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:
Aug. 09, 1977
Filed:
Jun. 18, 1976
Edward F O'Brien, Northhampton, MA (US);
Package Machinery Company, East Longmeadow, MA (US);
Abstract
A mechanism for forming heat seals or the like in adjacent layers of web material as part of a package making process carried out by a machine comprises two sealing jaws and a means for slidably supporting and driving the two jaws for movement between relatively opened and closed positions. One jaw is fixed to a slide slidably supported for movement relative to a base along a given slide axis and the other jaw is slidably supported on the slide for slidable movement along the same slide axis. A crank mechanism simultaneously moves both the slide and the other jaw to drive the two jaws in opposite directions toward their open or closed condition, depending on the direction of rotation of the crank. In the jaw closing direction the crank mechanism has a toggle action making available a high clamping force between the jaws and causing the jaws to close smoothly with little or no bouncing or impact.