Joints and connections – Articulated members – Lockable at fixed position
Patent
1996-01-11
1997-03-18
Knight, Anthony
Joints and connections
Articulated members
Lockable at fixed position
403315, 5 991, 5 981, A47D 700
Patent
active
056116349
ABSTRACT:
A pivotal device for a playpen which has at least two siderails pivotally connected to the pivotal device comprising a connector with two open ends for the corresponding siderail to be pivotally engaged therein by a first pin extending therethrough, a resilient element received in each of the siderails and having a first protrusion extending through a fifth hole defined in the siderail, the connector having a first elongated slot, a second hole below the first elongated slot and two third holes respectively defined therein, a locking member slidably mounted to a top of the connector and having a sixth hole and a second elongated slot defined therein, a second pin extending through the first elongated slot and the sixth hole, a third pin extending through the second hole and the second elongated slot, when folding the playpen, the first protrusions are pushed inwardly by being pressed, each of the siderails can be rotated about the corresponding first pin and the second pin is moved downwardly by the siderail when rotating so as to pull the locking member downwardly but when extending the playpen, the second pin is remained and the oval hole is therefore in misalignment with the third hole.
REFERENCES:
patent: 3162865 (1964-12-01), Tigrett
patent: 5483710 (1996-01-01), Chan
patent: 5485655 (1996-01-01), Wang
patent: 5497517 (1996-03-01), Wang
patent: 5530977 (1996-07-01), Wang
Crandell Ralph F.
Knight Anthony
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