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Revolving door lock

  • US 5,711,111 A
  • Filed: 05/11/1995
  • Issued: 01/27/1998
  • Est. Priority Date: 10/06/1992
  • Status: Expired due to Term
First Claim
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1. A revolving door lock having outer walls laterally defining a passage space, comprising at least two revolving doors coupled for relatively synchronous movement and each having two wings rotatable about respective vertical rotating axes of the revolving doors, with an angle of said wings of the revolving doors with respect to a line of symmetry in a longitudinal direction being an angular off-set of 90°

  • so that the passage space with respect to the line of symmetry also has an angular off-set of 90° and

    the passage space is always closed at least on one side, wherein the rotating axes of the revolving doors are positioned at a distance which is at least about 2.25 times greater than the radius of one of the revolving doors to create an intermediate space between the revolving doors which is sufficiently large enough for a person to stand therein without interference from the revolving doors.

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