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:
Jul. 24, 1979
Filed:
Oct. 31, 1977
Fred Schalch, Le Landeron, CH;
Fael S.A., Saint-Blaise, CH;
Abstract
A transport device for use with an electrical resistance welding machine producing longitudinal seams at workpiece bodies or the like which, prior to reaching the welding rolls of the machine, are transported at a desired welding speed by means of the transport device. The transport device comprises at least one endless chain revolving above the workpiece bodies to be transported and having workpiece body-engaging members in the form of pawls hingedly connected in spaced relationship with the endless chain. Each pawl has oppositely extending pawl arms, of which one arm possesses a contact or impact surface intended to bear against the end of a workpiece body engaged thereby and the other arm possesses a control surface which bears against a guide rail stationarily arranged above the lower chain run of the endless chain which revolves over at least two sprocket wheels. The guide rail is constructed at both ends of a linear section thereof so as to have two sections extending in an arc-shaped or curved configuration at the region of the sprocket wheels in such a manner that upon arrival of a pawl in a workpiece feed plane the pawl arm having the contact surface is pivoted in a controlled manner into its workpiece-engagement position and upon departure of the pawl out of the feed plane the contact surface of such pawl arm retains its essentially vertical position with regard to the direction of transport of the workpiece body.