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US 12,215,785 B1Granted
Shift fork lubrication drip feature
AssigneeDana Heavy Vehicle Systems Group, LLC
InventorsJustin Hall, Mark W. Leber, Shane T. Smith, Michael D. Cook, Nicholas Oen
Life of this patent
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Abstract
A transmission shift fork comprising: an arch-shaped portion, where a pair of lobes are radially and inwardly projecting from an inner surface of the arch-shaped portion directing oil to a sleeve engagement region of a clutch.
Claims15
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.
6 more elements
A transmission shift fork, comprising:
- a first arm positioned on a first side of the transmission shift fork and terminating at a first mounting component;
- a second arm positioned on a second side of the transmission shift fork and terminating at a second mounting component;
- an arch-shaped portion coupling the first arm to the second arm;
- an inner surface formed from respective inner surfaces of the first arm, the second arm, and the arch-shaped portion, wherein the inner surface has a first curvature that extends radially around a first axis and that decreases in radius from the arch-shaped portion to the first mounting component, and decreases in radius from the arch-shaped portion to the second mounting component;
- a first fin extending radially inward, from the inner surface toward the first axis, on the first side, the first fin having a second curvature of a second radius that is larger than a radius of the first curvature at the first arm, such that the first fin increases in width along the first edge;
- and
- a second fin extending radially inward, from the inner surface toward the first axis, on the second side, the second fin having a third curvature of a third radius that is larger than a radius of the first curvature at the second arm, such that the second fin increases in width along the second edge.
4 more elements
An assembly, comprising:
- a sleeve coaxially arranged around a hub, the hub coaxially arranged around a shaft extending along a first axis;
- and
- a shift fork, comprising:
- a first arm terminating at a first mounting component coupled to a first sleeve engagement of the sleeve;
- a second arm coupled to the first arm via an arch-shaped portion, the second arm terminating at a second mounting component coupled to a second sleeve engagement of the sleeve;
- an inner surface extending radially around the first axis;
- and
- a pair of fins extending radially inward, toward the first axis, from the inner surface, the pair of fins including a first fin extending from the inner surface at the first arm, the first fin increasing in width from the arch-shaped portion toward the first mounting component, and a second fin extending from the inner surface at the second arm, the second fin increasing in width from the arch-shaped portion toward the second mounting component.
5 more elements
Dependencies are inferred from the claim text.