External Tubular Sealing Device Installation
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Solution Overview
Problem
Existing sealing, baffling, and reinforcement devices for tubular members with cavities require installation from within the cavity, limiting flexibility and ease of installation, as they need to be inserted into the cavity while the interior is exposed or against a wall before the walls are assembled.
Innovation Solution
A member with a carrier and activatable material that can be inserted from outside the cavity, featuring a fastener system to retain it in place, allowing for expansion and adaptation to various cavity sizes and shapes through flexible or rigid extensions, enabling sealing, baffling, or reinforcement from outside the cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sealing/baffling/reinforcement devices are installed from within the cavity, then proper installation and retention are achieved, but installation flexibility and ease of operation deteriorate due to limited access and requirement for exposed interior
Solution Approach 1:
The patent inverts the conventional installation approach by enabling insertion from outside the cavity rather than from within. The member is designed with an insertion end that can be fed through an opening in the wall from the exterior, allowing installation without requiring access to the cavity interior. This inversion of the installation direction resolves the contradiction by improving ease of operation while maintaining proper installation and retention.
Solution Approach 2:
The member is designed with preliminary features for external retention, including a base at the base end and fasteners that can engage with the wall from the outside. The base is configured to be retained outside the cavity by the fastener, establishing retention mechanisms before the member is fully installed and activated. This preliminary configuration of retention features enables simplified external installation while ensuring proper securing of the member.
2Ease of operation
If the member is designed with external fastener system, then installation from outside is enabled, but device complexity increases due to additional fastener and base components
Solution Approach 1:
The patent merges multiple functions into the carrier structure: the carrier provides both the insertion pathway and the retention mechanism through its base and fastener integration. The base at the base end and the fastener are configured to work together as a unified retention system, reducing the need for separate complex external components. This merging of functions enables external installation while controlling device complexity.
Solution Approach 2:
The carrier is designed as a multi-functional component that serves multiple purposes: it provides the structural framework for the member, enables insertion through openings, provides retention through the base and fastener system, and supports the activatable material. This universality of the carrier structure reduces the need for additional specialized components, thereby enabling external installation without proportionally increasing device complexity.
3Adaptability or versatility
If the member can be inserted from outside the cavity, then installation flexibility improves, but retention reliability may worsen due to limited engagement options from exterior
Solution Approach 1:
The patent applies local quality by concentrating retention features at specific locations: the base at the base end and the fastener positioned to engage with the wall. These localized retention structures are designed with specific geometric properties to maximize engagement reliability. The base is configured with surfaces and features that provide reliable mechanical engagement with the wall, ensuring secure retention despite external installation approach.
Solution Approach 2:
The member combines different material properties in its construction: the carrier provides structural integrity and mechanical engagement features, while the activatable material provides sealing, baffling, or reinforcement functions. This composite structure enables the member to maintain reliability through the carrier's rigid retention features while achieving the desired cavity protection functions through the activatable material that can be activated after installation.
Data Source
AI summary
A member (10) for providing sealing, baffling, and/or reinforcement to a cavity member (30) comprising: (a) a carrier (12) with an insertion end (13) and a base end (11) having: (i) a base (16) at the base end (11) adapted for engaging with a wall (36) of the cavity member (30); (ii) a fastener (20) adapted for passing through an opening of the cavity member (32) and retaining the member (10) to the cavity member (30); (iii) a center portion (18) extending from the insertion end (13) to the base end (11); and (b) activatable material (26) disposed on the carrier (12).