Jamb Adjuster Fastener for Window Frame Structural Reinforcement
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Solution Overview
Problem
Conventional window frame fasteners weaken the structural integrity of window frames due to limited anchoring depth, leading to bowing issues and the need for additional receivers, which cause structural degradation and require additional hardware.
Innovation Solution
A self-tapping jamb adjuster with a wide head and oversized, narrowly oriented threads that engage a greater window frame wall depth, eliminating the need for additional receivers and providing structural support by displacing frame material, while allowing passage of conventional fasteners through a central channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional threaded fasteners are used to attach weather stripping to the window frame, then mechanical attachment is achieved, but the window frame wall depth is insufficient to provide robust anchoring, leading to structural weakening and bowing
Solution Approach 1:
The fastener parameters are changed by providing a fastener with a head of specific dimensions (width of at least 1/8 inch, preferably 3/16 inch) and a controlled thread engagement length (about 25/32 inch) that optimizes the balance between attachment strength and frame wall depth constraints, allowing robust anchoring without excessive penetration
Solution Approach 2:
A receiver member is introduced as an intermediary component that provides a threaded engagement surface within the window frame. This receiver allows the fastener to achieve proper thread engagement length for strong attachment while the fastener head prevents over-penetration into the frame cavity, effectively mediating between the fastener and frame structure
2Ease of operation
If receivers are installed along the longitudinal length of the window frame to provide threaded surfaces, then threaded fastener attachment is enabled, but numerous holes are created in the window frame, resulting in structural weakening and increased bowing
Solution Approach 1:
The receiver member merges multiple functions into a single component: it provides the threaded engagement surface for fastener attachment, acts as a structural reinforcement element within the frame wall, and serves as a barrier to prevent fastener over-penetration. This consolidation reduces the need for separate reinforcement elements and minimizes the number of holes required
Solution Approach 2:
The receiver member is designed as a multi-functional element that simultaneously enables fastener attachment, reinforces the frame structure against bowing, and prevents over-penetration of fasteners. This universal component addresses multiple problems with a single solution, reducing overall structural degradation
3Reliability
If the fastener head width is increased to accommodate window jamb groove depth, then penetration into the groove is prevented, but the fastener size increases
Solution Approach 1:
The fastener head dimensions are optimized with a width of at least 1/8 inch (preferably 3/16 inch) and a length of about 25/32 inch, creating a proportional relationship between head size and frame wall thickness that reliably prevents over-penetration into the jamb groove while maintaining compact overall fastener size
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
The jamb adjuster achieves a robust attachment, reducing structural degradation and eliminating the need for additional shims or receivers, enhancing the window frame's resistance to bowing and providing a secure, cost-effective solution for weather stripping and accessory attachment.
Implementation Method 1
a plurality of oversized and narrowly oriented threads relative to commercially available threaded fasteners (about 50% larger in terms of diameter than average), frictionally engaging a greater ratio of the window frame wall depth than conventional
Data Source
AI summary
A jack screw-type fastener with a head defining an interior aperture with a Phillips pattern in the top and in communication with a central channel sized and shaped to receive a fastener therethrough for structurally reinforcing the window jamb of a window frame. The jamb adjuster includes a series of oversized and narrowly oriented threads relative to commercially available threaded fasteners (about 50% larger than average), frictionally engaging a greater ratio of the window frame wall depth than conventional. In use, the jamb adjuster is a self-tapping screw member that renders unnecessary a receiver, reducing component cost and structural degradation, and instead displacing a portion of the window frame material, for example vinyl, during insertion, causing a more structurally secure attachment to the window frame. The jamb adjuster also provides a more robust attachment mechanism for vital weather stripping than other fasteners or adhesive as known in the art.