DOUBLE DOOR LOADED IN CLOSING DIRECTION BY SPRING

Title:

DOUBLE DOOR LOADED IN CLOSING DIRECTION BY SPRING

Document Type and Number:

Japanese Patent JPS5915181

Kind Code:

A

Abstract:

1. A double-leaf door which is spring-loaded in the closing direction and which has a device for damping the closing movement and a closing sequence regulator, in particular a fire retarding door, wherein the damping of the trailing leaf takes place via a hydraulic damping element with a throttled transfer flow between two pressure chambers which are controlled in opposite senses by a double acting piston, characterised in that a control valve (3) which is directly or indirectly actuatable via the leading leaf is arranged in the transfer flow passage (2) from the one pressure chamber (11 or 12 respectively) to the other.

Inventors:

KOERLING WERNER
KRAFT FRANZ

Application Number:

JP1897783A

Publication Date:

January 26, 1984

Filing Date:

February 09, 1983

Export Citation:

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Assignee:

ECHT & CO NACHF SCHULTE KG

International Classes:

E05F3/22; E05F3/10; E05F5/12; (IPC1-7): E05F3/10

Attorney, Agent or Firm:

Toshio Yano

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