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:
Sep. 27, 1983
Filed:
Oct. 09, 1981
Joel A Hamilton, Demarest, NJ (US);
Other;
Abstract
This invention includes apparatus providing for continuous motion and constant velocity to a traveling web usually including at least one film. A pair of grippers are arranged to grasp the film and are alternately actuated to advance the web. Each of the grippers are carried on the distal end of a reciprocated member. A motor is connected to a first shaft to turn four sprockets carried thereon. Each sprocket engages a roller chain assembly arranged in an endless manner and disposed to be moved in an oblong path. The roller chains are moved in a reciprocable path by one of a pair of crank arms driving and moving Pitman arms connected thereto. The oblong roller chains are operatively connected to and move lever arms pivotally connected to drag links which in turn move the reciprocated members. The apparatus includes a crank arm, a Pitman arm, drag links and reciprocable member with each as an assembly moved one hundred eighty degrees out-of-phase with a like assembly. The reciprocable movement of the frame carrying the oblong roller chains lengthens the forward stroke and shortens the rearward stroke while the speed of the roller chain remains constant. An overlap of the gripper actuation is provided by reciprocably moving the frame carrying the roller chain while moving the roller chain at a constant speed.