Reinforced folding door and hinge assembly

  • US 9,879,471 B2
  • Filed: 06/02/2016
  • Issued: 01/30/2018
  • Est. Priority Date: 09/30/2015
  • Status: Active Grant
First Claim
Patent Images

1. An accordion type folding door system comprisinga plurality of adjacent panels arranged vertically and side-by-side, each panel including a top end having an upper margin, and a bottom end having a lower margin;

  • a hinge assembly disposed between and interconnecting a pair of adjacent panels, each of the pair of adjacent panels including a side edge having longitudinal groove and an extension flange,wherein the hinge assembly comprisesa hinge pin,a plurality of hinge knuckles disposed vertically end-to-end in an alternating arrangement on the hinge pin, at least one of the hinge knuckles comprising a tubular central opening for accepting the hinge pin, an outwardly extending tongue for connecting to a corresponding longitudinal groove in an adjacent panel in a tongue and groove connection, and an outwardly flared wedge that extends between and beyond the extension flanges of the panels, whereby the wedge cooperates with, and respective outer surfaces of the wedge directly contact, the extension flanges to limit angular un-folding extension of the pair of adjacent panels to a maximum desired angle.

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