Plural screw positive displacement machines
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United States of America Patent
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-
Oct 2, 2001
Grant Date -
N/A
app pub date -
Nov 12, 1998
filing date -
May 16, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Helical intermeshing main and gate rotors (1, 2) are mounted for rotation about their axes in respective intersecting bores in a housing. The profiles of the rotors as seen in cross section are generated by the same rack formation. The high pressure flanks of the lobes of the main rotor (1) and of the grooves of the gate rotor (2) are both generated by a preferably cycloidal portion (GHA) of the rack R.
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