Hitachi Astemo Ltd.

Chrysler Group LLC

Hitachi Automotive Systems Americas, Inc.

Joel Donahue

Edward J Haney

Scott A Bone

Jordan Truitt

James M Stevens

Christopher W Olsen

Takeru Yokota

Koji Minamino

In this shock absorber, a piston includes a first piston body, a second piston body, and a piston band. The first piston body includes a first passage, a second passage, a first seat, and a second seat. The first seat communicates with the first passage and on which a first damping valve is placed. A second damping valve is placed on the second seat. The second piston body includes a third passage, a fourth passage, a third seat, and a fourth seat. The third seat communicates with the fourth passage and on which a third damping valve is placed. A fourth damping valve is placed on the fourth seat.

Shock absorber and manufacturing method of shock absorber

A shock absorber having an elongated pressure tube and a piston slidably mounted in the pressure tube which divides the pressure tube into a first and second working chamber. An elongated piston rod is attached to the piston and moves in unison with the piston in both an extended and a compression direction. Movement of the rod in a compression direction decreases the volume of the first working chamber and increases the volume of the second working chamber, and vice versa. A control orifice and adaptive valve are fluidly connected in series between the first working chamber and a reservoir. A check valve is fluidly connected between the control orifice and the adaptive valve which opens only upon movement of the rod in a compression direction.

Shock absorber

A shock assembly includes a first tube having a cylindrical wall with an inner surface and an outer surface. A second tube is received within the first tube and includes a cylindrical wall having an inner surface and an outer surface. A piston assembly is received within the second tube and includes a piston rod and a piston that is selectively movable relative to the first tube and the second tube. A height-sensing device is disposed within the first tube between the inner surface of the first tube and the outer surface of the second tube.

Ride height sensing shock damper

Growing community of inventors

Novi, MI, United States of America

Joel Donahue