Keyed dispensing system
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Solution Overview
Problem
Existing dispensing systems face challenges with mechanical keying systems, which are costly, prone to misalignment, and lack adaptability for multiple dispensers, leading to issues with unauthorized refill container installation and inventory management, and require significant tooling and lead time for manufacturing compatible components.
Innovation Solution
The use of a ferrite bead or tank circuit as an identifier within the plunger mechanism, detected by an air coil, allows for electronic keying that prevents unauthorized refills while providing position information about the pumping mechanism, enabling precise control of fluid dispensing with minimal power consumption and low-cost components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical keying systems are used to prevent unauthorized refills, then distributor control and product compatibility are improved, but manufacturing costs, tooling requirements, and inventory complexity increase significantly
Solution Approach 1:
The patent replaces mechanical keying systems with an electronic identification system using RFID tags and readers. The RFID tag contains an unique identifier that is read by the dispenser's reader, eliminating the need for physical keys and mechanical locking mechanisms. This substitution reduces manufacturing complexity while maintaining reliable distributor control and authorization verification.
Solution Approach 2:
The RFID-based system provides universal compatibility across different dispenser models and refill container types. A single RFID reader can verify multiple types of authorization codes, and the system can accommodate various product types without requiring separate mechanical keying mechanisms for each. This multi-functionality reduces inventory complexity and tooling requirements.
2Reliability
If mechanical keying mechanisms are implemented for each dispenser-product-distributor combination, then unauthorized refilling is prevented, but lead time for manufacturing and inventory costs increase
Solution Approach 1:
The RFID identification system eliminates the need for custom-mechanized keying components for each product-distributor combination. RFID tags can be programmed with unique identifiers during or after manufacturing, and the dispenser reader can verify these identifiers without requiring pre-configured mechanical keys. This dramatically reduces manufacturing lead time while maintaining secure authorization control.
Solution Approach 2:
The authorization code can be pre-programmed into the RFID tag during the refill container manufacturing process, eliminating the need for post-manufacturing keying configuration. The dispenser reader is pre-programmed with the expected authorization codes, allowing immediate verification upon container installation without additional setup time.
3Manufacturing precision
If mechanical keys are used for identification, then proper refill container installation is ensured, but the system is prone to misalignment and key loss
Solution Approach 1:
The RFID system replaces mechanical key insertion and alignment with a non-contact electromagnetic field-based identification. The reader detects the RFID tag's presence and reads its identifier without requiring precise physical alignment or insertion, eliminating misalignment issues entirely. The electronic verification provides reliable installation confirmation without the fragility of mechanical keys.
Solution Approach 2:
The RFID tag acts as an intermediary carrier of the authorization information, eliminating the need for direct mechanical key-dispenser interaction. The electromagnetic field mediates the communication between the tag and reader, providing robust identification that is not susceptible to physical wear, loss, or misalignment.
4Adaptability or versatility
If electronic keying systems are implemented, then adaptability for multiple dispensers and reduced inventory costs are achieved, but power consumption and system complexity increase
Solution Approach 1:
The RFID reader operates in a periodic or on-demand manner, activating the electromagnetic field only when a refill container installation is detected or verified. The system monitors for the presence of a container and triggers the identification sequence only at these periodic intervals, rather than continuously, thereby minimizing power consumption while maintaining adaptability across multiple dispensers.
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
This solution effectively prevents unauthorized refills, reduces inventory costs, and allows for adaptable keying configurations, ensuring proper refill container installation while minimizing power usage and manufacturing complexities, thus enhancing the efficiency and cost-effectiveness of dispensing systems.
Implementation Method 1
detected by an air coil
Implementation Method 2
ferrite bead or tank circuit as an identifier
Data Source
Figure 1~1A
Figure 2
Figure 3
AI summary
A dispensing system includes a housing and a refill container carrying a dispensable material and received in the housing. A pump mechanism is coupled to the refill container and movable from a first position to a second position and back to the first position. An identifier is carried by either the refill container or the pump mechanism, and a detection device is carried by the housing. The detection device monitors a status of the identifier and allows operation of the pump mechanism based on a status change of the identifier.