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. 07, 1984
Filed:
Nov. 19, 1981
Applicant:
Inventor:
Charles W Schaeffer, Lebanon, PA (US);
Assignee:
Bethlehem Steel Corporation, Bethlehem, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ; B21D / ;
U.S. Cl.
CPC ...
72328 ; 72326 ; 72333 ; 72339 ; 72427 ;
Abstract
Apparatus and method for making a transition plate for a mine roof truss from a strip of metal includes a die set having a first and second station. In the first station the strip of metal is bent downwardly at its sides, a notch is sheared in both sides of the strip and two holes are pierced through the strip. In the second station the transition plate is completed by bending the leading portion of the strip into an 'M' shaped saddle portion, the strip is sheared transversely and bent downwardly at its trailing end.