Heat fixing roller having powder metal gudgeon
Patent 5094613 Issued on March 10, 1992. Estimated Expiration Date: 
April 9, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 9, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3620690 Sintered austenitic-ferritic chromium-nickel steel alloy Coupling for end gudgeon and internally heated roller Apparatus for supplying a liquid to a heated surface Patent #: 4536076 InventorsApplicationNo. 506316 filed on 04/09/1990US Classes:432/60, Internally heated roll219/216, Printing or reproduction device399/330, Heated roller419/2, Making porous product428/566, Interconnected void structure (e.g., permeable, etc.)464/184GUDGEONSExaminersPrimary: Moses, R. L.Attorney, Agent or FirmForeign Patent References
International ClassesF27B 009/28F16C 035/08 G03G 015/20 AbstractA fixing mechanism is provided including a heated roller. The heated roller includes a core made of a high thermally conductive metallic material, and a gudgeon for supporting such a core. The gudgeon is made from powder metal stainless steel material that has an interconnected porosity of 20%.Other References
Field of SearchGUDGEONSNonmetal Printing or reproduction device With means whereby material to be heated may be passed continuously through heated area (e.g., conveyor) Internally heated roll Base metal one or more of Iron group, Copper(Cu), or Noble metal Interconnected void structure (e.g., permeable, etc.) Making porous product Sintering which includes a chemical reaction Heat and pressure simultaneously to effect sintering | |
