Login| Sign Up| Help| Contact|

Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5020655
Kind Code:
B1
Abstract:
1286728 Variable-speed gearing SUNSTRAND CORP 22 July 1970 [13 Aug 1969] 35627/70 Heading F2D In a constant speed drive for an aircraft alternator, comprising a planetary differential 17 controlled by an hydrostatic transmission 24, 56, the drive and control are contained within a single housing and the pressure of the lubrication and control fluid sump 106 in the housing is maintained adequate for the scavenger pump 105 by air entrained fluid directed to the sump by a Venturi injector 120. Pressure fluid from a charge pump 81 is directed to the hydrostatic transmission and a charge relief valve 92. Excess pressure opens the valve and the fluid is directed to the Venturi injector 120, air being entrained in the injector from a differential pressure valve subjected on one side to atmospheric pressure and on the other side to the sump pressure. The transmission is controlled by a servo 80 subjected to charge pump pressure and output-driven governor pressure 78. The differential gear comprises meshing planets 29, 30 on an input carrier 26, planets 29 meshing an output ring gear 40, and planets 30 meshing a control ring gear 51 geared to the fixed displacement unit 24 of the transmission, the variable unit 56 of which is input-driven.

Application Number:
JP7048370A
Publication Date:
July 16, 1975
Filing Date:
August 13, 1970
Export Citation:
Click for automatic bibliography generation   Help
International Classes:
F04B49/00; B64D41/00; F04F5/54; F16H61/4078; F16H61/46; F16H61/47; (IPC1-7): F16H39/44; F04B49/00; F04F5/04; F15B1/00



 
Previous Patent: JPS5020654

Next Patent: JPS5020656