HIGH-VACUUM PUMP

摘要

A high-vacuum pump (11) comprises a plurality of pumping stages, each comprising a plurality of mutually cooperating elements, including at least one rotating rotor element (1;13;33) and one stationary stator element. At least one of the elements of at least one of the pumping stages is made of a plastic material reinforced with short fibres, dispersed in chaotic and substantially random manner inside the matrix of plastic material. Use of a plastic material reinforced with short fibres allows making the at least one element by injection moulding and allows manufacturing the vacuum pump (11) with considerably reduced production costs if compared to the conventional vacuum pumps.