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Fluid Drive (Patent No: 845451)

Inventor: Fitzgerald, Phyllis M.

Location: Calgary

Comments: N/A

Description: The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A rotary fluid engine comprising a housing having a plurality of chambers, a separator ring located centrally therein to define said plurality of housing chambers, a plurality of rotors disposed in the interior of said housing chambers to define a plurality of operating chambers within each housing chamber, said rotors being mechanically connected through a common cylindrical hub, said hub being rotatably supported on an eccentric journal of a centrally located crankshaft supported by said housing, said eccentric journal being an integral part of said crankshaft and capable of being driven, said housing and said rotors having respectively internal cross-sectional profiles and external cross-sectional profiles determined on the basis of single lobed epitrochoidal curves, said housing having inlet and outlet fluid passages alternatingly opening to said housing chambers and opening to the surface of said housing in the form of ports, said fluid passages being disposed in operative relation to said housing chambers and said rotors.

2. A rotary fluid engine as claimed in claim 1, wherein said housing has firstly, a chamber the internal cross-sectional profile determined on -the basis of a single lobed epitrochoidal curve, and secondly a chamber the internal cross-sectional profile determined on the basis of a single lobed epitrochoidal curve, said second profile curve being rotated pi radians about its ordinate axis with respect to the first said internal cross-sectional profile.

3. A rotary fluid engine as claimed in claim 1, wherein said rotors are oriented on said cylindrical hub such that their respective transverse axes are fixed at an angular interval of one half pi radians.

4. A rotary fluid engine as claimed in claim 1, wherein said separator ring provides fluid passage to alternate fluid passages in said housing by a plurality of external recesses on said separator ring.

5. A rotary fluid engine as claimed in claim 1, wherein said crankshaft is supported by separate parts of said housing releasably connected together.

6. A rotary fluid engine as claimed in claim 1, wherein said fluid passages and said ports in said housing are positioned in operative relation to said housing chambers such that the inlet passage is open to the said operating chambers when said chambers are at minimum volume and remains open until said chambers reach maximum volume.

7. A rotary fluid engine as claimed in claim 1, wherein said fluid passages and said ports in said housing are positioned in operative relation to said housing chambers such that the outlet passage is open to the said operating chambers when said chambers are at maximum volume and remains open until said chambers reach minimum volume.

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