Gm Global Technolgoy Operations, Inc.

Wolfgang Markard

Rainer Pechtold

Dimitri A Podorashi

Hans Weidner

Walter Bleuel

A pressure regulator for a hydrogen storage system, wherein the pressure regulator is adapted to operate at temperatures below &#x2212;50&#xb0; C., while minimizing the need for separate sealing elements and O-rings. The pressure regulator includes a main body including an inner cavity bounded by an interior wall, a piston disposed in the inner cavity, the piston including a first channel disposed adjacent a first portion, wherein the first portion is adapted to cooperate with the interior wall to form a seal between the piston and the interior wall, a first biasing device disposed in the first channel, wherein the first biasing device is adapted to exert a force on the first portion of the piston to form a seal between the first portion and the interior wall, and an end cap coupled to the main body thereby enclosing the piston to form an outlet pressure chamber.

Pressure regulator for hydrogen storage system

A locking device for locking an adjustable steering column in an adjusted position including a lateral clamping element having enlarged heads at opposite ends thereof and a piston and a cylinder between the enlarged heads and a rotatable locking rod for locking or unlocking the steering column arranged axially immovable relative to the steering column and compactly in a space that is little used. The piston and cylinder have overlapping bores parallel to the centerline of the steering column. The locking rod, also parallel to the centerline of the steering column, has an oval-shaped portion protruding through the overlapping bores so that when the long axis of the oval-shaped portion is vertical the clamping element is loose and the steering column is vertically and horizontally adjustable and when the long axis of the oval-shaped portion is horizontal the clamping element is tight and the steering column is vertically and horizontally locked.

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Florsheim, Germany

Wolfgang Markard