Revolving door

Details Revolving door Revolving door

2006-05-30

2006-05-30

Boles, Derek S. (Department: 3749)

Ventilation

Means combined with door

C454S185000

Reexamination Certificate

active

07052390

ABSTRACT:
A revolving door for installation in a building, comprising a cylindrical shell wall, within the shell wall door leaves rotating about a central shaft and between a bottom plate and a top plate, and entrance and exit openings provided in the shell wall, at least one of which having an air-outflow unit disposed at a vertical edge of the shell wall, having an outlet slot for the generation of a vertically oriented and between the bottom plate and the top plate oriented air curtain substantially filling the headroom of the door, wherein the outlet slot is directed substantially radially towards the interior of the revolving door, and wherein during use the door leaves provide an antidraught seal, with the air-outflow unit being placed inside the building.

REFERENCES:
patent: 5042367 (1991-08-01), Hopkins
patent: 5878529 (1999-03-01), Huber
patent: 6375562 (2002-04-01), Hein
patent: 6857956 (2005-02-01), Fuchs
patent: 4126924 (1992-11-01), None
patent: 19911220 (2000-06-01), None
patent: 20006968 (2001-05-01), None
patent: 10018868 (2001-10-01), None

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