The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2012
Filed:
Sep. 04, 2007
Tor-arne Gronland, Sollentuna, SE;
Pelle Ransten, Storvreta, SE;
Hakan Johansson, Uppsala, SE;
Johan Bejhed, Uppsala, SE;
Tor-Arne Gronland, Sollentuna, SE;
Pelle Ransten, Storvreta, SE;
Hakan Johansson, Uppsala, SE;
Johan Bejhed, Uppsala, SE;
NanoSpace AB, Uppsala, SE;
Abstract
A nozzle arrangement for use in a gas thruster is presented. At least one heater micro structure () is arranged in a stagnation chamber () of the gas thruster. The heater microstructure () comprises a core of silicon or a silicon compound coated by a surface metal or metal compound coating. The heater microstructure () is manufactured in silicon or a silicon compound and covered by a surface metal coating. The heater microstructure () is mounted in the stagnation chamber () before or after the coverage of the surface metal or metal compound coating. The coverage is performed by heating the heater microstructure and flowing a gas comprising low quantities of a metal compound. The compound decomposes at the heated heater microstructure (), forming the surface metal or metal compound coating. The same principles of coating can be used for repairing the heater microstructure () in situ. The driving gas comprises preferably a compound exhibiting an exothermic reaction when coming into contact with a catalytically active material. If the gas is exposed to heater microstructures being covered with the catalytically active material, the gas is further heated by the catalytic reaction.