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:
Jul. 06, 1993
Filed:
Aug. 02, 1991
Toshiichi Murakoshi, Neyagawa, JP;
Hiroshi Kawazoe, Hirakata, JP;
Toshihiro Takahata, Mino, JP;
Masataka Tokunaga, Katano, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A coil element is made by the steps of winding a coil wire around a plurality of guide portions arranged at a product pitch to form a plurality of coil portions while the coil wire is set in a development state, and rolling a bobbin on and along the coil wire to wind the coil wire around a side peripheral portion of the bobbin to manufacture the coil element. An apparatus for manufacturing the coil element includes a plurality of guide portions arranged adjustably between a winding operation pitch and a predetermined product pitch, a coil portion forming device for winding a coil wire around the guide portions when the guide portions are adjusted to the winding operation pitch to form a plurality of coil portions while the coil wire is set in a development state, a switch device for changing the pitch of the guide portions between the winding operation pitch and the predetermined product pitch, and a rolling device for rolling a bobbin on and along the coil wire to wind the coil wire around a side peripheral portion of the bobbin to manufacture the coil element.