Purgeable Injection Wrap Assembly for Spill-Free Preservative Refill

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Solution Overview

Problem

Chemical preservatives used for embedded foundation preservation are toxic and pose a risk of spillage during application, necessitating a safe and spill-free replenishment system.

Innovation Solution

An injection apparatus with a profiled backing plate and semicylindrical tube portion defines a lumen connected to preservative outlet nozzles, allowing controlled flow and purge of preservative into and out of the preservation wrap, featuring a syringe with a plunger and locking mechanisms to prevent leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chemical preservatives are applied to embedded foundations using traditional methods, then preservation effectiveness is achieved, but spillage risk increases exposing users to toxic chemicals

Engineering Contradiction:

Improvepreservation effectivenessVSAvoidspillage risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an intermediary delivery system consisting of a preservative reservoir, injection apparatus, and wrap impregnation system. This intermediary mechanism allows preservative to be transferred from the reservoir to the wrap in a controlled manner, eliminating direct handling and spillage risks while ensuring effective preservation application.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent extracts the preservative from its traditional liquid container form and transfers it into a sealed reservoir system with controlled dispensing. By taking out the preservative from direct user contact and enclosing it in a controlled delivery system, the harmful spillage factor is removed while maintaining preservation effectiveness.

Inventive Principle:

Principle #2Taking out (Extraction)

2Duration of action of stationary object

If preservative is replenished into the wrap, then preservation effectiveness is maintained, but residual preservative may leak during operation or transport

Engineering Contradiction:

Improvepreservation durationVSAvoidresidual preservative leakage

Core Design Contradiction:

Duration of action of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent implements preliminary purging action by including a purging mechanism in the injection apparatus that actively removes residual preservative from the delivery system before the apparatus is removed or before transport begins. This preliminary action prevents residual preservative from leaking later during operation or transport, while the wrap remains adequately impregnated for continued preservation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent employs a rapid purging sequence that quickly expels residual preservative through the nozzles before the replenishment cycle completes. By rushing through the purging action promptly, the system eliminates residual preservative that could otherwise leak, while ensuring the wrap has already received sufficient preservative for its intended duration of action.

Inventive Principle:

Principle #21Skipping (Rushing through)

3Manufacturing precision

If multiple nozzles are used for preservative distribution, then uniform impregnation is achieved, but device complexity increases

Engineering Contradiction:

Improveimpregnation uniformityVSAvoidapparatus structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent segments the preservative delivery function into multiple distributed nozzles along the injection apparatus. Each nozzle independently delivers preservative to different sections of the wrap, achieving uniform impregnation across the entire wrap surface. The segmentation of the delivery function into multiple simple nozzle units avoids the complexity of a single complex distribution mechanism.

Inventive Principle:

Principle #1Segmentation

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

Ensures safe and spill-free replenishment of preservative in embedded foundation wraps, minimizing contact with the user and preventing residual preservative leakage.

Implementation Method 1

A syringe having a plunger with a handle and a plunger piston is configured to reciprocate within the lumen... The injection apparatus is configured for insertion between the preservation wrap and the embedded foundation so that preservative supplied via the preservative inlet can flow through the lumen and out from the nozzles into the preservation wrap. After the preservation wrap has been replenished, the plunger may be operated to purge residual preservative from the lumen via the nozzles and may also be retracted to draw further remaining preservative away from the nozzles.

Methodology Applied

Scientific EffectPressure gradient: Pressure Gradient

Data Source

PatentUS20250303438A1Purgeable injection apparatus for spill-free replenishment of embedded foundation preservation wraps

Publication Date: 2025.10.02 COPPER CARE WOOD PRESERVATIVES INC

AI summary

A system for replenishing embedded foundation preservation wraps with preservative comprises an embedded foundation, a preservation wrap, and injection apparatus configured to be inserted between the wrap and the foundation. The injection apparatus includes a profiled backing plate and a semicylindrical tube portion defining a lumen therebetween, with a preservative inlet and a plurality of outlet nozzles along a distal bayonet fronting portion. A syringe with a reciprocating plunger operates within the lumen to enable controlled delivery of preservative and purging of residual preservative after use. The plunger may be locked in retracted, inserted, or blocking positions to manage flow and prevent leakage.