Stabilus Gmbh

Symyx Technologies, Inc.

Institut Fur Mikrotechnik Mainz Gmbh

Tracoe Medical Gmbh

Frank Doffing

Rolf Mintgen

Marian Bochen

H Sam Bergh

Daniel Meron Pinkas

Ralf Schnell

Thomas Reif

Rainer Gransee

Klaus-Stefan Drese

Friedhelm Schoenfeld

Frithjof Von Germar

Michael Klaus

Christiane Krempel

Jean-Michel Mehietang

A system for opening and closing a motor vehicle, the flap is swivalably mounted along one of its edge areas at a stationary structural component part about a horizontal swiveling axis. A first drive device and a second drive device act in parallel to more like flap from a closed position into an open position. The first drive device is a non-self-locking drive device, and the second drive device comprises a cylinder filled with a fluid under pressure. An interior of the second drive device is divided by a piston into a first work chamber and a second work chamber, wherein a piston rod of the piston is guided outward through the first work chamber. A valve arrangement in the piston closes a flow connection between the first work chamber and the second work chamber in a stationary operating state of the flap.

System for opening and closing a flap

A novel gas injection valve for injecting discrete charges of gas into a mobile phase or carrier stream is provided. Injection valves of the invention comprise a plurality of microvalves capable of receiving gas at different pressures and emitting discrete charges of gas at approximately the same pressure. The invention further provides for parallel injection valve arrays capable of injecting multiple samples substantially simultaneously and a method of injecting discrete gas samples at a controlled pressure to a high-resolution gas chromatograph.

Injection valve array

Growing community of inventors

Kastellaun, Germany

Frank Doffing