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:
Sep. 22, 1987
Filed:
Dec. 13, 1985
Applicant:
Inventor:
Gero Herrmann, Karlsfeld, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04C / ; E04C / ;
U.S. Cl.
CPC ...
5222 / ; 52230 ;
Abstract
A closed ring-shaped reinforcing member for use in a concrete structure and which is stressed by annular tensile forces, such as a bell-shaped anchoring body for a prestressing member used in a prestressing concrete structure, is provided around the radially outer surface with a coating of a material which is elastically or plastically deformable under compression. The reinforcing member can deform under the action of annular tensile forces which cause it to stretch, but the presence of the deformable coating on its outside surface prevents the transfer of such deforming forces to the concrete structure, since otherwise such forces could result in the formation of cracks in the structure.