Screen cleaning system
AssigneeDeere & Company
InventorsJAMES M. HERSHBARGER, Nathan R. Vandike
Life of this patent
Estimating the term…
Abstract
A screen cleaning system cleans debris from a material catching screen surrounded by a frame. A hollow vacuum arm which moves over the screen. The arm has a slot in a side which is adjacent to the screen. The arm includes an inner arm pivotally coupled to a duct and an outer arm which movable with respect to the inner arm. The arm is moved by an actuator mechanism which includes a first pulley coupled to a drive shaft, a second pulley coupled to an end of the arm, a belt drivingly coupling the first pulley to the second pulley. The outer arm is slidably coupled to the inner arm and a spring is biased to urge the outer arm radially inwardly. A track is formed by the frame and a roller rides along the track and is rotatably coupled to an end of the outer arm.
Claims19
A screen cleaning system for cleaning a material catching screen, the cleaning system comprising:
- a hollow arm movable over a surface of the screen, the having an aperture in a first side which is adjacent to the surface of the screen;
- a hollow duct for connecting the arm to a source of vacuum pressure;
- and
- an actuator mechanism for moving the arm so that the aperture draws material off of the screen as the arm moves over the screen.
A screen cleaning system for cleaning a material catching screen surrounded by a frame, the cleaning system comprising:
- a hollow duct for connecting to a source of vacuum pressure;
- a hollow inner arm pivotally coupled to the duct, the inner arm being movable over a surface of the screen, the having an aperture in a first side which is adjacent to the surface of the screen;
- an outer arm which engages the screen and which is coupled to the inner arm;
- an actuator mechanism for moving the arms so that the aperture draws material off of the screen as the arms move over the screen;
- a track is formed by the frame;
- and
- a roller rides along the track and is rotatably coupled to the outer arm.
Dependencies are inferred from the claim text.