Molecular drag pump
AssigneeAlcatel
InventorsAndré Bouille, Jean-Francois Guilbert
Life of this patent
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Abstract
A molecular drag pump comprising a rotor housed inside a case having a suction inlet and a delivery outlet, said pump being associated at its inlet with a valve comprising a valve mechanism inside a valve envelope, wherein the valve envelope is integral with said pump case.
Claims6
A molecular drag pump comprising a rotor housed inside a case having a suction inlet and a delivery outlet, said pump being associated at its inlet with a valve comprising a valve mechanism inside a valve envelope, wherein the valve envelope is an integral one piece construction with said pump case.
A molecular drag pump comprising:
- a pump case having a suction inlet, a delivery outlet, and a valve envelope;
- and
- a rotor housed inside said pump case;
- wherein said valve envelope is part of a same casting as said pump case so that said valve envelope and said pump case form an integral one piece construction.
A molecular drag pump comprising:
- a pump case having a suction inlet, a delivery outlet, and a valve envelope;
- and
- a rotor housed inside said pump case;
- wherein said valve envelope and said pump case form a one piece homogeneous structure.
Dependencies are inferred from the claim text.