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:
Dec. 29, 2015
Filed:
Aug. 13, 2012
Benjamin Gallup, Cambridge, MA (US);
Nathan Ball, Somerville, MA (US);
Bryan Schmid, Brookline, MA (US);
Daniel Walker, Cambridge, MA (US);
Benjamin Gallup, Cambridge, MA (US);
Nathan Ball, Somerville, MA (US);
Bryan Schmid, Brookline, MA (US);
Daniel Walker, Cambridge, MA (US);
Atlas Devices, LLC, Boston, MA (US);
Abstract
A rigid structure such as a ladder is disclosed having rotating hinges that allow the ladder to fold up and/or be disassembled and assembled. The hinge or hinges can be provided between ladder sections with one ladder section having a male hinge element, and another having a female hinge element. A cam element provided with the female hinge element can be moved between an unlocked position in which the ladder sections can rotate with respect to each other, and a locked position in which the structure is rigid.