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A child safety catch assembly
A safety catch assembly, for a door handle connected to a square spindle, comprising a sliding catch 21 having an elongate slot, e.g. keyhole shape, having a locking section with a width equal to the square spindle which prevents rotation of the spindle and an unlocking section having an enlarged portion with minimum diameter corresponding to diagonal of spindle square cross section which allows rotation of the spindle. The sliding catch is spring biased into position where locking section is located around the spindle. Preferably sliding catch is mounted in track in a housing, fixing holes or slots may be included to match existing mounting holes of handle assemblies. Preferably a secondary spring biased sliding catch 40 is provided which blocks movement of the primary catch 21; the secondary sliding catch is slid prior to sliding of the primary catch in an orthogonal direction; this requires two different sequential motions before the handle can be turned providing a childproof catch. A releasable tether limiting the opening of the door/window may be included.
A child safety catch assembly
A safety catch assembly, for a door handle connected to a square spindle, comprising a sliding catch 21 having an elongate slot, e.g. keyhole shape, having a locking section with a width equal to the square spindle which prevents rotation of the spindle and an unlocking section having an enlarged portion with minimum diameter corresponding to diagonal of spindle square cross section which allows rotation of the spindle. The sliding catch is spring biased into position where locking section is located around the spindle. Preferably sliding catch is mounted in track in a housing, fixing holes or slots may be included to match existing mounting holes of handle assemblies. Preferably a secondary spring biased sliding catch 40 is provided which blocks movement of the primary catch 21; the secondary sliding catch is slid prior to sliding of the primary catch in an orthogonal direction; this requires two different sequential motions before the handle can be turned providing a childproof catch. A releasable tether limiting the opening of the door/window may be included.
A child safety catch assembly
JESPER BIRK ANDERSON (author)
2017-09-27
Patent
Electronic Resource
English
IPC:
E05B
LOCKS
,
Schlösser