Liquid Dispenser Cap with Removable Vent Sealing
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Solution Overview
Problem
Existing liquid dispensers face challenges in preventing contamination and bacterial ingress through ventilation openings while ensuring rapid drying of residual liquid, particularly in pharmaceutical applications like eye drops.
Innovation Solution
A liquid dispenser design featuring a protective cap with a removable closure element that seals ventilation openings until use, combined with a slimmer applicator neck and various closure mechanisms to prevent contamination, including adhesive tapes, additional caps, and rotatable segments, ensuring rapid drying and hygiene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ventilation openings are provided in the protective cap to enable rapid drying of residual liquid, then drying speed is improved, but contamination and bacterial ingress risk increases
Solution Approach 1:
The protective cap is pre-assembled with the liquid dispenser, but the ventilation openings are kept closed during shipping and storage. The closure element is removed or displaced only when the product is ready for use, allowing ventilation openings to enable rapid drying while preventing contamination during transport.
Solution Approach 2:
The protective cap is divided into functional segments: a closure element that seals the ventilation openings and a cap body with ventilation openings. This segmentation allows the same structure to provide both protection (when closed) and ventilation (when open) for rapid drying.
2Reliability
If the protective cap is kept sealed during shipping to prevent contamination, then product safety is improved, but drying capability deteriorates
Solution Approach 1:
The protective cap transitions from a static sealed structure to a dynamic system where the closure element can be removed or displaced. This allows the cap to adapt its function: sealed during shipping for safety, and ventilated during use for rapid drying capability.
3Object-affected harmful factors
If a closure element is added to seal ventilation openings, then contamination prevention is improved, but device complexity increases
Solution Approach 1:
The closure element is integrated with the protective cap structure, combining the sealing function with the existing cap design. This merging approach prevents contamination without requiring a completely separate sealing mechanism, thereby limiting the increase in device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively prevents bacterial contamination and ensures rapid drying of residual liquid, meeting case-specific requirements and regulatory standards.
Implementation Method 1
A liquid dispenser design featuring a protective cap with a removable closure element that seals ventilation openings until use
Implementation Method 2
such a cap may possess at least one ventilation opening through which ambient air can flow into a cap interior when the protective cap is in the attached state
Data Source
AI summary
A liquid dispenser including a liquid reservoir, a bottle body and a delivery head fastened to the bottle body and having a delivery opening. The liquid dispenser additionally includes a protective cap attachable to the delivery head and having at least one ventilation opening and a cap interior. Ambient air flows into the cap interior through the ventilation opening when the protective cap is in an attached state. The liquid dispenser includes a removable closure element having a shipping state preventing ambient air from traveling through the at least one ventilation opening to the delivery opening. The delivery head has an upper annular face and an applicator neck having an outside and the protective cap is held on the outside of the applicator neck in the attached state. The applicator neck has an elongate shape with a cylindrical shell face and an end face penetrated by the delivery opening.