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Kroetsch

Dave Kroetsch, Kitchener CA

Patent application numberDescriptionPublished
20100084513METHOD AND SYSTEM FOR DIRECTING UNMANNED VEHICLES - A method of remotely controlling an aerial vehicle within an environment, including providing a control station in communication with the aerial vehicle, providing a map of the environment, receiving target world coordinates for the aerial vehicle within the environment, determining a desired velocity vector to direct the aerial vehicle to the target world coordinates at a speed proportional to the distance between the aerial vehicle and the target world coordinates, and directing the aerial vehicle along the desired velocity vector until the aerial vehicle reaches the target world coordinates.04-08-2010

David Kroetsch, Kitchener CA

Patent application numberDescriptionPublished
20090283629HOVERING AERIAL VEHICLE WITH REMOVABLE ROTOR ARM ASSEMBLIES - The invention provides a hovering aerial vehicle with removable rotor arms and protective shrouds. Removing the shrouds reduces the weight of the vehicle and increases flight time. Removing the rotor arms makes the vehicle easier to transport. Removable rotor arms also simplify field repair or replacement of damaged parts.11-19-2009

Karl P. Kroetsch, Williamsville, NY US

Patent application numberDescriptionPublished
20100083501Continuous manufacturing process for metal-plastic hybrid heat exchanger - The invention is a method for producing a heat exchanger assembly including the steps of extruding a plastic and an adhesive from a co-extrusion die into a plurality of tubes spaced from each other with each tube having an adhesive disposed on its exterior surface. A plurality of corrugated air fins are serially fed into the co-extrusion die and spaced from each other by a predetermined space and ejected between adjacent tubes with the corrugations extending transversely between the tubes. The adhesive is then cured to secure the tubes to the air fins. The method proceeds by cutting the tubes at each predetermined space with a guillotine shear to produce a plurality of unified heat exchanger cores. The ends of the tubes of each core are inserted into tube slots in manifolds, and the tubes and manifolds are adhesively secured together to define a heat exchanger assembly.04-08-2010

Karl Paul Kroetsch, Williamsville, NY US

Patent application numberDescriptionPublished
20100031507Method for manifold manufacture and assembly - A manifold assembly for a heat exchanger is manufactured and assembled by separately molding a tank portion and a header portion, and assembling the tank and header portions together by positioning them relative to each other and injecting a sealing substance in a cavity that is formed when the portions are so positioned. Ribs are incorporated in the tank and header portions to increase the interface area between the molded portions and the sealing substance, to achieve a mechanically sound, leak proof assembly without using gaskets or fasteners.02-11-2010

Patent applications by Karl Paul Kroetsch, Williamsville, NY US