| 摘要 |
PCT No. PCT/EP96/01031 Sec. 371 Date Apr. 10, 1996 Sec. 102(e) Date Apr. 10, 1996 PCT Filed Mar. 11, 1996 PCT Pub. No. WO96/33339 PCT Pub. Date Oct. 24, 1996A rotary pump having a stator (1) pierced with a housing (11) delimited by a cylindrical sidewall (110). A cylindrical rotor (2) located tangentially inside of the housing (11) off-center to an axis (X). The cylindrical rotor (2) is driven in rotation about the axis (X). A vane which diametrally passes through the rotor (2) has first and second opposite edges (31,32). The first and second opposite edges (31,32) bear against the sidewall (110) and are separated from one another by a distance subjected to variations during rotation of the rotor (2). The vane (3) is made of a thin sheet of material which offers elastic resistance to bending. The thin sheet has an undulation part (33,34) which absorbs such variations in distance experienced by the first and second opposite edges (31,32) of the vane (3).
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