Positive-displacement machine having orbital motion

Details Positive-displacement machine having orbital motion Positive-displacement machine having orbital motion

1994-03-24

1994-12-06

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

418 613, F04B 1700

Patent

active

053705084

ABSTRACT:
The machine includes a piston which is cylindrical in the mathematical sense, which has an axis .DELTA..sub.p, which is rotary, and which is situated in a cylindrical casing that has an axis .DELTA..sub.c, the piston having an outline that has .DELTA..sub.p axes of symmetry, the casing delimiting a hollow volume whose cross-section in a plane perpendicular to its axis .DELTA..sub.c has S.sub.c axes of symmetry, S.sub.p and S.sub.c differing from each other by unity. The axes .DELTA..sub.p and .DELTA..sub.c are parallel and are separated by a distance E, the piston and the casing delimiting at least three chambers between them, and the casing including at least one suction inlet and one delivery outlet. The positive-displacement machine further includes a ferromagnetic sprocket which has an axis .DELTA..sub.p, which is secured to the piston, which has N.sub.p teeth, and which is disposed inside a ferromagnetic toothed ring which has an axis .DELTA..sub.c and which is secured to the casing, the toothed ring being provided with N.sub.B electrical windings disposed radially, wherein the ratio N.sub.p /N.sub.B is equal to the ratio S.sub.p /S.sub.c, and wherein the N.sub.B electrical windings of the toothed ring are powered successively.

REFERENCES:
patent: 2561890 (1951-07-01), Stoddard
patent: 2703370 (1955-03-01), Steensen
patent: 2965039 (1960-12-01), Morita
patent: 4233003 (1980-11-01), Jeng
patent: 4639202 (1987-01-01), Mahanay et al.
patent: 5145329 (1992-09-01), Zumbusch et al.
Japanese Patent Abstract JP 2169889 dated Jun. 29, 1990.

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