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:
Feb. 01, 1983
Filed:
Jul. 07, 1981
Friedhelm Mundus, Lengerich of Westphalia, DE;
Windmoller & Holscher, Lengerich of Westphalia, DE;
Abstract
In welding apparatus for web material, one of a pair of feed rollers for the web is reciprocatable by a crank shaft. A swing arm oscillated by the crank shaft oscillates a gear segment for intermittently driving the feed rollers. A clutch and brake unit for uncoupling and braking the feed rollers and vice versa is operated by a cam rotating with the crank shaft. The crank shaft is operatively connected to a disc which is provided with an eccentric slide block and turns at the same speed as the crank shaft. The slide block is longitudinally displaceable in a slot of the swing arm. The driving motion for the feed rollers occurs during rotation of the slide block by way of the sector remote from the pivot shaft of the swing arm.