Fichtel & Sachs Ag

Henning Rittstieg

Gunther Handke

Rolf Wengenroth

Klaus Beyfuss

Hartmut Rolleke

Carlos Prudente

Hydraulic, adjustable shock absorber with a working cylinder and a piston which is fastened to a piston rod and divides the working cylinder into two working chambers, with an equalization chamber located in a jacket tube surrounding the working cylinder, which equalization chamber is connected by means of at least one controllable valve and a bypass channel running inside the jacket tube to one of the working chambers, whereby at least one valve is connected to the shock absorber by means of an opening of a collar of the jacket tube, characterized by the fact that located inside the collar is a pipe socket of the valve which is connected to the collar by means of a seam.

Hydraulic adjustable shock absorber for a motor vehicle

Self-pumping air suspension spring for a motor vehicle, comprising a roller bellows, which form a spring chamber, a spring carrier which consists of a cylinder and a piston rod (which piston rod can move axially in the cylinder, whereby the roller bellows are functionally connected to the cylinder and the piston rod), a vestibule with at least one connection to the spring chamber and at least one connection to the air reservoir, which can be of any appropriate type. In the event of a movement of the piston rod, there is a pumping action via the vestibule in connection with at least one non-return valve in the spring chamber, whereby the vestibule is located inside the spring chamber enclosed by the roller bellows and the cylinder. At least one of the components of the air suspension spring executing the pumping action is formed by the piston rod. It is appropriate if the cylinder is used in conjunction with a vibration damper which is part of an air suspension spring.

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Yilla Hills, KY, United States of America

Henning Rittstieg