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:
May. 23, 1995
Filed:
Nov. 12, 1993
Applicant:
Inventor:
Berthold Hild, Burbach, DE;
Assignee:
SMS Schloemann-Siemag Aktiengesellschaft, Dusseldorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21J / ; B21B / ;
U.S. Cl.
CPC ...
72407 ; 72184 ; 72206 ; 7245301 ;
Abstract
Hydraulic feed drives for pressing tools of a flying upsetting press are integrated into closed hydraulic circuits and are driven by displacement pumps, with the hydraulic circuits being pressurized in order to improve the flow dynamics, and with internal regulation circuits and superimposed regulations circuits of the individual control components being provided for improving the regulation accuracy.