US 11,774,011 B2
Non conductive rubber hose
Aaron David Clark, Lambertville, MI (US); Gina Theresa Clark, Lambertville, MI (US); Doris Ann Showalter, Bowling Green, OH (US); and Chad Christopher Borton, Napoleon, OH (US)
Assigned to DANFOSS A/S, Nordborg (DK)
Filed by Danfoss A/S, Nordborg (DE)
Filed on Apr. 6, 2022, as Appl. No. 17/714,702.
Application 17/714,702 is a division of application No. 15/892,985, filed on Feb. 9, 2018, granted, now 11,300,232.
Claims priority of provisional application 62/457,651, filed on Feb. 10, 2017.
Prior Publication US 2022/0228679 A1, Jul. 21, 2022
Int. Cl. B29C 48/21 (2019.01); F16L 11/12 (2006.01); F16L 11/08 (2006.01); B32B 1/00 (2006.01); C08L 23/16 (2006.01); B32B 1/08 (2006.01); C08J 5/04 (2006.01); C08K 3/22 (2006.01); C08K 3/34 (2006.01); C08K 3/36 (2006.01); C08L 9/00 (2006.01); B32B 5/02 (2006.01); B32B 25/08 (2006.01); B32B 25/10 (2006.01); B32B 25/14 (2006.01); C08K 5/12 (2006.01); B29C 48/10 (2019.01); B29K 23/00 (2006.01); B29K 105/00 (2006.01); B29K 509/08 (2006.01); B29K 511/00 (2006.01)
CPC F16L 11/12 (2013.01) [B29C 48/21 (2019.02); B32B 1/00 (2013.01); B32B 1/08 (2013.01); B32B 5/024 (2013.01); B32B 25/08 (2013.01); B32B 25/10 (2013.01); B32B 25/14 (2013.01); C08J 5/046 (2013.01); C08K 3/22 (2013.01); C08K 3/346 (2013.01); C08K 3/36 (2013.01); C08K 5/12 (2013.01); C08L 9/00 (2013.01); C08L 23/16 (2013.01); F16L 11/085 (2013.01); B29C 48/10 (2019.02); B29K 2023/06 (2013.01); B29K 2023/16 (2013.01); B29K 2105/0032 (2013.01); B29K 2105/0038 (2013.01); B29K 2105/0044 (2013.01); B29K 2509/08 (2013.01); B29K 2511/00 (2013.01); B29K 2995/0007 (2013.01); B29K 2995/007 (2013.01); B29K 2995/0077 (2013.01); B32B 2307/206 (2013.01); B32B 2307/536 (2013.01); B32B 2307/54 (2013.01); C08K 2003/2241 (2013.01); C08L 2205/025 (2013.01); Y10T 428/139 (2015.01); Y10T 428/1397 (2015.01)] 17 Claims
OG exemplary drawing
 
1. A method of making a non-conductive rubber hose comprising
blending a first composition comprising an ethylene propylene diene monomer (EPDM) polymer, wherein the EPDM polymer comprises low ethylene EPDM polymer having no more than 60 wt % ethylene by ASTM 3900 and high ethylene EPDM polymer having at least 69 wt % ethylene by ASTM 3900, in a weight ratio of about 10:1 to about 1:1, an electrically-resistive filler, and a silane-treated filler;
extruding the first composition onto a mandrel to form an EPDM rubber tube layer;
applying a textile braid over the EPDM tube layer to form reinforcement layer;
extruding a second composition over the reinforcement layer to form a cover layer in a green hose;
vulcanizing the green hose; and
expelling the hose from the mandrel.