Height-Adjustable Tray for Contactless Drive-Thru Exchange
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Solution Overview
Problem
Existing exchange assemblies for drive-thru settings lack a height adjustable tray mechanism that enables contactless payment and transfer of food and beverages while minimizing the transmission of pathogens.
Innovation Solution
A housing-mounted drawer system with extensible drawer slides and a lift module, allowing a tray to be elevated from a stowed to a deployed configuration, facilitating contactless transactions and reducing pathogen transmission by keeping items accessible to vehicle occupants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional exchange assembly (box on stick handle, elongated spoon device, or fixed transaction tray) is used, then the device complexity is low, but the ease of operation is poor and pathogen transmission risk increases due to lack of height adjustment and contactless capability
Solution Approach 1:
The patent applies the dynamics principle by implementing a height-adjustable tray mechanism that can move between a stowed position (low) and a deployed position (high). This dynamic adjustment allows the tray to adapt to different operational modes: when in the deployed position, it enables contactless drive-thru transactions by reaching vehicle windows; when in the stowed position, it maintains a compact profile. The drawer assembly also dynamically extends and retracts to facilitate smooth item transfer, resolving the contradiction between operational ease and device complexity.
Solution Approach 2:
The patent applies the nesting principle by integrating the tray within a drawer assembly that is itself housed within the main housing structure. The tray can be stored within the drawer when not in use, and the drawer slides into the housing, creating a nested configuration. This nested design allows the system to maintain low device complexity when the tray is stowed while providing easy of operation when deployed, as the nested structure guides the tray through smooth extension and retraction motions.
2Reliability
If a height adjustable tray with drawer extension is implemented, then the ease of operation and contactless capability are improved, but the device complexity increases due to additional mechanisms (drawer slides, lift module, fasteners)
Solution Approach 1:
The patent applies the segmentation principle by dividing the exchange assembly into distinct functional modules: the housing structure, the drawer assembly with slides, the lift module for height adjustment, and the tray with fasteners. Each module performs a specific function and can be independently analyzed or maintained. This segmentation improves reliability by isolating potential failure points while managing device complexity through modular design, where each segment is relatively simple but combines to provide sophisticated functionality.
Solution Approach 2:
The patent applies the intermediary principle by introducing the drawer assembly as a mediator between the fixed housing and the movable tray. The drawer slides act as an intermediary mechanism that smoothly transitions the tray between retracted and extended positions, reducing direct mechanical stress and improving reliability. The lift module serves as an intermediary that gradually elevates the tray from stowed to deployed position, enabling controlled movement that enhances system reliability while distributing mechanical loads across multiple components rather than requiring a single complex mechanism.
3Object-affected harmful factors
If contactless payment and item transfer is enabled through tray elevation, then pathogen transmission is reduced, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies the universality principle by designing the height-adjustable tray mechanism to serve multiple functions: it enables contactless drive-thru transactions by elevating the tray to vehicle window level, it provides enhanced item accessibility for customers at the counter, and it maintains a compact stowed position when not needed. This multi-functionality justifies the increased manufacturing complexity by delivering superior hygiene (reduced pathogen transmission) while also improving operational versatility, making the additional manufacturing cost worthwhile through enhanced public health benefits and operational flexibility.
Data Source
AI summary
An article exchange assembly for reducing transmission of pathogens includes a housing, which is mountable in an opening in a wall of a structure below a service window positioned in the wall. The housing extends from the opening into the structure and has a front face, which is open. A set of drawer slides is engaged to and positioned in the housing. The drawer slides are selectively extensible through the front face of the housing. A drawer is operationally engaged to the set of drawer slides. A plurality of fasteners is engaged to a tray, which is positioned in the drawer. The fasteners selectively engage article to the tray. A lift module selectively elevates the tray to positioned proximate to a top of the drawer so that the articles are accessible to a person seated in a vehicle positioned exterior to the structure and proximate to the service window.