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US 12,516,170 B1Granted
3-D printable expendable lost foam pattern
AssigneeBrunswick Corporation
InventorJacob A. Belke
Life of this patent
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Abstract
A lost foam casting pattern that is constructed of a plastic filament, a foaming agent, and a coating. The lost foam casting pattern is printable on a 3-D printer. A 3-D printable material for the creation of a lost foam casting pattern is also disclosed where the material includes 95.0% to 99.75% by weight of a plastic filament combined with 0.25% to 5.00% by weight of a foaming agent. A method for preparing a lost foam casting pattern using the 3-D printable material is further described.
Claims6
A lost foam casting pattern comprising:
- a printed lost foam casting pattern including a plastic filament and a foaming agent;
- and
- a coating applied to the printed lost foam casting pattern;
- wherein the foaming agent is selected from one of:
- azodicarbonamide, sodium bicarbonate+citric acid, zinc stearate, calcium stearate, 5-phenyltetrazole, and a combination thereof.
2 more elements
Dependencies are inferred from the claim text.