Patent ID: 7798788

Claim:
A system of rings for fixing a vacuum pump to a wall of a structure the body of the pump having an end capable of being clamped by the system of rings, said system of rings including bolt holes adapted to cooperate with headed bolts for fastening the vacuum pump to the structure with the system of rings pressed against the wall, characterized in that the system of rings comprises: a lower ring and an upper ring cooperating to clamp the end of the pump body between the upper ring and the lower ring, the upper ring including a contact face that is intended to come into contact with the wall of the structure and an annular face perpendicular to the contact face and adapted to be installed parallel to and in contact with a face of the end of the pump body said annular face having at least one cavity formed therein, said cavity being separate from the bolt holes, and at least one flexible material stud inserted into each said cavity.