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Automatic sliding door

  • US 5,247,763 A
  • Filed: 06/17/1992
  • Issued: 09/28/1993
  • Est. Priority Date: 05/10/1989
  • Status: Expired due to Fees
First Claim
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1. An automatic sliding door comprising:

  • at least one door panel;

    main drive means for driving said door panel to an open position and a closed position;

    clutch means between said main drive means and said panel for disconnecting said panel from said main drive means to open said door in event of a power failure;

    auxiliary drive means connected to said door panel and storing energy received when said door panel is in said closed position for driving said door panel to said open position when said clutch means disconnects said main drive means from said panel in event of power failure;

    said auxiliary drive means having a rubber cable actuated always with said door so that said auxiliary drive means can be tested with every movement of said door panel.

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