Liquid Metering Cap With Suction Valve for Spill Prevention

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Solution Overview

Problem

Existing liquid metering assemblies for beverage containers are often complex, cumbersome to clean, and fail to reliably prevent spilling when the container is accidentally overturned, despite their ability to meter fluid selectively.

Innovation Solution

A liquid metering assembly featuring a moveable diaphragm and adjustable liquid volume control member, which includes a dispensing aperture, a vent aperture, and an elongated valve member that moves between sealed and fluid-flowing positions in response to suction, allowing for controlled liquid dispensing and preventing spills when the container is overturned.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If adjustable liquid metering assemblies are incorporated into beverage container lids, then fluid dispensing control is improved, but device complexity increases

Engineering Contradiction:
Improvefluid dispensing controlVSAvoidassembly complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The liquid metering assembly is divided into separate functional components: a demand valve mechanism for controlled dispensing, an adjustable metering mechanism with rotating control member, and a diaphragm-based actuation system. This segmentation allows each component to perform its specific function independently while simplifying the overall design and maintenance of the assembly.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If adjustable liquid metering assemblies with multiple components are used, then fluid dispensing control is improved, but ease of cleaning deteriorates

Engineering Contradiction:
Improvefluid dispensing controlVSAvoidease of cleaning
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The assembly is designed with separable components that can be easily disassembled for cleaning. The demand valve, metering mechanism, and diaphragm are positioned to allow access from the container opening, enabling parents to quickly rinse and clean components without requiring complete disassembly or special tools.

Inventive Principle:
Principle #1Segmentation

3Reliability

If demand valve mechanisms are added to prevent spilling, then spill prevention is improved, but device complexity increases

Engineering Contradiction:
Improvespill preventionVSAvoidvalve mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The demand valve mechanism utilizes the suction force generated by the infant's own sucking action to open the valve and allow liquid flow. When sucking stops, the valve automatically closes due to pressure differential, preventing spills without requiring external control mechanisms or additional power sources.

Inventive Principle:
Principle #25Self-service

4Adaptability or versatility

If multiple control mechanisms are incorporated for precise liquid metering, then fluid dispensing control is improved, but ease of operation deteriorates

Engineering Contradiction:
Improveliquid metering precisionVSAvoidoperational simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The rotating control member integrates multiple functions: it adjusts the metering aperture size to control liquid flow rate, sets the desired volume for dispensing, and can be easily repositioned by parents during feeding. This single multi-functional component replaces what would otherwise require multiple separate controls, maintaining operational simplicity while achieving precise liquid metering.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 assembly effectively meters liquid volume and prevents spills by allowing controlled dispensing and sealing the container, making it easier to use and clean, while ensuring no liquid is released when the container is tipped.

Implementation Method 1

wherein the valve member is received in the fluid flowing aperture, and is moveable relative thereto when a suction is applied to the dispensing aperture of the container cap

Methodology Applied
Scientific EffectSuction: Suction

Implementation Method 2

When suction is not being applied to the drinking spout, the demand valve substantially prohibits the release of fluid from the beverage container

Methodology Applied
Scientific EffectPressure differential: Pressure Gradient

Data Source

PatentUS8678228B2Liquid metering assembly
Publication Date: 2014.03.25 ZAK DESIGNS INC
  • US8678228B2 patent drawing
  • US8678228B2 patent drawing
  • US8678228B2 patent drawing

AI summary

A liquid metering assembly is described and which includes a container for enclosing a source of a liquid to be dispensed; a container cap defining a dispensing aperture and a vent aperture which is releasably affixed to the container; a moveable diaphragm releasably cooperating with the container cap, and coupled in fluid flowing relation relative to the dispensing aperture, and wherein the moveable diaphragm has a valve member; and a moveable liquid volume control member which cooperates with the moveable diaphragm, and wherein, when a predetermined suction is applied to the dispensing aperture of the container cap, a user may withdraw a given volume of liquid from the beverage container.