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US 2007/0200355 A1Published application
Multi-point sliding door latch
AssigneeVision Industries Group, Inc.
InventorsLuke Liang, Tong Liang, David Chen
Life of this patent
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AssigneeVision Industries Group, Inc.
InventorsLuke Liang, Tong Liang, David Chen
Estimating the term…
A multi-point door latch adapted to fit in the stile of a door. The multi-point door latch includes a pair of hooks that are allowed to rotably pivot around a pair of eccentric cams. The eccentric cams are allowed to rotate inside of apertures located through the hubs of the hooks. The eccentric cams are geometrically centered inside the hubs of the hooks, and are kept in position via pins that are eccentrically orientated through cams. The multi-point door latch also includes an opening for receiving a turning mechanism. In addition, the turning mechanism is connected to a pair of toothed gear wheels that mesh with a toothed bar. The toothed bar is connected to a synchronizing link which simultaneously rotates the hooks to either an engaged or disengaged position. The multi-point door latch also includes stopping members, which prevent the hooks from rotating passed a certain point when the door latch is not engaged.
A multipoint latch of the type appropriate for use in sliding doors, having an enclosure which houses two retractable hooks that work in coaction with two keepers that are set in a door jamb, so as to allow for locking and unlocking of the sliding door, wherein the multipoint door latch comprises:
A multipoint latch of the type appropriate for use in sliding doors, said latch having a housing assembly sized to fit within the opening in the lock face of a stile of a sliding door, said housing having a toothed bar that meshes with a segment of a first and a second gear wheel, said segments comprising a toothed portion and a hub portion, said gear wheel having a pivot arm for rotatable motion within the housing about a pivot axis, said hub portion including an aperture for receiving a tail member to move said gear wheel and wherein the movement of said gear wheel causes a synchronizing plate to slide from a first position to a second position, said movement of said synchronizing plate causing a hook portion of upper and lower hook assemblies to move from a first position to a second position.
Dependencies are inferred from the claim text.