Bi-fold door assembly

Abstract

A bi-fold door assembly of the type adapted to be mounted in a doorway having opposing parallel jambs and a connecting header, the bi-fold door assembly including at least one jamb door pivotably secured to one jamb and a lead door having means hinging the same to the jamb door. In one embodiment, a header track having a U-shaped cross section having inner opposing legs with longitudinally disposed and transversely spaced flanges defining a longitudinal slot thereinbetween. The flanges slidably support a pivot assembly carried by the lead door to guide the lead door between its opened and closed positions. In one preferred embodiment, the door is fabricated from wood and is pivotably mounted at the door jamb side by means of a floor bracket assembly including means for selectively positioning the location of the pivot point on which is mounted a vertically adjustable support member carried by the door such that the height of the door may be selectively positioned as well as its location with respect to the door jamb. In a second embodiment, a floor track, mounted to the floor has a U-shaped cross section with the legs thereof being provided with opposing flanges defining a longitudinal slot thereinbetween. A vertically adjustable pivot support member is carried by an element fixed to the floor track at a point near the door jamb, while the lead door is provided with a pivot assembly member slidably supported by the floor track. A plastic door is disclosed having a unique and novel manner for hinging the doors together so that the same may be easily assembled and disassembled. A spring member comprising a pair of spaced end members connected by a pair of invertedly disposed flexible members to form a spring which is used in one embodiment to ensure that the bi-fold doors remain in a closed position and, in an alternate embodiment, the spring member may be used as a spacer element.