Emergency unlocking device for locking and unlocking systems...

Movable or removable closures – Closures interconnected for concurrent movement – Opposed similar movement

Reexamination Certificate

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Details

C049S118000, C049S141000, C049S280000

Reexamination Certificate

active

10987689

ABSTRACT:
An emergency unlocking device for locking and unlocking systems for swinging sliding doors, in particular of rail vehicles. The emergency unlocking device has a traction device that engages on a first spring-loaded pivoted lever that is connected via a second lever to a third lever. The third lever is attached to the axial shaft of a spring-loaded rotary magnet and has elongate holes in which a bolt is displaceably mounted. When the traction device is subjected to tensile stress, the bolt engages with a fourth lever that is pivotably mounted on a shaft, and moves the fourth lever. The fourth lever is operatively connected via a coupling rod and deflection unit to a locking rod that moves the vertical direction. A rod, via which a force component that brings about the locking and unlocking of the door leaves can be applied, engages on the fourth lever.

REFERENCES:
patent: 1335750 (1920-04-01), Pearson
patent: 2589480 (1952-03-01), Curtis
patent: 4235169 (1980-11-01), Peterson
patent: 2006/0174540 (2006-08-01), Oberleitner
patent: 38 08 390 (1988-10-01), None
patent: 197 45 753 (1999-04-01), None
patent: 101 16 580 (2002-10-01), None
patent: 101 16 583 (2002-10-01), None
patent: 0 197 025 (1986-10-01), None
patent: 0 335 860 (1989-10-01), None
patent: 2 202 897 (1988-10-01), None

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