US 12,276,366 B2
System and method for producing spray foam insulated pipe with channels, tubes or conduits
John Carusiello, Lemont, IL (US); and Sandeep Adka, Karnataka (IN)
Assigned to PERMA-PIPE, INC., Niles, IL (US)
Appl. No. 17/640,507
Filed by PERMA-PIPE, INC., Niles, IL (US)
PCT Filed Sep. 4, 2019, PCT No. PCT/US2019/049501
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/045740, PCT Pub. Date Mar. 11, 2021.
Prior Publication US 2022/0349512 A1, Nov. 3, 2022
Int. Cl. F16L 59/02 (2006.01); B29C 44/12 (2006.01); B29C 63/14 (2006.01); B29K 25/00 (2006.01); B29K 75/00 (2006.01); B29K 105/04 (2006.01); F16L 59/04 (2006.01)
CPC F16L 59/028 (2013.01) [B29C 44/12 (2013.01); B29C 63/14 (2013.01); F16L 59/027 (2013.01); F16L 59/029 (2013.01); F16L 59/04 (2013.01); B29K 2025/06 (2013.01); B29K 2075/00 (2013.01); B29K 2105/04 (2013.01); B29K 2995/0015 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method of insulating a pipe system comprising the steps of:
providing a length of a main pipe having an internal surface and an external surface;
providing a plurality of channels, tubes or conduits attached to the external surface of the main pipe and spaced about a circumference thereof;
applying a spray foam insulation to the external surface of the main pipe; and
prior to a step of curing the spray foam insulation, applying a compressive force against an exposed outer surface of the spray foam insulation to prevent a bulge from forming over the channels, tubes or conduits so that the outer surface of the insulation has a uniform radius; and
wrapping a ribbon-shaped member under tension about the spray foam insulation, the plurality of channels, tubes or conduits and the main pipe in successive overlapping passes wherein the compressive force is supplied by the ribbon-shaped member.