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1. (US4553705) Toroidal core winding method and apparatus

Office : United States of America
Application Number: 06584438 Application Date: 16.02.1984
Publication Number: 4553705 Publication Date: 19.11.1985
Grant Number: 4553705 Grant Date: 19.11.1985
Publication Kind : A
Prior PCT appl.: Application Number:JP82000235 ; Publication Number: Click to see the data
IPC:
B65H 81/02
H01F 41/08
H01F 41/06
G11B 5/20
G11B 5/42
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
H
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
81
Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
02
Covering or wrapping annular or like cores forming a closed or substantially-closed figure
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41
Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass
02
for manufacturing cores, coils or magnets
04
for manufacturing coils
06
Winding
08
Winding conductors on to or threading conductors through cores or formers which are closed in themselves, e.g. toroids
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
F
MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41
Apparatus or processes specially adapted for manufacturing or assembling the devices covered by this subclass
02
for manufacturing cores, coils or magnets
04
for manufacturing coils
06
Winding
(Deprecated)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
12
Structures of inductive heads
20
Construction or disposition of windings
(Deprecated)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
42
Apparatus or processes specially adapted for the manufacture of heads, e.g. assembly
CPC:
H01F 41/08
Applicants: Matsushita Electric Industrial Co., Ltd.
Inventors: Uchida Yoshihisa
Yamashita Kazuichi
Agents: Wenderoth, Lind & Ponack
Priority Data: JP8200235 18.06.1982 WO
Title: (EN) Toroidal core winding method and apparatus
Abstract: front page image
(EN)

The present invention provides a wire winding method and apparatus in which for winding wire on a toroidal core having a hole therethrough, one end of the wire is inserted through the toroidal core from one side thereof, the wire protruding from the toroidal core is drawn out and this drawn out wire is wound on the core, and, then, with a tension applied, the tip of the wire is again inserted through the toroidal core, which operation is repeated. The tip of the wire gripped by a drawing out member is cut between the drawing out member and a gripping member before inserting the end of the wire through the aforementioned toroidal core, the cut being made such that the distance between the gripping position and the tip of the cut wire is a predetermined value, so that the length of wire from the tip to the gripping member is always the same when the wire is inserted through the hole in the core.


Also published as:
EP0113783WO/1984/000077