Patent ID: 7695258

Claim:
A hydraulic device comprising: a housing having a central opening, an inlet port, and an outlet port, the housing at least partially defining a pressurizable brake chamber connected with the inlet port; an output shaft received in the central opening and extending from the housing, wherein the output shaft includes a fluid passage in communication with the pressurizable brake chamber; a rotor assembly comprising a stator and a rotor having cooperating teeth defining fluid pockets, the rotor rotating and orbiting relative to the stator when hydraulic fluid is directed toward the fluid pockets, the fluid pockets being in communication with the inlet port and the outlet port; a wobble shaft connected to the rotor and to the output shaft to rotate the output shaft upon rotational and orbital movement of the rotor; and a brake assembly including first brake disks connected to the output shaft, second brake disks connected to the housing, a piston contacting at least one of the brake disks and a biasing member urging the piston to an operating condition braking the output shaft, wherein the inlet port connects to the brake chamber to supply pressurized fluid to the brake chamber through the fluid passage in the output shaft urging the piston away from the brake chamber.