Patents by Inventor Henrik H. Straub

Henrik H. Straub 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).

  • Adaptive skid detector threshold apparatus
    Patent number: 4068903
    Abstract: A skid detector apparatus utilizing a threshold modulator unit to provide an antiskid valve command signal which is inversely proportional to braking pressure to eliminate wheel lockup in accordance with the existing state of a runway. The threshold level modulator utilizes a feedback control signal to vary the threshold level within the skid detector. The skid detector provides a control signal to the valve driver which in turn varies the brake pressure to the braking device.
    Type: Grant
    Filed: December 8, 1976
    Date of Patent: January 17, 1978
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Henrik H. Straub
  • Fluidic antiskid circuit
    Patent number: 3985398
    Abstract: A pneumatic wheel speed sensor provides pulse frequency signal proportional to wheel speed, the signal is converted to DC signal and differentiated and compared to commanded deceleration, error which causes modulation of brake pressure. Excessive deceleration causes a digital amplifier to switch into the system an integrator resulting in rapid brake pressure signal decrease. A second order lead protects against undesirable landing gear oscillation in aircraft applications.
    Type: Grant
    Filed: April 8, 1975
    Date of Patent: October 12, 1976
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Henrik H. Straub