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Dropper bottle assembly with squeeze cap
| Details |
Inventors: Leoncavallo, Richard A.; Mehra, Ravinder C.; Phillips, Gregory R.;
Assignee: Nalge Company (Rochester, NY)
Primary Examiner: Shaver; Kevin P.
Assistant Examiner:
Attorney, Agent or Firm: Wood, Herron & Evans
The present invention is a dropper bottle assembly (30) with a dispensing closure (34) having a base (48) adapted to be secured to the bottle 32) and an elongated dropper spout (64) extending from the base (48) to a distal open end (72) and with a separate cap (36, 236) defining a cavity (76) sized to receive the spout (64) therein wherein the cap (36, 236) and closure (34) share cooperating hinge (80, 84) and lock structures (130, 132, 264) for pivotably mounting the cap (36, 236) about a fixed axis and locking the cap (36, 236) closed with the spout opening (72) closed off. The lock (130) and hinge (84) structure are formed on the spout (64) below the opening (72) thereof but spaced from the closure base (48). The lock mechanism includes a lock arm (134) on the closure spout and a lock edge (132,264) at or near the distal end (134) of a front wall portion or tab (136, 244) extending from the cap top with zones of flexibility (160, 240, 242) defined by side slots (160) or thinned-out hinge segments (240, 242) to allow the distal edge (134) to flex away from the lock arm (134) when the cap (36, 236) sides (164, 250) are squeezed to facilitate opening the cap. The spout is sealed by a surface (170) of the cap or a compliant mat (174) on that surface, the latter being held in place by one or more ribs (178, 252) within the cap (36, 236). |
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DETAILED DESCRIPTION Applicants have invented an improved dropper bottle assembly which minimizes or eliminates many of the problems of prior art dropper bottle assemblies.
A nozzle or dispensing closure has a base portion matable to the bottle and an elongated spout extending from the top wall of the base portion.
A cap is pivotably mounted to the closure to pivot over the spout and surround the spout when the cap is closed.
The cap and dispensing closure have cooperating locking mechanisms to hold the cap in sealing relationship with the dropper spout.
In accordance with the present invention, the locking mechanism of the closure is situated on the exterior of the spout rather than within the spout or on the base portion of the closure.
Further in accordance with the present invention, the locking mechanism of the cap is defined by a front wall portion of the cap extending from the top of the cap with a lock edge formed on the front wall portion such as adjacent the distal end of the front wall portion.
The front wall portion is defined between zones of flexibility formed in the cap side wall and positioned such that pressure on the cap side wall causes the front wall portion to flex outwardly from the cap.
The zones of flexibility may be defined by thinned-out hinge segments in the cap or by slots to either side of the front wall portion.
Thus, as the cap is pivoted closed, the distal end of the front wall portion slides over the closure lock mechanism and locks thereto.
To open the cap, pressure on the sides of the cap flexes the front wall portion such that the distal end and the associated lock edge come away from the closure allowing the cap to be pivoted open.
The dispensing closure and mounted cap may be supplied to the liquid manufacturer pre-assembled allowing for one step capping.
Additionally, the assembly is easily opened by squeezing the cap to disengage the locking mechanism and pivoting the cap over the spout.
In this way, the cap is held to the nozzle thus minimizing potential contamination while also permitting simple one hand dispensing
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