Hydraulic shock absorber

Claim 2

In a hydraulic shock absorber in which damping fluid is displaced from a flexible impact-receiving container through a fluid passage into a storage chamber for said damping fluid having a sepaRating piston for separating damping fluid entering said storage chamber from a compressible gas within said storage chamber, the improvement comprising a flow control means disposed in said fluid passage and movable with said separating piston for progressively reducing the rate of passage of damping fluid into said storage chamber as said piston is moved by said damping fluid into said storage chamber whereby a substantially constant damping effect results in the course of said impact-receiving container receiving an impact.

Claim 3

The shock absorber according to claim 1 characterized in that the flexible container is an unstretchable tube, carrying alone or in common with other flexible containers a rigid bumper plate.

Claim 4

The shock absorber according to claim 2 characterized in that the flexible container is connected by a feed line suitably dimensioned in cross-section with a storage container separately mounted on the motor vehicle.

Claim 5

The shock absorber according to claim 2 characterized in that the flexible container is securely clamped to the storage chamber by clamping means.

Claim 6

The shock absorber according to claim 4 characterized in that the clamping means has a ring flange for connection with a motor vehicle and a form holder for supporting the flexible container after deformation.

Claim 7

The shock absorber according to claim 1 characterized in that the flexible container is an unstretchable tube forming the bumper of a motor vehicle.

Claim 8

The shock absorber according to claim 6 characterized in that the flexible impact-receiving container has curved ends arranged to be impact repelling to the side surfaces of the motor vehicle.

Claim 9

The shock absorber according to claim 6 characterized in that the tube is fitted over its entire length to the form of a support plate of the motor vehicle and is carried by this plate.

Claim 10

The shock absorber according to claim 1 characterized in that the control means is a tube effecting fluid communication between the flexible container and the storage chamber by means of a plurality of spaced apertures longitudinally arranged along the length of the tube.

Claim 11

The shock absorber according to claim 1 characterized in that the storage chamber is accommodated in a tubular support element of a motor vehicle.

Claim 12

In a hydraulic shock absorber in which damping fluid is displaced from a flexible impact-receiving container through a fluid passage into a storage chamber for said damping fluid having a separating piston for separating damping fluid entering said storage chamber from a compressible gas within said storage chamber, the improvement comprising a flow control means comprising a round bar having a flattening of its peripheral surface constantly becoming greater from its point to the base fastened to the separating piston disposed in said fluid passage and movable with said separating piston for progressively reducing the rate of passage of damping fluid into said storage chamber as said piston is moved by said damping fluid into said storage chamber whereby a substantially constant damping effect results in the course of said impact receiving container receiving an impact.

Claim 13

In a hydraulic shock absorber in which damping fluid is displaced from a flexible impact-receiving container through a fluid passage into a storage chamber for said damping fluid having a separating piston for separating damping fluid entering said storage chamber from a compressible gas within said storage chamber, the improvement comprising a flow control means comprising a round bar having a flattening of its peripheral surface constantly becoming greater from its point to the base fastened to the separating piston disposed in said fluid passage and movable with said separating piston for progressively reducing the rate of passage of damping fluid into said storage chamber as said piston is moved by said damping fluid into said storage chamber whereby a substantially constant damping effect results in the course of said impact receiving container receiving an impact.