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. 14, 2004
Filed:
Jun. 26, 2002
Jiri Karbula, Riehen, CH;
Endress + Hauser Flowtec AG, Reinach, CH;
Abstract
With the E-I or E-E transformer, signals which are independent of each other are to be transferable simultaneously, without the signals interfering with each other. The E-I transformer has an E core (e, E′), which has two outer legs (ES , ES ) and an inner leg (EM), and a yoke ( ) which combines with the E core to form a double closed magnetic circuit. A first coil and a second coil are wound around the inner leg (EM), and a third coil and a fourth coil are wound around one (ES ) of the outer legs. The E-E transformer has a first E core (E , E ′) and an identical second E core (E , E ′); each E core has two outer legs (ES , ES , ES ′, ES ′; ES , ES , ES ′, ES ′) and an inner leg (EM , EM ′; EM , EM ′); the E cores together form a double closed magnetic circuit and two outer links (ST , ST ′, ST , ST ′) as well as an inner link (STM, STM′). A first coil and a second coil are wound around the inner link, and a third coil and a fourth coil are wound around the outer link ST , ST ′). The coils on each leg or link may be wound side by side or one above another. The coils on the inner leg or link and those on the outer leg or link form part of different AC power transmission paths.