×

Bi-fold door assembly

  • US 3,957,102 A
  • Filed: 02/24/1975
  • Issued: 05/18/1976
  • Est. Priority Date: 02/24/1975
  • Status: Expired due to Term
First Claim
Patent Images

1. A bi-fold door assembly for use in a doorway opening framed by a header, a sill and side wall jambs, said assembly including upper and lower track members mounted respectively on the header and sill and extending between the side wall jambs, a pair of bi-fold door panels hinged together at next adjacent side edges and of a size to extend between said track members and to close at least part of said doorway opening, means for fixed pivotal location provided between said track members and one of said door panels at the outer disposed upper and lower corners thereof, and means for guided pivotal retension provided between said track members and the other of said door panels at the opposite outer disposed upper and lower corners thereof, said means of fixed pivotal location including axially aligned pivot pins mounted in the upper and lower framing members of said one door panel and pivot brackets receptive thereof and provided on said track members, each of said pivot brackets being adjustable on said track members and each including a pivot bushing and means of fixing the adjusted location thereof, the upper disposed of said pivot pins being axially reciprocal and spring biased for ease of engagement and disengagement with its respective bushing, and the lower disposed of said pivot pins including means for setting the door height relative to said sill track member, said means of guided pivotal retention including axially aligned guide pins mounted in the upper and lower framing members of said other door panel and slide blocks receptive thereof and provided on said track members, and snap-fitted means of retaining engagement provided between said guide pins and said slide blocks (including);

  • said snap-fitted means including having slide blocks (being) formed for track engagement at relatively opposite side edges thereof, an opening provided clear through said slide blocks between opposite faces thereof and receptive of a guide pin therewithin, said guide pins having a tapered headed end formed to be axially received through said slide block openings and including a ring groove provided next adjacent thereto, and means provided within said slide block openings and between the open ends thereof for fitted engagement with said groove and retention of said guide pins to said slide blocks, said openings being relieved at one end of said slide blocks for providing yielding resistance in the extension of the headed end of said guide pins therethrough and snap-fitted engagement of said retention means within said ring grooves.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×