IP Library › Granted Patent US 7,238,888
Granted Patent B2
US 7,238,888 · App. 10/964,345 · Granted Jul 3, 2007

Wire for coil

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Quick Facts
Patent No.
US 7,238,888
App. No.
10/964,345
Granted
Jul 3, 2007
Kind
B2
Abstract

In a coil wire having a square sectional shape, arc-shaped chamfers are provided at four corners in the section of the square. The sectional area of the coil wire having the chamfers is set to at least 1.15 times as large as that of a circle having a diameter which is the same as the length of one side of the square.

Claims (10)

1. A wire for use in a coil, said wire having a square sectional shape,

wherein chamfers are provided at four corners in the section of the square, and sectional area of said wire having the chamfers is at least 1.15 times as large as that of a circle having a diameter which is the same as the length of one side of said square.

2. A coil wire according to claim 1 , wherein arc-shaped chamfers are provided at four corners in the section of the square, and length of the radius of an arc of said arc-shaped chamfer is set so that the sectional area of said wire having said chamfers is at least 1.15 times as large as that of a circle having a diameter which is the same as the length of one side of said square.

3. A wire for use in a coil, said wire having a square sectional shape,

wherein chamfers are provided at four corners in the section of the square, and overall length of an outer circumference of the section of said wire having said chamfers is at least 1.09 times as long as circumference of a circle having a diameter which is the same as the length of one side of said square.

4. A coil wire according to claim 3 , wherein arc-shaped chamfers are provided at four corners in the section of the square, and length of the radius of an arc of said arc-shaped chamfer is set so that overall length of an outer circumference of the section of said wire having said chamfers is at least 1.09 times as long as circumference of a circle having a diameter which is the same as the length of one side of said square.

5. A coil wire according to claims 1 , wherein length of one side of said square is 1 mm or less.

6. A coil wire according to claims 2 , wherein length of one side of said square is 1 mm or less.

7. A coil wire according to claims 3 , wherein length of one side of said square is 1 mm or less.

8. A coil wire according to claims 4 , wherein length of one side of said square is 1 mm or less.

Assignments (2)
LICENSE Recorded Mar 25, 2014
From: GOTO DENSHI CO., LTD.
To: GOTO CALIFORNIA, INC.
Reel/Frame 032521/0574 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 13, 2004
From: GOTO, YOSHIHIDE; OONUMA, KATUYOSI; MOROOKA, KENJI; SATO, HIROTAKA; OSHIKIRI, TADASHI; GOTO, TAIKI
To: GOTO DENSHI CO., LTD.
Reel/Frame 016482/0993 →