US 12,292,018 B2
Gaseous fuel-air mixer with higher mixture uniformity
George Martin Tolhurst, Rugby (GB); Joshua Bradley Bettis, Columbus, IN (US); Alan C. Anderson, Columbus, IN (US); and Jeremy Aaron Lackey, Scottsburg, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by CUMMINS INC., Columbus, IN (US)
Filed on Mar. 15, 2024, as Appl. No. 18/606,873.
Application 18/606,873 is a continuation of application No. 18/017,761, granted, now 11,933,250, previously published as PCT/US2021/041990, filed on Jul. 16, 2021.
Claims priority of provisional application 63/057,414, filed on Jul. 28, 2020.
Prior Publication US 2024/0344491 A1, Oct. 17, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F02M 21/04 (2006.01); F02M 29/04 (2006.01)
CPC F02M 21/04 (2013.01) [F02M 29/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gaseous fuel-air mixer comprising:
an outer shell comprising:
an air intake defining an air intake center axis and configured to receive air, the air intake having an air inlet and an air outlet,
a fuel intake having a fuel inlet centered on a fuel intake center axis, the fuel inlet being configured to receive fuel, and
an outer shell rib; and
an inner shell comprising:
an inner shell intake configured to separately receive the air from the air outlet and the fuel from the fuel intake and to provide a gaseous fuel-air mixture, the inner shell cooperating with the outer shell to define a fuel intake collecting chamber configured to receive the fuel from the fuel inlet and a fuel intake concentrating chamber configured to receive the fuel from the fuel intake collecting chamber and provide the fuel to the inner shell intake; and
an inner shell rib, the inner shell rib being aligned with the outer shell rib.