US 11,702,208 B2
Auxetic support elements with ergonomic curvatures for passenger seats
Jose Madrigal, Chihuahua (MX); and Mario Herrera, Chihuahua (MX)
Assigned to Safran Seats USA LLC, Gainesville, TX (US)
Appl. No. 17/632,227
Filed by Safran Seats USA LLC, Gainesville, TX (US)
PCT Filed Aug. 29, 2019, PCT No. PCT/US2019/048795
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/040718, PCT Pub. Date Mar. 4, 2021.
Prior Publication US 2022/0281606 A1, Sep. 8, 2022
Int. Cl. B64D 11/06 (2006.01)
CPC B64D 11/0619 (2014.12) [B64D 11/0647 (2014.12)] 20 Claims
OG exemplary drawing
 
1. A support assembly for a passenger seat, the support assembly comprising:
a supportive surface configured to connect with a frame of the passenger seat, the supportive surface shaped to support a passenger, the supportive surface comprising:
a first portion comprising a first plurality of cells having an auxetic cell geometry that can deform to adopt a synclastic curvature under stress; and
a second portion comprising a second plurality of cells having a non-auxetic cell geometry that can deform to adopt an anticlastic or cylindrical curvature under stress,
wherein the supportive surface further comprises a transition portion wherein the plurality of cells gradually transitions from the auxetic cell geometry of the first portion to the non-auxetic cell geometry of second portion.