US 12,331,805 B2
Air spring having composite parts
David A. Palky, Fairlawn, OH (US); and Mark G. Trowbridge, Fairlawn, OH (US)
Assigned to Infinity Engineered Products LLC, Fairlawn, OH (US)
Appl. No. 17/790,682
Filed by INFINITY ENGINEERED PRODUCTS, LLC, Fairlawn, OH (US)
PCT Filed Jan. 8, 2021, PCT No. PCT/US2021/012596
§ 371(c)(1), (2) Date Jul. 1, 2022,
PCT Pub. No. WO2021/142190, PCT Pub. Date Jul. 15, 2021.
Claims priority of provisional application 62/959,531, filed on Jan. 10, 2020.
Prior Publication US 2023/0042131 A1, Feb. 9, 2023
Int. Cl. F16F 9/04 (2006.01); F16F 9/05 (2006.01)
CPC F16F 9/0454 (2013.01) [F16F 9/05 (2013.01); F16F 2222/126 (2013.01); F16F 2226/04 (2013.01); F16F 2230/0005 (2013.01); F16F 2230/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An air spring comprising,
a top plate having a top surface and a bottom surface opposite the top surface;
a flexible sleeve having a retention bead at a terminal end portion of the flexible sleeve;
a clamp ring, the clamp ring forming a cavity with the bottom surface of the top plate, wherein the retention bead is in the cavity and the flexible sleeve extends from the retention bead through a gap formed between a seal end surface of the clamp ring and the bottom surface of the top plate; and
an injection molded collar formed from an injection molded plastic, the injection molded collar operatively shaped to hold the clamp ring to the top plate such that the retention bead and the flexible sleeve are compressed forming an air tight seal between the top plate and the retention bead and flexible sleeve.