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:
Mar. 16, 1999
Filed:
May. 13, 1997
Ishida Co., Ltd., Kyoto, JP;
Abstract
An elongated web of bag-making material (S) is bent into a tubular form by a former (2), transported along a path (A), is filled with articles (W) and sealed by a transverse sealer (10) transversely to its direction of motion. A pair of seal jaws (20) supported by rotary arms (12) are rotated in mutually opposite directions by a power-communicating mechanism (P) which includes a trajectory-forming mechanism (H) such that the seal jaws (20) will each travel on a generally D-shaped trajectory with a linear section along the path (A) of the bag-making material (S). Cramming devices (50) are adjustably attached to the rotary arms (12) and stroke the tubularly shaped bag-making material (S) from both sides in forward-backward direction (X) without substantially closing the bag being formed such that the articles (W) can be more efficiently crammed with empty spaces among them effectively reduced. Stripping rods (42) are attached to the seal jaws (20) for stripping down the articles being dropped into the bag immediately before the transverse sealing and after the cramming by the cramming devices (50) so as to prevent them from becoming caught between the seal jaws (20).