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:
Dec. 28, 1999
Filed:
Jul. 30, 1998
Johann Natterer, Legau, DE;
Multivac Sepp Haggenmuller GmbH & Co., Wolfertschwenden, DE;
Abstract
The invention provides a lifting device for a working station of a packaging machine, the working station comprising a first tool member and a second tool member mounted for movement relative to the first tool member. The lifting device comprises a first lifting member for producing a first closing travel of the second tool member towards the first tool member and a second lifting member for producing a second closing travel following said first closing travel. The second lifting member comprises drive means and mechanical transmission means having means for producing substantially constant closing force for the second closing travel upon occurrence of a resistance. The mechanical transmission means preferably comprises rollers mounted between three planes, whereby the lifting movement for the second closing travel is produced by moving the first plane from a first position into a second position by means of the drive means, thereby displacing the rollers between the second and the third plane such that the distance between the second and third plane is enlarged.