Patent ID: 8740589
Filing Date: 2014-06-03
Classification: F04C,F16L

Abstract:
1. A vacuum pump or a vane cell pump, the pump comprising: a pump housing defining a suction chamber and having a pump housing opening which opens into said suction chamber; and a suction check valve configuration disposed in said pump housing opening, said valve configuration opening to an outside or into an external vacuum chamber and having a suction check valve housed in a pot-shaped valve housing comprising a housing jacket, one of said suction check valve configuration and said pump housing opening having an undercut or circumferential groove provided on an outer side of said housing jacket or on an inner side of said pump housing opening, one of said suction check valve configuration and said pump housing opening also having a latching hook comprising a latching finger having a latch, wherein said latching finger can be radially pivoted with respect to said housing jacket and said latch engages in said circumferential groove in response to axially directed insertion of said suction check valve configuration into said pump housing opening to lock said suction check valve configuration in said pump housing opening, wherein said latching hook is disposed, structured and dimensioned in such a manner that said latch is compression loaded when said suction check valve configuration is subjected to an axial load which urges said suction check valve out of said pump housing opening.