Angled Hanger Hook Geometry for Fast Access Under 9 G Loads
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Solution Overview
Problem
Current hanger hooks fail to securely retain equipment in emergency vehicles against vertical 3 G and horizontal 9 G forces, and they complicate rapid access to emergency equipment, requiring a solution that is easy to install and adaptable to various types of straps, lines, cables, or filaments.
Innovation Solution
A hanger hook design featuring integral upper and lower members with an annular fastener receiver portion, angled to provide clear access and secure retention, made from materials like steel for emergency use or plastic for other applications, capable of withstanding 9 G forces and allowing easy installation and adaptation to diverse applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If latching mechanisms and compartments are used to secure equipment against G forces, then equipment retention reliability is improved, but access time to emergency equipment increases
Solution Approach 1:
The patent removes the latching mechanism and compartment enclosure, extracting only the essential retention function. The hook design uses a simple curved geometry that relies on friction and geometric constraint rather than mechanical latching, enabling rapid one-handed access while maintaining security against G forces.
Solution Approach 2:
The hook is designed as a separate, modular component that can be independently installed and removed. This segmentation allows the retention function to be provided by a simple, fast-access hook while other vehicle equipment can use different securing methods, optimizing both speed and reliability for different applications.
2Reliability
If complex latching mechanisms are used to secure equipment, then equipment retention against G forces is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the essential retention function from complex latching mechanisms, using a simple curved hook geometry that relies on friction and geometric constraint rather than mechanical latching components.
Solution Approach 2:
The hook combines multiple functions into a single geometric form: the curved shape simultaneously provides structural strength, friction-based retention, and geometric constraint against G forces, eliminating the need for separate latching components.
3Ease of manufacture
If standardized hook designs are used, then manufacturing cost is reduced, but adaptability to various strap types and applications is limited
Solution Approach 1:
The hook design features a universal curved geometry that can accommodate various strap types, cable diameters, and attachment methods. The open curved shape and friction-based retention work effectively with different materials and configurations, making the same basic design adaptable to multiple applications without requiring customization.
Solution Approach 2:
The patent allows for parameter variations in the hook design (such as curvature radius, thickness, and material properties) while maintaining the same fundamental geometric principle. This enables customization for different load requirements and applications without changing the basic design approach, keeping manufacturing simple while increasing versatility.
Data Source
AI summary
A hook having a fastener receiver with an axis of radial symmetry and two opposing edges defining a linear axis, where a support extends from the first edge and is angled away by a first angle from a midline plane defined by the linear axis and the axis of radial symmetry and a retainer extends from the second edge and is angled away from the midline plane by a second angle, preferably equal to the first angle and oppositely directed. The hanger hook is preferably of one piece construction but a two-piece interlocking version may also be made. Direct access to the fastener receiver is provided for tools and fasteners. The hanger hook retains equipment against 9 G horizontal accelerations and 3 G vertical accelerations.