Jamb Patch for Steel Door Frame Repair

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Solution Overview

Problem

Steel door frames are often damaged due to corrosion and other forms of damage, leading to the costly and inefficient solution of replacing the entire frame, rather than just the damaged section.

Innovation Solution

An apparatus and method using a jamb patch with a first portion to replace the damaged section and a second portion that fits behind the remaining frame, allowing for alignment and secure attachment with fasteners, enabling localized repair without replacing the entire frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the entire steel door frame is replaced when damage is identified, then structural integrity and appearance are restored, but costs and installation time increase significantly

Engineering Contradiction:

Improvestructural integrityVSAvoidinstallation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The door frame is divided into replaceable sections. When damage occurs, only the damaged section needs to be removed and replaced, rather than replacing the entire frame. This segmentation allows for localized repair while maintaining the overall structural integrity and appearance of the door frame.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the entire steel door frame is replaced when damage is identified, then structural integrity and appearance are restored, but costs increase significantly

Engineering Contradiction:

Improvestructural integrityVSAvoidcosts

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of discarding the entire door frame when damage occurs, the undamaged portions are retained and reused. Only the specific damaged section is discarded and replaced, thereby recovering and reusing the majority of the original frame material.

Inventive Principle:

Principle #34Discarding and recovering

3Loss of time

If a jamb patch is used to replace only the damaged section, then costs and installation time are reduced, but alignment precision with the remaining frame becomes challenging

Engineering Contradiction:

Improveinstallation timeVSAvoidalignment precision

Core Design Contradiction:

Loss of timeVSManufacturing precision

Solution Approach 1:

Alignment pins or guide features are incorporated as intermediary elements that facilitate precise alignment between the jamb patch and the remaining door frame sections. These alignment features ensure that the replacement section fits accurately without requiring complex measurement and adjustment procedures.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9284739B2Apparatus and method for repairing a steel door frame

Publication Date: 2016.03.15 SCI PRO ORG

AI summary

An apparatus and method for repairing a damaged door frame, wherein a jamb patch has a first portion adaptable to replace a removed section of the door frame and a second portion coupled to the first portion and adaptable to fit behind a remaining section of the door frame to align the first portion with the remaining section of the door frame. The second portion of the jamb patch may be slidably coupled to the first portion for location into a first position, wherein the first portion of the jamb patch overlaps the second portion, and into a second position, wherein the second portion of the jamb patch extends from the first portion. Alternatively, the second portion of the jamb patch may fixedly extend from the first portion of the jamb patch.