Patent ID: 8961106
Filing Date: 2015-02-24
Classification: F04D

Abstract:
1. A connector device for use with a turbomolecular pump having a rotor, a casing accommodating the rotor therein, and an intake port and an outlet port formed in the casing, the turbomolecular pump operating to suck gas from the intake port and to expel the gas from the outlet port by rotating the rotor within the casing at high speed, said connector device comprising: a connecting exhaust tube for connecting the intake port of the turbomolecular pump with an outlet port of a vacuum vessel to be pumped; an annular weight disposed around an outer periphery of the connecting exhaust tube; a viscoelastic member interposed between the connecting exhaust tube and the weight, wherein spaces not containing said viscoelastic member are formed between the connecting exhaust tube and the weight, and wherein said viscoelastic member is divided into parts which are spaced apart from each other between the connecting exhaust tube and the weight.