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:
Aug. 29, 2000
Filed:
Feb. 02, 1999
Ari Haapakoski, Paavola, FI;
ADC Solitra Oy, Oulu, FI;
Abstract
The invention relates to a filter, a method of manufacturing a filter and a component of a filter shell construction. The filter involved is particularly a multi-circuit filter comprising a plurality of resonance circuits and a conductive shell construction (21) comprising a wall construction (22, 22a, 22b) having walls, and a first and second end which close the shell construction providing the shell construction with a section construction defined by the wall construction and the ends, the section construction comprising one or more sections. The filter also comprises resonance circuit resonators in the section construction of the shell construction (2) in one or more sections (11 to 14) thereof. The filter further comprises coupling adjusting elements for adjusting the couplings between the different resonance circuits of the filter. In accordance with the invention, the resonators, at least in the areas on the side of the end, and the coupling adjusting elements are constructions provided at the end from the material of the end by impact extrusion.