US 12,215,785 B1
Shift fork lubrication drip feature
Justin Hall, Ottawa Lake, MI (US); Mark W. Leber, Holland, OH (US); Shane T. Smith, Sylvania, OH (US); Michael D. Cook, Holland, OH (US); and Nicholas Oen, Sylvania, OH (US)
Assigned to DANA HEAVY VEHICLE SYSTEMS GROUP, LLC, Maumee, OH (US)
Filed by Dana Heavy Vehicle Systems Group, LLC, Maumee, OH (US)
Filed on Sep. 1, 2023, as Appl. No. 18/459,902.
Int. Cl. F16H 63/32 (2006.01); F16H 57/04 (2010.01)
CPC F16H 63/32 (2013.01) [F16H 57/0432 (2013.01); F16H 57/0468 (2013.01); F16H 57/0478 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A transmission shift fork comprising:
an arch-shaped portion, wherein the arch-shaped portion comprises and is continuous with a first arm and a second arm; and
a pair of lobes radially and inwardly projecting from an inner surface of the arch-shaped portion for directing oil to a sleeve engagement region of a clutch, wherein the inner surface comprises a first inner surface of the first arm and a second inner surface of the second arm, and wherein:
the pair of lobes comprises a first lobe and a second lobe,
the first lobe is physically coupled to the first arm and the second lobe is physically coupled to the second arm,
the first lobe extends from the first inner surface of the first arm and the second lobe extends from the second inner surface of the second arm,
the first lobe has a first tip and the second lobe has a second tip,
the first tip is positioned above and pointed toward a first sleeve engagement and the second tip is positioned above and pointed toward a second sleeve engagement, and
a first notch is between the first tip and the first inner surface and a second notch is between the second tip and the second inner surface.