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. 31, 2012
Filed:
Dec. 22, 2009
Robert Stephen, Pomona, CA (US);
Douglas Stephen, Pomona, CA (US);
Robert Stephen, Pomona, CA (US);
Douglas Stephen, Pomona, CA (US);
Other;
Abstract
A composite metal male fastener is provided. The metal fastener includes an elongate hollow shell made of metal. The shell includes a threaded exterior for insertion or retraction from the threads of a female fastener. In addition, the shell element includes a central bore and a radially extending flange. The male fastener further includes a core element made of a composite material including plastic, fiberglass or carbon fiber or the like. In a first embodiment, the core element fills the shell's central bore and extends proximally from the proximal end of the shell to encapsulate the shell's flange to form a male fastener head. In an alternative embodiment, the shell's proximal extremity includes a radially extending flange to form a male fastener head for rotation of the male fastener. For this embodiment, the core element extends proximally to the shell's proximal end, without projecting beyond the shell's proximal end. The shell may have a closed distal end, or alternatively, the central bore may extend the length of the male fastener so that the core element fills the shell's central bore the entire length of the shell.