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:
Jan. 07, 2014
Filed:
Feb. 19, 2010
Glenn Wayne Studebaker, Norfolk, NE (US);
David Lee Samuelson, Madison, NE (US);
Lionel Edward Dayton, Norfolk, NE (US);
Richard Lukes, Decorah, IA (US);
Glenn Wayne Studebaker, Norfolk, NE (US);
David Lee Samuelson, Madison, NE (US);
Lionel Edward Dayton, Norfolk, NE (US);
Richard Lukes, Decorah, IA (US);
Nucor Corporation, Charlotte, NC (US);
Asia Fastening (US), Inc., Wilmington, DE (US);
Abstract
The composite joist floor system includes joists supporting metal decking and a stand-off fasteners are spaced along the length of the joist Each fastener has an upper portion with a through hardness between HRB 70 and HRC 40 and a lower portion having a threaded portion with a through hardness of between HRB 70 and HRC 40 and a thread-forming portion adjacent the threaded portion with at least a HRC 50 hardness and failure torque to thread-forming torque of at least 3.0 and a drive torque at least 20% less than a thread-forming torque, and a fluted lead portion adjacent the thread-forming portion with a nominal diameter between 70 and 95% of major diameter of the threaded portion adapted to form a fastener opening. These stand-off fasteners extend into and are encapsulated by a cementitious slab supported by the metal decking to form a composite floor system.