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:
Jun. 22, 1976
Filed:
Jun. 30, 1975
Applicant:
Inventor:
Peter Auer, Ottobrunn, DT;
Assignee:
Dyckerhoff & Widmann Aktiengesellschaft, Munich, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
29452 ; 81 5 / ; 81 5738 ; 81 5722 ;
Abstract
In a device for simultaneously stressing a group of tension elements in a prestressed concrete member, a common driving source is used for mechanically rotating each of the spindles and wrench sleeves which are connectible to the tension elements. Separate safety clutches are selectively engageable with each of the spindles and wrench sleeves so that individual connection of each spindle to a tension element can be provided and, as the element is stressed in tension, individual adjustment can be provided by the wrench sleeve for each anchor nut on its associated tension element.