Automated Flap Mailbox Design for Secure Keyless Mail Delivery

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Solution Overview

Problem

Current mail delivery systems are insecure due to the need for access by delivery personnel, making large-scale secure mail delivery impractical with existing solutions, as they often require keys or access devices and do not effectively manage or secure delivered items.

Innovation Solution

A smart and secure mailbox device with a connected mailbox and secured storage section, utilizing a weight sensor and automated flap to securely transfer delivered mail into the storage section, along with a controller to manage access and notifications, allowing keyless access and informing users of mail attributes and storage status.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If locked mailboxes are used to secure delivered mail, then mail security is improved, but device complexity and key management become impractical at large scale

Engineering Contradiction:
Improvemail securityVSAvoidkey management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the locking mechanism from the mailbox itself and places it in a separate keyholder device. The mailbox remains simple and keyless, while security is provided by the portable keyholder that can be attached to or removed from the mailbox as needed. This separation eliminates the need for complex key management in each mailbox while maintaining security.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The keyholder acts as an intermediary between the user and the mailbox. Instead of directly locking the mailbox, the keyholder provides secure access control and can transfer keys or access credentials to authorized users. This intermediary layer simplifies the mailbox design while maintaining security through the keyholder's control mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If delivery personnel need access to mailboxes, then mail delivery functionality is improved, but mail security deteriorates due to unauthorized access risks

Engineering Contradiction:
Improvemail delivery accessVSAvoidmail security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The keyholder implements dynamic access control where delivery personnel can be granted temporary or conditional access rights. The system can dynamically adjust who has access and when, allowing delivery personnel to access mailboxes only when necessary and only for specific mail items, thereby maintaining security while enabling delivery functionality.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Access rights for delivery personnel are pre-configured and managed through the keyholder system before actual delivery occurs. The system can pre-authorize specific delivery personnel for specific time windows or specific mail items, ensuring that access is granted only under controlled conditions that maintain security while enabling smooth delivery operations.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If traditional mailboxes are used, then simplicity is maintained, but security and automation capabilities are insufficient

Engineering Contradiction:
Improvemailbox simplicityVSAvoidsecurity capability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The system is segmented into two independent components: a simple keyless mailbox and a separate keyholder device with security and automation capabilities. This segmentation allows the mailbox to remain simple and easy to use, while the keyholder provides the necessary security, access control, and automation functions that would be too complex to integrate directly into the mailbox.

Inventive Principle:
Principle #1Segmentation

4Reliability

If keys or access devices are required for each mailbox, then security is improved, but ease of operation deteriorates due to carrying multiple keys

Engineering Contradiction:
Improvemail securityVSAvoidaccess convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The keyholder is designed as a universal device that can manage access to multiple mailboxes and multiple users. Instead of requiring separate keys for each mailbox, a single keyholder can control access to numerous mailboxes and can issue or revoke access rights for different users as needed. This multi-functionality greatly improves ease of operation while maintaining security.

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 solution provides secure, automated, and efficient mail delivery and storage, enabling secure access to authorized users while informing them of mail details and storage status, addressing the impracticality of large-scale secure mail delivery in existing systems.

Implementation Method 1

The shared section includes a weight sensor. The weight sensor is configured to generate an activation signal in response to a delivered mail.

Methodology Applied
Scientific EffectWeight sensing:

Implementation Method 2

The delivered mail may fall into the secured storage component through the gap created by the automated flap.

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS10905272B2Mail keyper
Publication Date: 2021.02.02 CONAWAY LINDA
  • US10905272B2 patent drawing
  • US10905272B2 patent drawing
  • US10905272B2 patent drawing

AI summary

A smart and secure mailbox includes a mailbox and a secured storage. The mailbox and the secured storage are connected through a shared section. The shared section encloses an automated flap. The shared section also integrates a weight sensor. Upon a delivery of a mail, the weight sensor provides an activation signal which triggers the automated flap. The automated flap activates and provides a gap between the mailbox and the secured storage. The delivered mail falls through the gap. Upon a placement of the delivered mail within the secured storage, the automated flap closes which secures the delivered mail within the secured storage.