192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1975-07-23
1976-11-30
Wyche, Benjamin W.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 8713, 744115, 188265, B60K 2902
Patent
active
039943747
ABSTRACT:
An emergency braking system for a vehicle having a transmission of the type having a plurality of selectively pressurized control ports for operating respective clutches for engaging the drive gears in predetermined combinations to provide respective driving ratios. An auxiliary pump of the positive displacement type is driven by one of the vehicle wheels to produce a source of emergency pressure fluid which is available as long as the vehicle is in motion. Emergency valve means are provided for connecting the output of the auxiliary pump simultaneously to a plurality of the control ports on the transmission which tends to connect the gears in contradictory combinations thereby to block the transmission against rotation to provide emergency braking for the vehicle wheels which are connected to the transmission. The auxiliary pump is bridged by pairs of check valves connected face-to-face and back-to-back so that pressurized fluid is available at the output regardless of whether the vehicle is moving forwardly or backing up. The emergency valve means is in the form of an override valve having a set of normal inlet ports connected to the respective control lines and outlet ports connected to the respective control ports of the transmission. The override valve has an emergency inlet port and a plunger responsive thereto which acts to connect the emergency inlet port overridingly to the control ports of the transmission when pressurized fluid is applied from the auxiliary pump.
REFERENCES:
patent: 2929478 (1960-03-01), Tuck et al.
patent: 3038574 (1962-06-01), Roche
patent: 3163270 (1964-12-01), Zingsheim
patent: 3651904 (1972-03-01), Snog et al.
Westinghouse Air Brake Company
Wyche Benjamin W.
LandOfFree
Last resort emergency braking system for heavy vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Last resort emergency braking system for heavy vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Last resort emergency braking system for heavy vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1049296