Elevator shaft closure and method of fulfilling fire...

Elevator – industrial lift truck – or stationary lift for vehicle – With closure means for shaft opening through landing

Reexamination Certificate

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C187S333000, C187S340000

Reexamination Certificate

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07140471

ABSTRACT:
An elevator shaft closure and a method of fulfilling fire protection requirements for the same include a shaft door frame having in the region of the closing edge of the frame with a door leaf of at least two door frame parts attached to a building and connected together with a thermally separable material. Under a predetermined stress, the connection between the door frame parts is released and one of the door frame parts displaces in front of the door leaf while the other door frame part substantially retains its original shape.

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patent: 5404969 (1995-04-01), Hoefsloot
patent: 5836424 (1998-11-01), Allen
patent: 5988321 (1999-11-01), Kondo
patent: 6539673 (2003-04-01), Ketonen
patent: 2003/0167709 (2003-09-01), Harkins et al.
patent: 2148993 (1985-06-01), None
patent: 2 352 754 (1992-04-01), None
patent: 2309729 (1997-08-01), None
patent: 2352754 (2001-02-01), None
patent: 08 165081 (1996-06-01), None
Expert Committee, “Vereinigung der Technischen Überwachungsvereine” May 5, 1999, Berlin.

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