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:
Nov. 24, 2015
Filed:
Jun. 01, 2011
Kelun Zhao, Shezhen, CN;
Fengping Shen, Shenzhen, CN;
Bingbing Wan, Shenzhen, CN;
Yanzhao Zhou, Shenzhen, CN;
Kelun Zhao, Shezhen, CN;
Fengping Shen, Shenzhen, CN;
Bingbing Wan, Shenzhen, CN;
Yanzhao Zhou, Shenzhen, CN;
SHENZHEN TATFOOK NETWORK TECHNOLOGY CO., LTD., Shenzhen, Guangdong Province, CN;
Abstract
A method for manufacturing a resonant tube is provided in the present invention, which comprises: mechanically mixing 88-98 wt. % of iron-nickel alloy powder, 1-8 wt. % of carbonyl iron powder, and 1-8 wt. % of carbonyl nickel powder to form a uniform powder mixture; molding the uniform powder mixture to form a resonant tube blank; and continuously sintering and annealing the resonant tube blank. Also provided in the present invention are a resonant tube and a cavity filter. The method for manufacturing a resonant tube provided in the present invention significantly enhances production efficiency while greatly reducing consumption of raw materials. Moreover, the resonant tube provided in the present invention reduces, to the greatest extent, segregation of alloy components and coarse and uneven microstructures, thereby increasing the performance and stability of the corresponding products.