal passage; causing the state change fluid to change back from the second state to the first state; and flushing the state change fluid from the internal passage to remove residual powder from the additively manufactured article.Join the waitlist — get patent alerts
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