F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
F04C 2/324 (2006.01)
Patent
CA 2552498
A rotary, positive displacement pump for fluids, having a pair of diametrically opposed vanes secured to a rotor in equally spaced, similarly contoured pockets, for movement between an extended position with a portion of the vane extending outwardly beyond the cylindrical surface of the rotor and a retracted position wherein the vane is seated entirely within its corresponding pocket. Each vane is formed of a top curved portion and a bottom curved portion, these portions meeting along a longitudinally extending line. The top portion extends from a pivot to the line and is curved so that when the vane is in retracted position it sits in a peripheral depression extending longitudinally along the rotor surface, the outer surface of this top portion of the vane conforming to the cylindrical surface of the rotor. The bottom portion is curved along a radius from that pivot, so that this lower portion is seated in and fills its corresponding pocket when the vane is in retracted position. The pump construction according to the present invention permits the use of smaller rotors and relatively larger vanes.
1564330 Ontario Inc.
Ridout & Maybee Llp
LandOfFree
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