Gwehenberger

Jurgen Gwehenberger, Wangs CH

Patent application number	Description	Published
20090107396	Vacuum chamber on a frame basis for coating installations - The present invention relates to a vacuum chamber and to its production. According to the invention, the vacuum chamber comprises a frame into which insert plates are placed. The insert plates form together with the frame a closed space in which a vacuum can be created. Preferably, the shell of the frame is extracted from an integrally formed metal piece, with a large portion of material being removed, leading to openings for the insert plates to be created. This has among others the advantage that no welding seams are necessary where the individual plates are inserted.	04-30-2009

Patent application number	Description	Published
20110281026	CLEANING METHOD FOR COATING SYSTEMS - The present invention relates to a pretreatment method to be applied to secondary surfaces in coating systems prior to coating. To this end, a non-stick coating is applied to the secondary surfaces, which can be easily detached from the secondary surfaces, even after coating material has been deposited thereon. In this way, the cleaning process of the coating system after the coating process is considerably simplified.	11-17-2011

Patent application number	Description	Published
20110162359	DEVICE FOR SEALING A BEARING HOUSING OF AN EXHAUST-GAS TURBOCHARGER - The device serves for sealing a bearing housing of an exhaust-gas turbocharger, from which a rotor is led into a chamber of the turbocharger subjected to a mass flow. The device includes a sealing ring arranged in a groove of the rotor, a seat, arranged on the bearing housing and on which a pre-stressed sealing ring is secured by an outward-facing circumferential surface, and a radially extending separation gap, which leads annularly around the axis of rotation of the rotor and is defined by two superimposed sliding surfaces, the first of which is arranged on a first face of the sealing ring and the second of which is arranged on a first flank of the groove. In order to reduce a heat input into the sealing ring caused by lapping of the sealing ring during operation of the exhaust-gas turbocharger, a depression annularly around the axis is formed into the second flank of the groove. The depression is defined radially outwards by an annular body formed into the rotor. The annular body forms a portion of an external face of the rotor. The annular body includes a radially oriented annular edge, which adjoins the external face and which serves to reduce the size of a lapping face, which is produced as the sealing ring strikes against the second groove flank.	07-07-2011