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Method and apparatus for making a contoured muntin bar assembly or grid. A tubular muntin bar grid has a first muntin bar formed from an elongated tube having ends that engage a window spacer frame and include side walls that have relatively narrow top and bottom planar walls and relatively wider si

Method and apparatus for making a contoured muntin bar assembly or grid. A tubular muntin bar grid has a first muntin bar formed from an elongated tube having ends that engage a window spacer frame and include side walls that have relatively narrow top and bottom planar walls and relatively wider side planar walls. The top and bottom planar walls defining one or more slots that define intersecting muntin bar positions. One or more intersecting muntin bars formed from elongated tubes have ends that engages the first elongated muntin bar in a region of a slot. The grid includes one or more joiner clips for positioning the one or more intersecting muntin bars in relation to said first muntin bar. Each joiner clip has a tree portion that extends into one end of said intersecting muntin bars to support the intersecting muntin bars in relation to the first muntin bar and an anchor portion which extends into a slot of said first muntin bar and connects to a wall of the first muntin bar spaced from a wall of the first muntin bar contacted by an associated intersecting muntin bar which engages the tree portion of the joiner clip. The anchor portion includes either an integral tab which traps the wall of the muntin bar between a flexible finger or a separate tab which is mounted to a clip base that defines the flexible finger.

대표청구항 ▼

What is claimed: 1. A tubular muntin bar assembly comprising:a) a first muntin bar formed from an elongated tube having ends that engage a window spacer frame and include side walls that have relatively narrow top and bottom planar walls and relatively wider side planar walls, said top and bottom pl

What is claimed: 1. A tubular muntin bar assembly comprising:a) a first muntin bar formed from an elongated tube having ends that engage a window spacer frame and include side walls that have relatively narrow top and bottom planar walls and relatively wider side planar walls, said top and bottom planar walls defining one or more slots that define positions for intersecting muntin bars;b) one or more intersecting muntin bars formed from elongated tubes having one end that engages the first elongated muntin bar in a region of a slot;c) one or more joiner clips for positioning the one or more intersecting muntin bars in relation to said first muntin bar comprising:i) a tree portion that extends into one end of said intersecting muntin bars to support the intersecting muntin bars in relation to the first muntin bar;ii) an anchor portion including a flexible body which flexes to a configuration which allows said flexible body to extend through a first slot of said first muntin bar as the tree portion extends through a second slot of the first muntin bar in a wall of the first muntin bar contacted b an associated intersecting muntin bar which engages the tree portion; andiii) a tab laving an abutting portion that seats against an outer wall the first muntin bar at the region of the first slot to fix in position the joiner clip with respect to the first muntin bar and further having a generally planar, outwardly facing cover having a surface area greater than an area of the first slot which overlaps edges around a perimeter of the first slot.