Patent ID: 6604516
Filing Date: 2003-08-12
Classification: F02D,F02M,F16K

Abstract:
In a flap valve for controlling a gas stream, having a valve tube (13) carrying the gas stream and having a valve flap (14), disposed in the valve tube (13) and pivotable between an open position and a closing position, which valve flap is seated in a manner fixed against relative rotation on an adjustable flap shaft (15) and covers an inside valve tube cross section in the valve tube (13) in the closing position and maximally uncovers it in the open position, the improvement wherein the flap shaft (15) is oriented in such a way that its axis (17) forms an acute angle (&agr;) with the axis (18) of the valve tube (13), and that the valve flap (14) is secured to the flap shaft (15) in such a way that in its closing position, its surface normal (16) extends at an acute angle (&bgr;) to the axis (18) of the valve tube (13).