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:
Oct. 20, 1992
Filed:
Oct. 02, 1990
Wolfgang Hohenauer, Kufstein, AT;
Schwarzkopf Technologies Corporation, New York, NY (US);
Abstract
The invention relates to enhancing the thermal emissivity of metal X-ray tube anodes by means of applying an oxide coating to the anode. The oxide coating layer is formed of a mixture of zirconium oxide, titanium oxide, aluminum oxide and/or calcium oxide, with silicon oxide added from about 1-20% by weight of said oxide coating layer. Preferably, the coating includes from about 4-7% by weight of silicon oxide. The oxide coating layer is then applied to the anode pursuant to a standard method such as plasma spraying. The oxide coating, as formulated, displays improved layering characteristics over prior formulations while retaining good thermal emissivity and adhesive properties. Moreover, the formulation according to the invention enables an improved application to the anode of such oxides or oxide compounds over previous formulations, without negatively affecting the layer adhesion or thermal emission coefficient properties of the coating. Small quantities of other stabilizing oxide compounds may additionally be added to the oxide coating layer.