Resources Contact Us Home
Hydraulic control system for automatic transmission

Image Number 5 for United States Patent #5674154.

A hydraulic control system for an automatic transmission to establish a predetermined stage by applying a first frictional engagement element and releasing a second frictional engagement element, comprising: a first hydraulic servo for actuating the first frictional engagement element; a second hydraulic servo for actuating the second frictional engagement element; change-over means for switching the feed of an oil pressure to the first hydraulic servo; signal pressure generating means for generating a signal pressure; and a pressure regulator valve for regulating the pressure to be fed to the second hydraulic servo. The pressure regulator valve includes: a first valve member having a first pressure receiving area to be fed with the signal pressure in one direction; a second valve member arranged coaxially with the first valve member and adapted to come into abutment against the first valve member in the other direction, the second valve member having a second pressure receiving area to be fed with the oil pressure to the first hydraulic servo in the other direction, when the oil pressure is fed by the change-over means; and bias means so disposed at the side of the second valve member axially opposed to the first valve member as to bias the second valve member into abutment against the first valve member.

  Recently Added Patents
Modular system having expandable form factor
Expression of dirigent gene EG261 and its orthologs and paralogs enhances pathogen resistance in plants
Method of reducing acetaldehyde in polyesters, and polyesters therefrom
Output circuit
System and method for access of user accounts on remote servers
Toy ball
  Randomly Featured Patents
Benzopyrone compounds, preparation method and use thereof
Advertising article with automatically activated flasher or sound module
1,2-Alkanediol derivatives in cosmetic compositions as an excipient therefor
Leaned and swept fan outlet guide vanes
Thin film transistors
Plasma jet torch having converging anode and gas vortex in its nozzle for arc constriction
Universal electrical plug adapter
Structure for brake on roller skates
Videoconferencing tracking camera
Self-retaining fastener