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US 9,429,233 B1Granted
Brake clutch for an automatic transmission
AssigneeZF Friedrichshafen AG
InventorsOdilo Raphael Nawratil, James Frederick Vorberger, II, Won Hyuk Lee
Life of this patent
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Abstract
A brake clutch for an automatic transmission includes a piston that is positioned adjacent a multi-disc clutch pack and is movable between an engaged configuration and a disengaged configuration relative to the multi-disc clutch pack. Teeth of a plurality of ratcheting teeth of the piston are meshed with teeth of a plurality of ratcheting teeth of a retaining assembly of the brake clutch. A related automatic transmission is also provided.
Claims20
An automatic transmission, comprising:
- a transmission housing defining a slot;
- a plurality of planetary gear sets disposed within the transmission housing;
- a plurality of shifting elements disposed within the transmission housing, the plurality of shifting elements including a brake clutch comprising
- a multi-disk clutch pack;
- a piston positioned adjacent the multi-disc clutch pack and movable between an engaged configuration and a disengaged configuration relative to the multi-disc clutch pack, the piston defining a plurality of ratcheting teeth;
- a retaining assembly received within the slot of the transmission housing, the retaining assembly defining a plurality of ratcheting teeth, the retaining assembly mounted to the piston such that teeth of the plurality of ratcheting teeth of the piston mesh with teeth of the plurality of ratcheting teeth of the retaining assembly.
3 more elements
A brake clutch for an automatic transmission, comprising:
- a multi-disk clutch pack;
- a piston positioned adjacent the multi-disc clutch pack and movable between an engaged configuration and a disengaged configuration relative to the multi-disc clutch pack, the piston defining a plurality of ratcheting teeth;
- a retaining assembly positioned on and extending about the piston, the retaining assembly defining a plurality of ratcheting teeth, teeth of the plurality of ratcheting teeth of the piston meshed with teeth of the plurality of ratcheting teeth of the retaining assembly.
Dependencies are inferred from the claim text.