Dual drive for hydraulic pump and air boost compressor
AssigneeThe Boeing Company
InventorsHoward Carter III, Richard N. Johnson, Michael John Provost, John David Brown
Life of this patent
Estimating the term…
Abstract
A dual drive system for a hydraulic pump and an air boost compressor is provided. Reversible power is transmitted to a shaft connected to clockwise and counterclockwise over-running clutches connected to different vehicle or equipment subsystems. Reversing the drive allows power to be alternately transmitted to one or the other of the subsystems. The invention includes utilizing the dual drive for hydraulic and air conditioning systems for an aircraft, with the provision of an additional drive motor providing constant power to one or more of the subsystems.
Claims34
A dual drive system for providing power to two subsystems, the dual drive system comprising:
- a reversible drive power source, having a main shaft with a longitudinal main shaft axis, a first end, and a second end;
- a first over-running clutch assembly having a first output shaft, a first output speed, and having a free-wheeling rotational direction, the first over-running clutch assembly being connected to and driven by the first end of the main shaft;
- a second over-running clutch assembly having a second output shaft, a second output speed, and an opposite free-wheeling rotational direction, the second over-running clutch assembly being connected to and driven by the second end of the main shaft;
- a first subsystem, connected to and driven by the first output shaft;
- and
- a second subsystem, connected to and driven by the second output shaft.
A dual drive system for providing power to two subsystems, the dual drive system comprising:
- a drive power source, having a main shaft with a longitudinal main shaft axis, a first end, and a second end;
- a first clutch assembly having a first output shaft, and a first output speed, the first clutch assembly being connected to and driven by the first end of the main shaft;
- a second clutch assembly having a second output shaft, and a second output speed, the second clutch assembly being connected to and driven by the second end of the main shaft;
- a controller connected to and arranged to engage and disengage the first clutch assembly, and connected to and arranged to engage and disengage second clutch assembly;
- a first subsystem, connected to and driven by the first output shaft;
- and;
- a second subsystem, connected to and driven by the second output shaft.
A dual drive system for providing power to two subsystems, the dual drive system comprising:
- a drive power source, having a main shaft with a longitudinal main shaft axis, a first end, and a second end;
- a hydraulic pump subsystem connected to and driven by the first end of the main shaft, the hydraulic pump subsystem including a hydraulic pump and a pump power reducing system for unloading the hydraulic pump;
- an air compressor subsystem connected to and driven by the second end of the main shaft, the air compressor subsystem including an air compressor and an air compressor power reducing system for unloading the air compressor;
- and
- a controller connected to the pump power reducing system and connected to the air compressor power reducing system.
A dual drive system for providing power to two aircraft subsystems, the dual drive system comprising:
- a reversible drive power source incorporated in an aircraft, having a main shaft with a longitudinal main shaft axis, a first end, and a second end;
- a first over-running clutch assembly having a first output shaft, a first output speed, and having a free-wheeling rotational direction, the first over-running clutch assembly being connected to and driven by the first end of the main shaft;
- a second over-running clutch assembly having a second output shaft, a second output speed, and an opposite free-wheeling rotational direction, the second over-running clutch assembly being connected to and driven by the second end of the main shaft;
- a hydraulic pump, connected to and driven by the first output shaft;
- and
- an air compressor connected to and driven by the second output shaft.
A method for providing power to two subsystems, comprising:
- providing a reversible drive power source capable of outputting rotational power;
- outputting rotational power from the reversible drive power source through a main power shaft, operating at a rotational speed;
- engaging the main power shaft with and driving a first subsystem when the main power shaft rotates in a first direction, and disengaging from the first subsystem when the main power shaft rotates in an opposite direction;
- engaging the main power shaft with and driving a second subsystem when the main power shaft rotates in the opposite direction;
- and disengaging the second subsystem when the main power shaft rotates in the first direction.
Dependencies are inferred from the claim text.