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. 29, 1997
Filed:
Mar. 14, 1996
Takafumi Kawano, Tokushima, JP;
Michio Ueda, Tokushima, JP;
Shikoku Kakoki Co., Ltd., Itano-gun, JP;
Abstract
A sealing device for a packaging material tube has a pair of pressure arms 13 supported by a lift frame 11 each at a lower portion thereof and pivotally movable about respective parallel horizontal axes. A pair of sealing jaws 14 are fixed to the respective pressure arms 13 each at an upper portion of the arm so as to be opposed to each other. A high-frequency heating coil 18 is provided on one of the sealing jaws 14 for induction-heating an aluminum foil layer of the tube T present between the sealing jaws 14 as closed. A transmission-side primary coil 21 is fixedly disposed at one side of the path of vertical movement of the lift frame 11. A receiving-side secondary coil 22 is so disposed as to form a closed electric circuit along with the heating coil 18. The primary coil 21 and the secondary coil 22 are electromagnetically connected when the sealing jaws 14 are closed, and are electromagnetically separated when the jaws 14 are opened.