GB392202A - Hydraulic shock absorbing system for vehicles - Google Patents

Abstract

392,202. Preventing lateral tilting of vehicles; hydraulic shock-absorbers. DEUTSCH, F. A., 27, Rankestrasse, Berlin. Nov. 12, 1931, No. 31357. Convention date, Nov. 12, 1930. [Classes 108 (ii) and 108 (iii).] One-way fluid shock - absorbers on opposite sides of a vehicle are interconnected in such a way that they function normally as long as the frame and axle move parallel to one another, but any tendency to depart from parallelism results in one shock-absorber rendering the other one double acting. In the construction shown in Fig. 1, each shock-absorber comprises an oscillating vane 5 connected to the axle, movable in a cylinder 1 carried by the frame of the vehicle, the two working chambers a, b being connected by a passage 3 having a one-way valve 4. The passage 3 may be closed by a slidable valve 6 which is normally kept clear of the passage by a light spring and only closes it under the influence of a fluid under pressure supplied from the compression chamber a of the apparatus on the other side of the vehicle through a pipe 8. Simple up and down movements of the frame result in equal movements of the vanes 5, downward movements being free while the rebound is checked by the closing of the valves 4. If, however, one side of the frame tends to rise, the pressure thereby exerted in the compression chamber a of the apparatus on the rising side operates the valve 6 of the apparatus on the falling side and thereby closes the passage 3 on that side so as to check the falling movement. In a modification the valve b is arranged to move axially of the spindle carrying the vane 5. In the construction shown in Fig. 4, the vane is provided with a movable slide 14 pressed outwards by a light spring. The underside of the slide 14 communicates with the compression chamber through a passage 13 and one-way valve 12, this passage 13 being closed at times by the axially slidable valve 6. When the vane moves in an anticlockwise direction, the vacuum formed behind it lifts the valve 12 and draws the slide 14 away from the wall of the cylinder thus allowing free movement. Movement of the vane in a clockwise direction is strongly resisted. The valves 6 are operated to close the passage 13 as required by pipe connections to the apparatus on the opposite side of the vehicle. In a modification shown in Fig. 5 each shock-absorber is of the reciprocating piston type and functions in a simllar manner, the flow of liquid taking place through an intermediate chamber. A further modification is shown in which two oscillating vanes and two abutments are provided, opposite chambers being connected by passages in the operating spindle, while the passage of liquid takes place through an intermediate chamber. The pipe connections between shock-absorbers on opposite sides may be replaced by mechanical or electrical connections.