F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
103/17
F04D 1/00 (2006.01) F04C 2/02 (2006.01)
Patent
CA 1108010
ABSTRACT OF THE DISCLOSURE Scroll apparatus for pumping liquids wherein recessed liquid transfer passage means are provided in the end plates of the scroll members. The transfer passage means may be inner passages within the scroll involutes, outer passages outside the scroll involutes or a combination of inner and outer passages. These passages are located and configured to be opened substan- tially immediately after the orbiting involute wrap has reached that point in its orbiting cycle to define three essentially completely sealed-off liquid zones. These passages remain open at least until the liquid passages between the wraps are suffi- ciently large to prevent any substantial pressure pulsations within the scroll liquid pump. The scroll liquid pumps may be operated to pump liquid radially inward or outward.
303438
Little (arthur D.) Inc.
Swabey Ogilvy Renault
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