US 11,892,049 B2
Single-leaf spring made from composite material with a polymer matrix and manufacturing method for said leaf spring
Miguel Ruiz Dealbert, Villarreal (ES); Roberto Estal Vera, Villarreal (ES); and Juan Salamero Laorden, Villarreal (ES)
Assigned to MBHA Projects S.L., Villarreal (ES)
Appl. No. 16/474,912
Filed by MBHA Projects S.L., Villareal (ES)
PCT Filed Dec. 27, 2017, PCT No. PCT/ES2017/070850
§ 371(c)(1), (2) Date Jun. 28, 2019,
PCT Pub. No. WO2018/122432, PCT Pub. Date Jul. 5, 2018.
Claims priority of application No. 16382664 (EP), filed on Dec. 28, 2016.
Prior Publication US 2019/0331187 A1, Oct. 31, 2019
Int. Cl. F16F 1/368 (2006.01); B29B 11/06 (2006.01); B29C 70/48 (2006.01); B32B 5/26 (2006.01); B32B 15/14 (2006.01); B29K 63/00 (2006.01); B29K 307/04 (2006.01); B29K 309/08 (2006.01); B29K 705/00 (2006.01); B29L 31/00 (2006.01)
CPC F16F 1/368 (2013.01) [B29B 11/06 (2013.01); B29C 70/48 (2013.01); B32B 5/26 (2013.01); B32B 15/14 (2013.01); F16F 1/3686 (2013.01); B29K 2063/00 (2013.01); B29K 2307/04 (2013.01); B29K 2309/08 (2013.01); B29K 2705/00 (2013.01); B29L 2031/774 (2013.01); B32B 2260/046 (2013.01); B32B 2262/101 (2013.01); B32B 2262/106 (2013.01); F16F 2224/0208 (2013.01); F16F 2224/0241 (2013.01); F16F 2226/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A single-leaf spring comprising:
an elongated body,
two eyes located near ends of the body, with the body having an upper side and a lower side,
the body comprising:
at least one composite material sheet formed by a set of fiber plies embedded in a polymer matrix to form a single-leaf spring, where the sheet is a single sheet that runs longitudinally along the upper and the lower sides of the body and eyes of the leaf spring and which, by having both sides of the sheet folded, creates the eyes of the leaf spring; and,
a stitching of the at least one composite material sheet between the upper side and the lower side near the eyes of the leaf spring,
wherein the polymer matrix is cured, and
wherein the stitching comprises an outer surface not embedded in the cured polymer matrix.