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:
Dec. 24, 1996
Filed:
May. 19, 1995
Applicant:
Inventor:
Manfred Haage, Dornstetten, DE;
Assignee:
fischerwerke, Artur Fischer GmbH & Co KG, Waldachtal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ; G01L / ;
U.S. Cl.
CPC ...
411 10 ; 411 14 ; 116212 ; 116D / ;
Abstract
A prestress-monitoring element for screw-type anchors is arranged to be inserted like a washer between a nut and an article to be fixed and includes a pressure ring and an expansion ring. If the nut provided for fixing is tightened, then the resultant axial prestress causes the pressure ring to expand the expansion ring until the nut lies against the expansion ring. In this end position, a prestress required by the construction of the prestress-monitoring element is achieved. The position of the nut on the pressure ring can be monitored visually, as a result of which the prestress can be indirectly monitored.