Door Wedge with Hook for Secure Storage and Positioning
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Solution Overview
Problem
Existing door stops and wedges lack sufficient resiliency to maintain doors at user-desired positions and are prone to misplacement during storage and transport, leading to increased costs due to frequent replacement.
Innovation Solution
A door wedge with a resilient inclined surface and a hook feature, fabricated from vinyl material, that engages the door's bottom surface and includes a skid-resistant pad to prevent movement, allowing secure positioning and easy storage/transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a door wedge with a resilient inclined surface is used to engage the door, then the door can be held at a user desired position, but the wedge may inadvertently disengage and the door may become disengaged from the door-check
Solution Approach 1:
The patent changes the physical parameters of the inclined surface by specifying durometer values (40-70 durometer) to optimize the balance between resiliency for door engagement and structural integrity for reliable holding. This parameter adjustment resolves the contradiction by finding the optimal range that provides sufficient cushioning while maintaining engagement reliability.
2Adaptability or versatility
If door wedges are transported and stored by cleaning crews, then they can be used at different locations, but they become misplaced and must be replaced
Solution Approach 1:
The door wedge provides self-service by incorporating its own retrieval mechanism through the hook feature. The hook allows the wedge to be easily retrieved and transported without external assistance, and when placed in the recess of the door stop, it becomes self-retaining and prevents misplacement during storage and transport operations.
3Device complexity
If a door wedge without a retrieval feature is used, then it is simpler in design, but it becomes lost during storage and transport
Solution Approach 1:
The hook feature serves multiple functions: it enables easy retrieval and transport of the wedge, provides a mechanism for the wedge to engage with the recess in the door stop for secure storage, and acts as a leverage point for installation and removal. This multi-functionality resolves the contradiction by adding minimal complexity while significantly improving retention reliability.
4Object-affected harmful factors
If a door wedge with a resilient inclined surface is used, then it can cushion the door and prevent damage, but it may not have sufficient force to maintain the door at the desired position
Solution Approach 1:
The patent resolves this contradiction by changing the durometer parameter to an optimal range (40-70) that balances cushioning protection with sufficient holding force. The resilient inclined surface provides cushioning to prevent door damage while maintaining enough force to hold the door at the desired position, eliminating the need to choose between protection and holding capability.
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 door wedge effectively maintains doors at user-selected positions without damaging the door or supporting surface, accommodating variances in spacing and preventing movement, while the hook feature facilitates secure storage and transport, reducing replacement costs.
Implementation Method 1
a resilient inclined surface for engaging a bottom surface of the door
Implementation Method 2
a pad affixed to the lower surface of the body for discouraging movement of the body over the supporting surface
Data Source
AI summary
A door wedge is provided for maintaining a door at a user-desired position. The door wedge includes a base extending along a first axis. The base has upper and lower surfaces and first and second ends. An inclined plate extends along a second axis at a predetermined angle to the first axis. The inclined plate has upper and lower surfaces and first and second ends. The first end of the inclined plate intersects the first end of the base. A hook projects from the inclined plate. The hook has a terminal end vertically spaced from the upper surface of the inclined plate. A pad is affixed to the lower surface of the base.