Fluid-pressure and analogous brake systems – Multiple systems – Fluid pressure and electric
Patent
1993-06-24
1994-08-30
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Multiple systems
Fluid pressure and electric
303 20, 303 241, 303 15, 303 93, 188112A, B60T 1374
Patent
active
053421175
ABSTRACT:
A brake pulsing apparatus for use in vehicles having vacuum hydraulic, pneumatic or electric brake systems. The brake pulsing apparatus includes a solenoid valve, for vacuum hydraulic and pneumatic brake systems, or a relay, for electric brake systems, mounted in a vacuum, pressurized air or electrical line that transmits a brake signal to a brake assembly of the vehicle when the brake system is engaged, a pendulum and proximity switch that sense deceleration of the vehicle, and a timer relay connected between the proximity switch and the solenoid valve or relay to repetitively close the valve or open contacts of the relay when the brake system is engaged. The pendulum and timer relay are adjustable to adapt the brake pulsing apparatus to the type of vehicle in which the apparatus is used. In vacuum hydraulic or pneumatic systems, the solenoid valve repetitively admits air into the vacuum line or exhausts air from the pressurized air line during vehicle braking and a cup, having an orifice through its closed end, can be mounted in a port of the valve to admit or exhaust air at a controlled rate. A second solenoid valve or relay can be mounted in the brake system of a trailer towed by a tractor and operated by the timer relay to synchronously pulse brakes of the trailer with pulsation of brakes of the tractor.
REFERENCES:
patent: 2184557 (1939-12-01), Lloyd
patent: 2924306 (1960-02-01), Martin
patent: 3617098 (1971-11-01), Lelber
patent: 3698772 (1972-10-01), Nixon
patent: 3726567 (1973-04-01), Burckhardt
patent: 3953084 (1976-04-01), Pittet, Jr. et al.
patent: 3976336 (1976-08-01), Sekiguchi
patent: 4196936 (1980-04-01), Snyder
patent: 4538859 (1985-09-01), Russell
patent: 4726627 (1988-02-01), Frait et al.
Rockwell WABCO Vehicle Control Systems "Anti-Lock Braking Systems for Trucks, Tractors & Buses" Apr. 1992; 8 pages.
U.S. Department of Transportation; DOT HS 807 846 Final Report "An In-Service Evaluation of the Reliability, Maintainability, and Durability of Antilock Braking Systems (ABS) for Heavy Truck Tractors" Mar. 1992, pp. 2-10 through 2-17.
Price Thomas D.
Roberts James C.
McCarthy Bill D.
Oberleitner Robert J.
Watson Louis W.
Young Lee W.
LandOfFree
Brake pulsing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Brake pulsing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brake pulsing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-25792