Door coupler and locking device

Details Door coupler and locking device Door coupler and locking device

2002-02-25

2009-10-27

Nguyen, John Q. (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

Including barrier mounted at landing

C187S310000, C187S319000

Reexamination Certificate

active

07607517

ABSTRACT:
A door coupler provided with coupling elements actuated by means of a linkage so as to engage a counter element provided on the landing door and a locking hook that has a closed position and a released position. The release of the locking hook from the closed position to the released position is allowed when the coupling element meets the counter element. The locking hook and the coupling elements are disposed at a distance from each other.

REFERENCES:
patent: 4313525 (1982-02-01), McDonald
patent: 4926974 (1990-05-01), Morris et al.
patent: 4926975 (1990-05-01), Morris
patent: 6021871 (2000-02-01), Grabner
patent: 6164417 (2000-12-01), Oberleitner
patent: 6173815 (2001-01-01), Mittermayr
patent: 6220396 (2001-04-01), Heath, III
patent: 6446759 (2002-09-01), Kulak et al.
patent: 0 709 334 (1996-05-01), None
patent: 54-138259 (1979-10-01), None
patent: WO 97/31853 (1997-09-01), None

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