Patent CA-1295970-C (CA)
Title: Child resistant dispensing closure
Inventor: LA VANGE DONALD
IPC: B65D50/06
Filed: 1988-03-31
Granted: 1992-02-18
Abstract: ABSTRACT         A child resistant dispensing closure of the type comprising a cap base member and a cap lid member.  The cap base member is provided with a dispensing opening, a slot, and a cap locking bead adapted to engage a container locking bead provided on the neck of a container. The container locking bead is provided with an interruption which is adapted to be brought into and out of alignment with the slot by manually rotating the cap base member with respect to the neck.  The cap lid member is provided with a locking prong adapted to be received within the slot when the cap lid member assumes a closed position wherein it closes off the dispensing opening.  The locking prong, when the cap lid member is in the closed position, is adapted to be engaged beneath the continuous portion of the container locking bead.  The cap lid member is adapted to thereafter assume the open position by a user manually rotating the cap base member with respect to the neck so as to bring the slot into alignment with the interruption in the container locking bead and then manually moving the cap lid member away from the cap base member so as to withdraw the locking prong from the slot, thereby presenting an unobstructed dispensing opening.  Alignment of the slot with the interruption in the bottle bead may be indicated by the alignment of visible indicia provided on the dispensing closure and the neck of the container.          An alternative embodiment for the closure comprises a cap member and a spout member.  The cap member is provided with an exterior skirt, a top surface having an elongated groove formed therein, and an interior skirt.  The interior skirt is provided with a cap locking bead adapted to engage a container locking bead provided on the neck of a container for rotatably mounting the cap member on the neck of the container.  The elongated groove has a dispensing opening and an open area formed therein, and the interior skirt is provided with an interruption at the location of the open area so as to maintain the area unobstructed.  The container locking bead is also provided with an interruption. The spout member includes an elongated body having a longitudinal dispensing passage therein and adapted to be mounted at one end in the elongated groove for rotation with respect to the cap member.  The spout member is provided with a depending locking prong adapted for insertion into the open area.  The spout member is adapted to assume an open position wherein the spout member is oriented vertically with respect to the cap member and the dispensing opening and longitudinal passage are in communication.  The spout member is capable of being rotated from the open position downwardly toward the cap member to achieve a closed position wherein the locking prong is received within the open area of the cap base member and the interruption in the container locking bead. Realization of the latter position requires that the cap member be rotated, as required, with respect to the neck of the container so as to bring the open area and the interruption into alignment.  The closed and locked position for the spout member is achieved by further rotation of the cap member with respect to the neck so that the locking prong is in engagement with an uninterrupted portion of the container locking bead.