Accession Number : ADD014636

Title :   Leakage Path Interconnection for Single Screw Mechanisms.

Descriptive Note : Patent, Filed 21 Dec 88, patented 17 Jul 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Winyard, David C

Report Date : 17 Jul 1990

Pagination or Media Count : 9

Abstract : 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)

Descriptors :   *PATENTS, *SCREW THREADS, *ROTARY SEALS, CIRCUIT INTERCONNECTIONS, LIMITATIONS, PATHS, LEAKAGE(FLUID), PRESSURE, TEETH, THICKNESS

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE