We have designed a system that disables a semi-truck’s front-wheel brakes while the tractor is skidding sideward and steered in the direction of skid, allowing the front wheels to roll freely and restore alignment of the tractor with its trajectory. Braking responds to the brake peddle normally when sideward skidding stops or steering ceases to be in the direction of skid.
The system consists of a control module mounted on the steering column and an effector valve in each front-brake hose, these with appropriate wiring. The control module is equipped with a steering-direction sensor, a lateral-acceleration sensor and a relay. The sensors pass current from the brake-light circuit to the relay trigger when inertia and steering are both rightward or when inertia and steering are both leftward. The relay when so triggered passes current from the key-on circuit to both effector valves (left front and right front). The activated valves block their respective brake hoses and deflate respective front-brake chambers.
We welcome inquiries from possible manufacturers at:
Ingrid Regen: ingrid@dimp.com
Sam Regen: bogus_id@comcast.net
Brian Hoffman: brian.hoffman.123@gmail.com
Interested parties should enquire about receiving our 3-d print files shown below. In addition to the printable plastic parts, a module contains four 10-mm cylindrical neodymium magnets oriented in the same direction, one 10-mm spherical neodymium magnet, two 4-mm diameter mercury tilt sensors, two 60-mm-long spirit levels, one 1-inch square (cubic) relay, four 3-inch long 3/32-inch diameter copper-rods curved to a 60-mm diameter arc, two hose clamps, a few dabs of glue.