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Automatic door operator

  • US 5,325,628 A
  • Filed: 04/02/1993
  • Issued: 07/05/1994
  • Est. Priority Date: 09/06/1991
  • Status: Expired due to Fees
First Claim
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1. An automatic door operator assembly for use in opening and closing a door slideably mounted to a building structure and movable along a path adjacent a doorway of said structure, the doorway defining an area inside said building structure and an area outside said building structure, said operator assembly comprising:

  • a motorized unit secured on a first side of said doorway and inside said building structure;

    a gear drive driven by said motorized unit;

    said door mounted on the outside of said building structure and at least one structural member rigidly secured to said door;

    an idler bracket assembly secured to a second side of said doorway opposite said first side of said doorway and inside said building structure; and

    a flexible member forming a continuous loop, said flexible member in association with said gear drive, said structural member, and said idler bracket assembly, such that said flexible member actuated by said gear drive engages said structural member causing said door to open or close depending upon the direction of movement of said flexible member.

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