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. 15, 1987
Filed:
Feb. 06, 1986
Applicant:
Inventor:
Steven L Jantzen, Jerseyville, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04C / ;
U.S. Cl.
CPC ...
238 94 ; 5222 / ;
Abstract
In a prestressed concrete cross tie, a layer of steel reinforcements are located at or near the neutral axis of the cross tie section to minimize fatigue stress fluctuations. Deviation from the neutral axis is not great enough to cause stress fluctuations to exceed the endurance limit of the material. Because fatigue failure of prestressed concrete members is principally associated with reinforcement failure, increased fatigue life of the cross tie is achieved.