Gear control system for vibration attenuation
AssigneeParker-Hannifin Corporation
InventorsJohn W. Burrell, John Loeffler, Brian L. Rang
Life of this patent
Estimating the term…
Abstract
A power take off unit includes an input gear, an output gear, and an intermediary gear that cooperate to transfer power from a rotational power source to an operating target. The power take off unit has a control module that biases the intermediary gear relative to the input gear and the output gear to reduce gear rattle vibrations associated with intermeshed tooth looseness.
Claims8
A power take off (PTO) unit that is adapted to be rotationally driven by a primary drive component and to rotationally drive an auxiliary device, the PTO unit comprising:
- a housing that is configured to be attached to a primary drive component;
- a first gear that is supported on the housing and includes a portion that extends from the housing and is adapted to be rotationally driven about a first rotational centerline by the primary drive component;
- a second gear that is supported on the housing so as to be rotationally driven about a second rotational centerline by the first gear, the second gear adapted to rotationally drive an auxiliary device;
- and
- a biasing mechanism that is configured to displace one of the first and the second rotational centerlines relative to the other of the first and second rotational centerlines such that a positional relationship between the first gear and the second gear is changed to attenuate gear rattle when the power take off unit is operated.
A power take off (PTO) unit for attenuating gear vibrations comprising:
- a housing that is configured to accept power input from a primary drive component and produce an output sufficient to drive an auxiliary device;
- a first gear that is supported on the housing and includes a portion that extends from the housing and is adapted to be rotatably driven by the primary drive component;
- a second gear that is supported on the housing such that the first gear is intermeshed to the second gear;
- and
- a biasing mechanism that is configured to apply a biasing force against one of displace the first gear and relative to the second gear so as to attenuate gear rattle when the power take off unit is operated such that a positional relationship between the first and second gears is changed.
Dependencies are inferred from the claim text.