US 11,724,424 B2
Method and fixture for molding a tank with an embedded ring
Kenneth S. Anderson, Rexburg, ID (US); Klint S. Anderson, Rexburg, ID (US); and Chad Strombeck, Ramsey, MN (US)
Filed by Kenneth S. Anderson, Rexburg, ID (US); Klint S. Anderson, Rexburg, ID (US); and Chad Strombeck, Ramsey, MN (US)
Filed on Nov. 8, 2021, as Appl. No. 17/521,299.
Application 15/612,810 is a division of application No. 15/391,439, filed on Dec. 27, 2016, granted, now 9,802,340, issued on Oct. 31, 2017.
Application 17/521,299 is a continuation of application No. 16/862,315, filed on Apr. 29, 2020, granted, now 11,167,457.
Application 16/862,315 is a continuation of application No. 15/612,810, filed on Jun. 2, 2017, granted, now 10,647,031, issued on May 12, 2020.
Claims priority of provisional application 62/393,402, filed on Sep. 12, 2016.
Prior Publication US 2022/0055257 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 41/20 (2006.01); B29C 33/12 (2006.01); B29C 41/04 (2006.01); B29C 41/38 (2006.01); B29C 41/42 (2006.01); B29K 705/00 (2006.01); B29L 31/00 (2006.01)
CPC B29C 41/20 (2013.01) [B29C 33/12 (2013.01); B29C 41/04 (2013.01); B29C 41/38 (2013.01); B29C 41/42 (2013.01); B29K 2705/00 (2013.01); B29L 2031/7172 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A system for manufacturing a product with an embedded ring, the system comprising:
a rotational molding mold comprising at least two mold parts;
a lock ring comprising a plurality of coupler teeth extending perpendicularly from a top surface of a body of the lock ring and the coupler teeth extending parallel to an axis of the lock ring with a 90 degree bend near a top of each of the coupler teeth; and
a fixture for coupling the lock ring to at least one of the at least two mold parts, wherein:
the lock ring is releasably coupled to at least one of the least two mold parts of the rotational molding mold prior to rotomolding a product using the rotational molding mold, and wherein the fixture retains the coupler teeth with the 90 degree bends outside of the rotational molding mold; and
the lock ring is released from the at least one of the least two mold parts of the rotational molding mold in response to removing the product with the ring from the rotational molding mold, wherein the plurality of coupler teeth extends away from an outer surface of the product to securely lock an accessory into place after the molded part is formed.