Delivery system

Details Delivery system Delivery system

2006-09-26

2006-09-26

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Turbine regenerative pump

C415S171100

Reexamination Certificate

active

07112035

ABSTRACT:
In known delivery systems, a pump chamber and a revolving impeller in the pump chamber rotating about a pump axis, in which protuberances are provided inside the pump chamber on predetermined end walls, it is disadvantageous that the protuberances very and are complicated to make. In the delivery system of the invention, the friction in the pump chamber is reduced and the efficiency is improved by providing spacers, which space the impeller apart from the end walls of the pump chamber. That the protuberances are disposed in at least one ring around the pump axis.

REFERENCES:
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patent: 4492515 (1985-01-01), Watanabe et al.
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patent: 4854830 (1989-08-01), Kozawa et al.
patent: 5137418 (1992-08-01), Sieghartner
patent: 6210102 (2001-04-01), Yu et al.
patent: 6299406 (2001-10-01), Yu et al.
patent: 6551058 (2003-04-01), Nowack
patent: 42 43 544 (1994-06-01), None
patent: 44 15 566 (1995-11-01), None

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