Abstract: In a vibration damper of a turbomolecular vacuum pump, a vacuum tightness function and a vibration damping function are both performed by one ore more toroidal rings made of an elastic material. The elastic rings assume a resting configuration while the vacuum pump is not operating and the damper is at atmospheric pressure, and they assume a compressed configuration while the vacuum pump is operating and the damper is under vacuum conditions. In the compressed configuration, the elastic rings are deformed due to a compression force. This deformation of the elastic rings prevents metal-to-metal contact between the vacuum pump and a vacuum chamber to which the pump is connected through the damper.

Abstract: In a vibration damper of a turbomolecular vacuum pump, a vacuum tightness function and a vibration damping function are both performed by one or more toroidal rings made of an elastic material. The elastic rings assume a resting configuration while the vacuum pump is not operating and the damper is at atmospheric pressure, and they assume a compressed configuration while the vacuum pump is operating and the damper is under vacuum conditions. In the compressed configuration, the elastic rings are deformed due to a compression force. This deformation of the elastic rings prevents metal-to-metal contact between the vacuum pump and a vacuum chamber to which the pump is connected through the damper.

Abstract: In a vibration damper of a turbomolecular vacuum pump, a vacuum tightness function and a vibration damping function are both performed by one ore more toroidal rings made of an elastic material. The elastic rings assume a resting configuration while the vacuum pump is not operating and the damper is at atmospheric pressure, and they assume a compressed configuration while the vacuum pump is operating and the damper is under vacuum conditions. In the compressed configuration, the elastic rings are deformed due to a compression force. This deformation of the elastic rings prevents metal-to-metal contact between the vacuum pump and a vacuum chamber to which the pump is connected through the damper.

Abstract: The present invention relates to a support (1) for rolling bearings, which advantageously finds application, among others, in the technical field of rotary vacuum pumps, such as turbomolecular vacuum pumps. According to the invention, the support for rolling bearings (1) comprises a first inner annular shell (3) made of metal and intended to be mounted on the outer surface of a rolling bearing, a second outer annular shell (5) made of metal, concentric with said first inner annular shell and external thereto and intended to be mounted on the surface of the bearing seat, and an intermediate elastomeric member (7) provided between said inner and outer shells and fixed thereto.

Abstract: A support for a rolling bearing of the kind equipped with an outer rotating ring for a rotary vacuum pump, the support comprising an inner portion that can be associated with the rotating ring, a fastening outer portion and a connecting portion, interposed between the inner and outer portions, wherein the connecting portion is a frusto-conical resilient element.

Abstract: In a vibration damper of a turbomolecular vacuum pump, a vacuum tightness function and a vibration damping function are both performed by one or more toroidal rings made of an elastic material. The elastic rings assume a resting configuration while the vacuum pump is not operating and the damper is at atmospheric pressure, and they assume a compressed configuration while the vacuum pump is operating and the damper is under vacuum conditions. In the compressed configuration, the elastic rings are deformed due to a compression force. This deformation of the elastic rings prevents metal-to-metal contact between the vacuum pump and a vacuum chamber to which the pump is connected through the damper.

Abstract: A support for a rolling bearing of the kind equipped with an outer rotating ring for a rotary vacuum pump, the support comprising an inner portion that can be associated with the rotating ring, a fastening outer portion and a connecting portion, interposed between the inner and outer portions, wherein the connecting portion is a frusto-conical resilient element.

Abstract: The device includes a fixed extension body member including an auxiliary electrical outlet plate at one end thereof adapted to be supported over a standard double electrical wall outlet, and an articulated arm member pivotally connected to the upper end of the fixed extension body member with a standard electrical plug receptacle at the outer end of the arm member. Electrical conductors are carried by the arm member and the body member for connecting the plug receptacle to the wall outlet with which the auxiliary electrical outlet plate is associated.