Patent ID: 9718235
Date: 2017-08-01
CPC Classifications: B29C,B29L,E06B,F16B,Y10T

Claim:
1. A corner joint comprising: a first frame member defining a longitudinal axis and comprising a first corner end, wherein the first corner end comprises a first mitered surface located between an inner squared flange and an outer squared flange, wherein the inner squared flange defines a first surface on one side of the first mitered surface and the outer squared flange defines a second surface on an opposite side of the first mitered surface substantially parallel to the first surface such that the first mitered surface is located between the first and second surfaces, wherein the inner squared flange comprises a free edge aligned with the longitudinal axis of the first frame member and wherein the outer squared flange comprises a free edge aligned with the longitudinal axis of the first frame member; and a second frame member defining a longitudinal axis and comprising a second corner end, wherein the second corner end comprises a second mitered surface, an inner edge spaced longitudinally inwardly from the second mitered surface, and an outer edge spaced longitudinally inwardly from the second mitered surface, wherein the inner edge and outer edge extend transversely to the longitudinal axis of the second frame member, wherein the free edge of the inner squared flange on the first frame member faces the inner edge of the second frame member to form an inner joint aligned with the longitudinal axis of the first frame member, and wherein the free edge of the outer squared flange on the first frame member faces the outer edge of the second frame member to form an outer joint aligned with the longitudinal axis of the first frame member; wherein the first mitered surface faces the second mitered surface between the first surface of the inner squared flange and the second surface of the outer squared flange of the first frame member, wherein the first mitered surface and the second mitered surface define a miter joint plane that forms an acute angle with the longitudinal axis of the first frame member and an acute angle with the longitudinal axis of the second frame member.