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Holding installation for double doors

  • US 4,653,229 A
  • Filed: 12/06/1984
  • Issued: 03/31/1987
  • Est. Priority Date: 02/22/1984
  • Status: Expired due to Fees
First Claim
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1. A door holding and closing installation for double doors comprising a leading door which is the first to close and a trailing door which then closes, the installation including:

  • a first electro-hydraulic door closer for said leading door, for moving said leading door into a closed position, said first door closer including a first electrically actuated holding device for holding said leading door in a selected open position;

    a second electro-hydraulic door closer for said trailing door, for moving said trailing door into a closed position, said second door closer including a second electrically actuated holding device for holding said trailing door in a selected open position, said second holding device being capable of being manually overridden by pushing said trailing door in the closing direction;

    blocking means associated with said second door closer and actuated in dependence on a position of said leading door for blocking the closing movement of the trailing door over a part only of its range of movement, said blocking means ensuring closing sequence control and said part of said range of movement starting from said closed position of said trailing door; and

    switch means associated with said second door closer, said switch means being actuated at a selected angle of opening of said trailing door to release said first electrically actuated holding device whereby said leading door closes and frees said blocking means to permit closing of said trailing door.

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