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:
Feb. 03, 1987
Filed:
Jul. 05, 1985
Applicant:
Inventor:
Frank Ludwig, Richmond, MI (US);
Assignees:
P.T.E. Inc., Richmond, MI (US);
American Energy Services, Inc., Richmond, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 12 ; 73 82 ; 173119 ;
Abstract
An apparatus for testing the strength of the sidewalls of hollow tubular members such as for example metal utility poles is disclosed. The present invention provides a self-contained mechanically actuated testing device which is operable to subject a pole to be tested to a concentrated impact force of a predetermined magnitude, the magnitude being selected such that the impacting portion of the tool will penetrate the sidewall if the strength thereof has diminished below an acceptable level.