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US 2003/0146403 A1Published application
Flap valve
AssigneeRobert Bosch GmbH
InventorsErwin Krimmer, Ralph Krause, Peter Baur, Christian Lorenz, Klaus Kaiser
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AssigneeRobert Bosch GmbH
InventorsErwin Krimmer, Ralph Krause, Peter Baur, Christian Lorenz, Klaus Kaiser
Estimating the term…
In a flap valve for controlling a gas flow, with a valve tube (11) that carries the gas flow and with a valve flap (14) that is pivotable in the valve tube (11) and that in its closing position rests sealingly with its outer contour on the inner wall of a flexible thin-walled tube (20) disposed coaxially in the valve tube (11), and with a valve shaft (15) connected to the valve flap (14) in a manner fixed against relative rotation, it is provided, in order to attain a sensitive adjustment of the valve flap (14) and for the sake of technologically simple, inexpensive production of the flap valve (14), that the valve shaft (15) is positioned at an acute angle (γ) relative to the valve plane, and the thin-walled tube (20) is formed directly and integrally onto the valve tube (11).
A flap valve for controlling a gas flow, having a valve tube (11) carrying the gas flow and having a valve flap (14), which is disposed in the valve tube (11) and is pivotable between a closing and opening position and is seated in a manner fixed against relative rotation on a rotatable valve shaft (15) and covers an inside cross section of the valve tube (1) in its closing position and maximally opens this inside cross section in the opening position of the valve tube, characterized in that the valve shaft (15) is positioned at an acute angle (γ) relative to the valve plane, and a thin-walled tube (20), integrated with the valve tube (11), that elastically surrounds the valve flap (14) peripherally in its closing position is formed onto the valve tube (11) directly and integrally.
Dependencies are inferred from the claim text.