Patent ID: 6280167
Filing Date: 2001-08-28
Classification: F04C

Abstract:
A gear pump (11) including first and second housing parts (19, 20), a gear wheel (14) with teeth on an outside circumference and a gear ring (15) with teeth on an inside surface, the gear ring is guided in a circular-cylindrical recess (18) of a housing part (19) and together with the gear wheel (14) rotates about their own axis (24, 25) which are offset from one another, an intake opening (31) and a crescent-shaped pressure opening (32) in a first side wall (26), defining the recess (18), of the first housing part (19), and a countersunk feature (38), opposite and in fluid communication with the pressure opening (32), in a second wall (28) of the second housing part (20) that defines the recess (18) on another side, and the countersunk feature is embodied as a hollow cone (38).