Patents by Inventor Guruswamy Umasankar

Guruswamy Umasankar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cam modulator for anti-lock braking system apparatus and method
    Patent number: 5071202
    Abstract: An anti-lock braking system system (ABS) pressure modulator is provided. The modulator includes a frame with a central bore fluidly exposed to a solenoid valve and to a vehicle wheel cylinder. A piston is slidably mounted within the central bore having a contact surface and a first predetermined position within the bore. A power device is actuated by a controller. A cam, moved by the power means, has a ramp surface in contact with the piston contact surface. The position of the piston within the wheel cylinder is determined by the position of the cam.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: December 10, 1991
    Assignee: General Motors Corporation
    Inventors: Alroy G. Fabris, Frank G. Pirrallo, Guruswamy Umasankar, Bruce S. Shimanovski, Prakash C. Shrivastava
  • Cam actuated traction control system apparatus and method
    Patent number: 5026126
    Abstract: A traction control system (TC) pressure actuator is provided. The actuator includes a frame with a central bore fluidly exposed to a solenoid valve and to a vehicle wheel cylinder. A piston is slidably mounted within the bore having a contact surface and a first predetermined position within the bore. A power device is actuated by a controller. A cam moved by the power device has a ramp surface in contact with the piston contact surface. The position of the piston within the wheel cylinder is determined by the position of the cam.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: June 25, 1991
    Assignee: General Motors Corporation
    Inventors: Guruswamy Umasankar, Alexander Kade, Alroy G. Fabris