Accession Number : ADD015140

Title :   Single Screw Mechanism with Gaterotor Housing at Intermediate Pressure.

Descriptive Note : Patent, Filed 31 May 89, patented 28 May 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Winyard, David C

Report Date : 28 May 1991

Pagination or Media Count : 11

Abstract : This patent discloses an invention that is an improvement upon conventional single-screw mechanisms in that the gaterotor housing is substantially isolated from both the inlet and outlet port areas by a window opening path through the casing whereby the gaterotor teeth pass for engagement with the mainrotor. The window path has been extended and has close clearances provided on both sides of the entering gaterotor teeth creating two barriers to internal leakage thereby reducing window path losses, increasing volumetric efficiency and allowing higher pressure capability.

Descriptors :   BARRIERS, CLEARANCES, EFFICIENCY, HOUSING(DWELLINGS), INTERNAL, LOSSES, OPENING(PROCESS), PATENTS, PATHS, PRESSURE, TEETH, VOLUME, WINDOWS

Subject Categories : Hydraulic and Pneumatic Equipment
      Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE