Leakage Path Interconnection for Single Screw Mechanisms.
Patent, Filed 21 Dec 88, patented 17 Jul 90,
DEPARTMENT OF THE NAVY WASHINGTON DC
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The teeth of a gaterotor in a single screw mechanism has flanks in contact with the mainrotor thread which are relieved only on diagonally opposite sides above and below the gaterotor sealing plane at the leading inner and trailing outer tooth edges. When properly arranged in a mechanism capable of having multiple teeth engaged in single screw thread, the blowhole leakage paths at the mainrotor thread crest-gaterotor tooth root-housing interface are interconnected between opposite chambers which are at equal pressure. This eliminates blowhole leakage and removes the primary limitation on gaterotor thickness and strength. Patents. jhd
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