US 12,391,083 B1
Suspension air spring with continuously variable volume
Kyle M. Smith, Milford, MI (US); and Robert Patrick Marble, White Lake, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jul. 2, 2024, as Appl. No. 18/761,658.
Int. Cl. B60G 11/27 (2006.01)
CPC B60G 11/27 (2013.01) [B60G 2202/152 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A suspension air spring, comprising:
a spring mount assembly;
a diaphragm seat spaced from the spring mount;
a diaphragm having a first end mounted to the spring mount assembly and a second end mounted to the diaphragm seat to create a main chamber between the spring mount assembly and the diaphragm seat, wherein the diaphragm rolls upon the diaphragm seat; and
an inflatable secondary bladder expandable within the main chamber.