Wall Repair Device With Expandable Arm Webbing
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Solution Overview
Problem
Existing methods for repairing holes in wall structures, particularly those with cavities, often result in incomplete or unstable repairs due to difficulties in accessing the inner surface and securing patches, leading to visible patches or filler falling into the cavity.
Innovation Solution
A device comprising a body with arm members and a webbing member that can be extended and locked into place within the wall cavity, allowing for a planar surface to be formed for filler application, which is adjustable and collapsible to prevent damage to adjacent surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If adhesive mesh patch is placed on exposed wall surface, then repair can be performed, but repaired surface may not be flush with wall surface or mesh patch becomes visible through filler
Solution Approach 1:
The patent introduces a support structure (such as a rigid or semi-rigid backing board) as an intermediary element placed behind the wall surface at the repair location. This support provides a flat reference surface against which the filler can be applied, ensuring the repaired area becomes flush with the surrounding wall. The support acts as a mediator between the filler material and the wall surface, solving the problem of achieving proper surface alignment without requiring advanced skill from the homeowner.
2Manufacturing precision
If mesh patch is adhered on inside of wall structure, then flush repair is possible, but patch and filler may fall off into wall cavity
Solution Approach 1:
The patent applies preliminary action by providing a support structure that is installed and secured to the wall structure before the filler and mesh patch are applied. This support structure creates a stable foundation that prevents the filler and patch from falling into the wall cavity. By preparing the support structure in advance, the system ensures both flush surface repair and reliable prevention of materials falling into the cavity, eliminating the trade-off between these two requirements.
3Ease of operation
If inner surface of wall member is not easily accessible, then repair difficulty increases, but conventional patches cannot be effectively applied
Solution Approach 1:
The patent segments the repair system into separate functional components: a support structure that can be inserted through the hole from the accessible side, and a filler assembly that is applied separately. The support structure is divided into portions that can be inserted through the damaged area and secured on the inner surface, with features like expansion mechanisms or anchoring elements that provide stability without requiring direct access to the inner surface. This segmentation allows the repair to proceed from the accessible side only, simplifying the operation while managing device complexity through modular design.
4Ease of operation
If conventional patch solutions are used, then repair can be performed, but repairs may not be permanent or structurally sound
Solution Approach 1:
The patent employs composite materials by combining multiple materials with complementary properties in the repair system. The support structure may use rigid or semi-rigid materials for structural strength, the mesh patch provides reinforcement and adhesion, and the filler material bonds these components together while restoring the wall surface. This composite approach creates a repair assembly that is both structurally sound and durable, addressing the weakness of conventional single-material patches while maintaining ease of application through integrated design.
Data Source
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AI summary
A device for repairing a hole in a wall structure, the device comprising: a body; a plurality of arm members mounted relative to the body, wherein a webbing member extends between two or more of the arm members; and a displaceable member associated with the body, wherein displacement of the displaceable member actuates the plurality of arm members to move relative to the body between a retracted condition and an extended condition in which the webbing member is stretched relatively tightly between the arm members to form a substantially planar surface.