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:
Oct. 27, 1981
Filed:
Jun. 22, 1979
Alois Weller, Erkrath, DE;
Wolfgang Mai, Kaarst, DE;
Kieserling & Albrecht, Solingen, DE;
Abstract
In an improved crank press arrangement including a sled which is reciprocally mounted on the frame of the arrangement. A toggle lever is pivotably mounted on the sled. One arm of the toggle lever has a cam-follower roller whereas the other arm coacts with an ejector arm slidably mounted in the sled. A crank drive reciprocates the sled. A control cam is in contact with the cam-follower. The ejector rod coacts with a blank and a die to form a workpiece. The crank drive and control arm are operatively connected by means of a gear train. The contour and shape of the control cam is such that while the cam-follower roller is in continuous contact therewith, nevertheless a temporary standstill of the ejector rod occurs during the operative cycle of the arrangement.