Patent ID: 9528515
Filing Date: 2016-12-27
CPC Classification: F04C

Claim Text:
1. A gear pump, comprising: a pump housing; meshing gears enclosed by the pump housing, the meshing gears each having a toothing, the meshing gears configured to pump a pumping medium in a conveying direction through the pump housing; and bearing journals arranged on longitudinal axes, each bearing journal projecting laterally away from one of the gears, wherein at least one of the bearing journals has, at least over a part of an axial extension, a bearing journal diameter (D a toothing width b is at least twice as large as distance a between the longitudinal axes of the gears, the toothing width b being an extension of the gears in a direction parallel to the longitudinal axes, a suction side of the pump housing includes a transition region with a wall that, in the conveying direction, transitions from a circular intake cross-section to a pump inlet on an upper toothing plane, a cross-section of the pump inlet in the upper toothing plane is substantially square, wherein the transition region has an extension H in the conveying direction of the pumping medium, wherein the extension H is defined as follows: where α is a maximum opening angle of the wall in the transition region and is defined as a maximum angle between the conveying direction of the pumping medium and a connecting line between a starting point (A) of the wall to an end point (B) of the wall.