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. 26, 2013
Filed:
Feb. 27, 2008
Patrick P. Mcdermott, Vienna, VA (US);
Patrick P. McDermott, Vienna, VA (US);
Other;
Abstract
An extendable beam has compact slideable segments with angular extensions connected by cables which are tensioned to strengthen the beam when the beam is extended by sliding the segments. Restraining parts slide along tracks on neighboring segments. Short fixed length cables are connected between tips of extensions and diagonally between extension tips and segments are tensioned when hinged extensions are deployed. Other cables are paid out and tensioned, connecting tips of extensions on adjacent segments. Internal pulleys and beam extension cables simultaneously slide adjacent segments to extend the beam. An external crane and lock extend the beam serially.