US 12,311,619 B2
Molding apparatus with combined core plunger/ejector and methods therefor
Sam Pirahanchi, Novato, CA (US); and Erick Davidson, Piedmont, CA (US)
Assigned to Arris Composites Inc., Berkeley, CA (US)
Filed by Arris Composites Inc., Berkeley, CA (US)
Filed on Oct. 28, 2022, as Appl. No. 17/975,983.
Claims priority of provisional application 63/272,777, filed on Oct. 28, 2021.
Prior Publication US 2023/0140739 A1, May 4, 2023
Int. Cl. B29C 70/54 (2006.01); B29C 70/48 (2006.01)
CPC B29C 70/54 (2013.01) [B29C 70/48 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A molding apparatus for molding a part, comprising:
an A-portion of the molding apparatus;
a B-portion of the molding apparatus, at least one of the A-portion or the B-portion is movable to open and close the molding apparatus; and
a core plunger/ejector, wherein the core plunger/ejector is physically independent of the A-portion and the B-portion, and is movable to:
(a) form a sealed cavity in which a charge is received, wherein a surface of core plunger/ejector, a surface of the A-portion, and a surface of the B-portion form the sealed cavity; and
(b) apply pressure to the charge in the cavity; and wherein
the core plunger/ejector is movable in a first direction to fully release the part from the core plunger/ejector, and movable in a second direction that is opposite to the first direction to fully release the part from the B-portion of the molding apparatus.