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. 01, 2009
Filed:
Jun. 21, 2004
Robert M. Purgert, Brooklyn Heights, OH (US);
Jerzy Sobczak, Krakow, PL;
Lawrence C. Boyd, Jr., Shaker Heights, OH (US);
Nipendra P. Singh, Pepper Pike, OH (US);
Bruce P. Bardes, Montgomery, OH (US);
Robert M. Purgert, Brooklyn Heights, OH (US);
Jerzy Sobczak, Krakow, PL;
Lawrence C. Boyd, Jr., Shaker Heights, OH (US);
Nipendra P. Singh, Pepper Pike, OH (US);
Bruce P. Bardes, Montgomery, OH (US);
Other;
Abstract
A class of lightweight structural members, characterized by lighter weight and greater resistance to buckling under axial compressive loading, as compared to conventional structural members, is described. The lightweight structural members typically comprise a thin tubular member filled with a metallic foam material. The foam material preferably comprises particulate matter comprised of agglomerated fly ash material, and, preferably, gaseous material in pores within the foam material. In an alternate configuration, the lightweight structural member comprises two tubular members, one nested inside the other, wherein the annular volume between the tubular members is filled with metallic foam material. A method for manufacturing the structural members is also described.