IP Library Granted Patent US 7,095,381
Granted Patent B2
US 7,095,381 · App. 11/034,911 · Granted Aug 22, 2006

Antenna coil

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Quick Facts
Patent No.
US 7,095,381
App. No.
11/034,911
Granted
Aug 22, 2006
Kind
B2
Abstract

An antenna coil includes a bar-shaped core, a bobbin, a coil, a case, and a wiring harness. The bobbin is formed of insulating material and has the coil wound around the bobbin with the bar-shaped core within the bobbin. The case is formed of insulating material defining a cavity having a cavity interior wall. The bobbin with the coil wound therearound is disposed in the cavity. The case has a protrusion extending into the cavity. The wiring harness is connected to the coil and disposed around a portion of a perimeter of the protrusion in a substantially omega shape and is disposed at least in part between the protrusion and the cavity interior wall. A flexible resin fills spaces in the cavity between the bobbin and the cavity interior wall.

Claims (9)

1. An antenna coil comprising:

a bar-shaped core;

a bobbin formed of insulating material and having opposing first and second ends, opposing longitudinal sides extending between said first and second ends and defining a side opening of a recess therebetween, said opposing longitudinal sides defining a winding accepting groove, and said bar-shaped core being disposed in said recess;

a coil wound around said bobbin and said bar-shaped core within said winding accepting groove;

a case formed of insulating material defining a cavity having a cavity interior wall, said bobbin with said coil wound therearound being disposed in said cavity;

a tuning condenser connected to said coil and situated proximate said first end;

said case having a protrusion extending into said cavity;

a wiring harness connected to said tuning condenser and extending exterior of said case, said wiring harness being disposed around a portion of a perimeter of said protrusion in a substantially omega shape, said wiring harness being disposed at least in part between said protrusion and said cavity interior wall; and

a flexible resin filing spaces in said cavity between said bobbin and said cavity interior wall.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 2, 2017
From: TOKO, INC.
To: MURATA MANUFACTURING CO., LTD.
Reel/Frame 043164/0038 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 19, 2016
From: ALPHA CO., LTD.; TOKO CO., LTD.
To: TOKO, INC.
Reel/Frame 040668/0091 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 12, 2005
From: KIMURA, SATORU; SATO, JUNICHI; UCHIDA, HIDEHITO
To: TOKO CO., LTD.; ALPHA CO., LTD.
Reel/Frame 018173/0187 →