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US 11,787,310 B2Granted
Electrically conductive urethane foam
AssigneeMagna Seating Inc.
InventorsEric Kozlowski, Bruno Carraro, Andrew M Vivian, Kaleb Kang
Life of this patent
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Abstract
A high durability electrically conductive urethane foam acts as a variable resistor such that as the foam deflects, conductive particles get closer together, causing electrical resistance to decrease. The electrically conductive foam is further integrated into an automotive seat sensor system.
Claims8
A conductive foam for an automotive seat assembly, said conductive foam comprising:
- a base polyurethane foam;
- said base polyurethane foam being coated and/or saturated with an electrical bonding agent using a wet add-on application;
- and
- said saturated base polyurethane foam being oven cured until dry;
- wherein said electrical bonding agent comprises carbon black conductive particles, a carboxylated styrene-butadiene emulsion latex binder, and a dispersing agent, and
- wherein said base polyurethane foam is formed from a material comprising about 95 PPHP (parts per hundred polyol) high reactivity 6000 molecular weight capped triol polyether polyol, about 3 PPHP glycerine/sucrose initiated polyether polyol, about 2 PPHP glycerin-initiated polyether polyol, and about 0.425 PPHP silicone surfactant.
3 more elements
Dependencies are inferred from the claim text.