Top-fill hummingbird feeder with snap-actuated base seal
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Solution Overview
Problem
Existing hummingbird feeders face issues with frequent refilling, spillage risks, and difficulty in cleaning due to vacuum-based designs, which require inversion and have limited access for filling and cleaning, and may corrode or leak, leading to insect contamination.
Innovation Solution
A top-fill hummingbird feeder with a large open top for easy filling and cleaning, featuring a vertically movable tubular insert within a collar that alternately opens and closes fluid flow with a positive audible and physical 'snap' feedback, allowing for easy refilling without inversion and ensuring a secure seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vacuum-based design is used to control liquid flow, then the liquid can be kept from draining rapidly, but the feeder requires inversion for refilling and has limited access for cleaning
Solution Approach 1:
The patent inverts the traditional vacuum feeder design by placing the filling opening at the top rather than requiring inversion of the entire feeder. The container remains upright during refilling, and the sealing mechanism is accessed from the top through the removable cap, eliminating the need to invert the feeder while maintaining vacuum-based flow control.
Solution Approach 2:
The feeder is divided into separable components: a removable cap, a container, and a base with feeding ports. This segmentation allows the cap to be removed for easy top filling and cleaning of the container interior, while the base remains stationary with the vacuum sealing mechanism, resolving the access problem without compromising flow control.
2Reliability
If a small opening is provided for filling and cleaning, then the vacuum seal can be maintained, but access to the interior becomes difficult
Solution Approach 1:
The cap transitions from a sealed closed state to an open removed state, dynamically changing the access configuration. When closed, it maintains the vacuum seal; when removed, it provides wide top access to the container interior for easy filling and cleaning, resolving the contradiction between seal integrity and access ease.
3Ease of operation
If a rotational sealing mechanism is used, then the opening can be large for easy cleaning, but the user lacks positive indication of open/closed positions
Solution Approach 1:
The snap-actuated sealing mechanism provides tactile and audible feedback when the cap is properly sealed or opened. This positive indication system informs the user of the cap's position without requiring visual inspection or complex indicators, resolving the information loss problem while maintaining large opening access.
4Reliability
If the feeder is inverted for refilling, then the vacuum can be created, but spillage risk increases
Solution Approach 1:
The patent inverts the refilling procedure from the traditional method by keeping the feeder upright and providing top access through the removable cap. This eliminates the spillage hazard associated with inverting the feeder while maintaining vacuum-based flow control through the sealing mechanism at the base.
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 provides a reliable, consumer-friendly feeder that can be easily filled and cleaned, preventing spillage and contamination, while ensuring a secure seal and easy maintenance, enhancing user convenience and durability.
Implementation Method 1
The vacuum at the top of the container (or put another way, the outside air pressure) keeps the liquid in the top container from draining too rapidly out of the feeding basin.
Data Source
AI summary
A top-fill hummingbird feeder has a liquid container with a a lower bottom opening which can be screw-threaded into a central collar of a feeding basin. An insert is received within the central collar and is configured to be vertically movable between a first position in which fluid is allowed to flow from the liquid container to the basin, and a second position in which fluid flow from the container to the basin is prevented. Movement of the insert between the two positions is effected by pushing the liquid container toward the basin (the closed position) and by pulling the liquid container away from the basin (the open position). Each movement of the insert has an associated “snap” or gives positive physical feedback which the user can feel that assures the user that the desired fluid flow or fluid sealed position has been achieved.