Compact Pocket Door Frame Assembly with T-Shape Header Support

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Solution Overview

Problem

Conventional pocket door frames are prone to sagging and failure due to inadequate support, warping over time, and have oversized dimensions that increase packaging and shipping costs, leading to logistical challenges and environmental inefficiencies.

Innovation Solution

A compact modular pocket door frame assembly with a header support and vertical spreaders forming a T-shape structure for easy assembly and shipping, using primed finger joint pine and plywood for stability, and T-nuts for track installation, eliminating the need for metal and allowing for efficient packaging and reduced material costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional pocket door frames use traditional construction methods with metal channels and extensive metal fasteners, then structural strength is improved, but shipping and packaging costs increase due to oversized dimensions and metal weight

Engineering Contradiction:
Improvestructural strengthVSAvoidframe weight
Core Design Contradiction:
StrengthVSWeight of stationary object

Solution Approach 1:

The patent replaces the traditional metal mechanical fastening system with a chemical bonding system using epoxy adhesive. The metal channels and metal fasteners are substituted with wood construction elements bonded through chemical means, eliminating heavy metal components while maintaining structural integrity through proper adhesive bonding techniques.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention uses composite construction combining wood header supports, wood vertical spreaders, and epoxy adhesive creates a composite structure that achieves strength comparable to or exceeding traditional metal constructions. The combination of wood structural elements with chemical bonding produces a lightweight yet strong frame assembly.

Inventive Principle:
Principle #40Composite materials

2Stability of the object's composition

If conventional pocket door frames use traditional oversized dimensions, then structural stability is improved, but packaging and shipping efficiency deteriorates

Engineering Contradiction:
Improveframe stabilityVSAvoidframe volume
Core Design Contradiction:
Stability of the object's compositionVSVolume of stationary object

Solution Approach 1:

The patent divides the pocket door frame into separable segments: a header support portion and vertical spreader portions that can be packaged independently in compact configurations. This segmentation allows the frame components to be shipped in smaller, more efficient packages while maintaining structural stability through proper chemical bonding during installation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention changes the dimensional configuration by allowing vertical spreaders to be positioned and bonded in a staged manner, utilizing vertical space efficiently during packaging while achieving proper spatial relationships during installation. The chemical bonding process enables flexible positioning that optimizes packaging volume without compromising frame stability.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of manufacture

If conventional pocket door frames rely on adjacent wall panels for support, then ease of manufacture is improved, but reliability deteriorates due to warping and sagging over time

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidframe reliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent extracts the support function from adjacent wall panels and concentrates it within the pocket door frame assembly itself. The header support and vertical spreaders form a self-contained structural system that does not depend on external wall panels for stability, eliminating the warping and sagging problems caused by reliance on adjacent structures.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention applies preliminary chemical bonding action during installation, where epoxy adhesive is applied to bond the vertical spreaders to the header support before the structure is subjected to operational loads. This preliminary chemical bonding creates immediate structural integrity, preventing warping and sagging that would occur with traditional mechanical fastening alone.

Inventive Principle:
Principle #10Preliminary action

4Strength

If conventional pocket door frames use traditional chemical adhesives, then bonding strength is improved, but environmental sustainability deteriorates due to toxic fumes and VOC emissions

Engineering Contradiction:
Improvebonding strengthVSAvoidVOC emissions
Core Design Contradiction:
StrengthVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical parameters of the adhesive by selecting epoxy-based chemicals that have low or zero VOC emissions compared to traditional adhesives. This parameter change maintains bonding strength while eliminating harmful emissions, achieving both structural requirements and environmental sustainability goals.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention uses disposable applicator materials and packaging for the chemical adhesive that are designed for single-use during installation. This approach reduces the need for complex, reusable application equipment and minimizes chemical waste, supporting environmental sustainability while maintaining bonding effectiveness.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUS20240183215A1Compact pocket door frame assembly
Publication Date: 2024.06.06 BEYOND THE GRAIN LLC
  • US20240183215A1 patent drawing
  • US20240183215A1 patent drawing
  • US20240183215A1 patent drawing

AI summary

An improved compact pocket door frame for a sliding door. The frame employs a header support having an overhead track attached by T-nuts. A pair of vertical spreaders form a pocket recess entrance. A header spacer is positioned perpendicular to a lower surface of the header support and extends outwardly from the pocket recess. A header frame member is positioned perpendicular to each header spacer and extends outwardly from the pocket recess. The pocket door frame is constructed and arranged to provide dimensional stability and prevent warping or twisting. The header support is removably fastened to the vertical spreaders for shipping and storage whereby the header support is secured to the vertical spreaders forming a T-shape structure for wall mounting to support a sliding door.