Bendable Mailbox Post Resilient Spring Mount

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Solution Overview

Problem

Existing sign posts and mailbox posts are prone to damage from vehicle impacts, leading to costly repairs and compromised signage performance, as previous solutions either sacrifice signage or result in unstable, wobbly signs.

Innovation Solution

A bendable post mount with a resilient foundation assembly that pivots under lateral force and returns to its upright position, featuring a helical coil spring interconnection between the post and a top assembly, allowing for deflection and reversion, and adaptable for various mounting surfaces like dirt, concrete, and asphalt.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a rigid post mount is used to provide stable signage, then sign performance is improved, but damage from vehicle impact increases

Engineering Contradiction:
Improvesign performanceVSAvoidimpact damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The post mount transitions from a static rigid structure to a dynamic resilient system. The spring mechanism allows the post to deflect and absorb impact forces dynamically, then return to its original position, eliminating the need for rigid resistance that causes damage.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The resilient spring mechanism is pre-installed in the post mount to provide cushioning before impact occurs. This beforehand cushioning absorbs the shock of vehicle contact, preventing the transmission of harmful forces to both the sign and the vehicle.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Object-affected harmful factors

If a resilient post mount is used to reduce impact damage, then damage resistance is improved, but sign stability deteriorates

Engineering Contradiction:
Improveimpact damageVSAvoidsign stability
Core Design Contradiction:
Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The spring mechanism provides resilience only when needed (during impact), while maintaining stability during normal conditions. The design allows the post to remain substantially upright and stable under light loads, but deflect when subjected to excessive lateral forces from vehicle impact.

Inventive Principle:
Principle #16Partial or excessive action

3Object-affected harmful factors

If disposable signage is used to protect vehicles, then vehicle damage is reduced, but signage cost increases

Engineering Contradiction:
Improvevehicle damageVSAvoidsignage cost
Core Design Contradiction:
Object-affected harmful factorsVSLoss of substance

Solution Approach 1:

The resilient post mount converts the harmful impact force into beneficial elastic deformation of the spring. This allows the sign to absorb and dissipate impact energy through controlled deflection and rebound, protecting the vehicle while preserving the sign for continued use.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

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 significantly reduces damage to both posts and vehicles by allowing the post to absorb impact, maintaining stability and performance while being economical and adaptable for different environments.

Implementation Method 1

a resilient foundation assembly whereby the post may pivot and deflect from a generally vertical orientation when a lateral force is applied to the post and the post may return to the generally vertical orientation when no lateral force is applied to the post

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS7832695B2Bendable post
Publication Date: 2010.11.16 FLEXPOST
  • US7832695B2 patent drawing
  • US7832695B2 patent drawing
  • US7832695B2 patent drawing

AI summary

A bendable mailbox or sign post comprises a foundation defined at one of a dirt, a concrete, and an asphalt surface. A top assembly releasably couples with the foundation and has a plate and a stub extending upward from the plate. The elongated post extends vertically from a bottom end connected with the top assembly. A resilient interconnection is provided between the post and the top assembly, whereby the post pivots about the bottom end and deflects from its vertical orientation when a lateral force is applied to the post and the post returns to the vertical orientation when no lateral force is applied. A frangible interconnection may be provided between the resilient interconnection member and one of the post and the stub.