Spring Bolt Hanger for Concrete Attachment Without Drilling
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Solution Overview
Problem
Attaching objects to concrete surfaces without drilling holes is challenging, and ensuring the secure affixment of fasteners to concrete structures is difficult.
Innovation Solution
A spring bolt hanger device comprising a barrel, bolt, retainer, and spring, which allows the bolt to be retracted for installation and extended for use as an attachment point, eliminating the need for drilling and providing enhanced strength compared to conventional anchors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional anchors, screws, or nails are used to attach objects to concrete surfaces, then attachment is achieved, but drilling holes is required and secure affixment is difficult to ensure
Solution Approach 1:
The device is segmented into a barrel portion embedded in concrete and a bolt portion that extends outward for attachment. This segmentation allows the complex fastening function to be divided into two simple parts: embedding the barrel in concrete and extending the bolt for attachment, eliminating the need for drilling holes.
Solution Approach 2:
The bolt is made dynamically extendable from the barrel through rotational movement. The bolt transitions from a retracted state (flush with the concrete surface) to an extended state (protruding for attachment), providing ease of operation without requiring complex installation procedures.
2Ease of operation
If the bolt is extended for use as an attachment point, then attachment functionality is achieved, but the bolt may be lost or stolen when not in use
Solution Approach 1:
The bolt dynamically transitions between extended and retracted states. When not in use, the bolt retracts into the barrel and is secured by the spring mechanism, preventing loss or theft. When needed, the bolt extends for attachment, ensuring both security and availability.
Solution Approach 2:
The bolt is nested within the barrel when retracted, with the spring mechanism providing the nesting function. This nested configuration protects the bolt and prevents it from being lost or stolen when not in use.
3Reliability
If the spring bolt hanger is embedded in concrete before curing, then secure attachment is achieved, but the device must remain in place during construction
Solution Approach 1:
The barrel is preliminarily embedded in the concrete before curing, establishing a secure anchor point. The bolt remains retracted during this phase, allowing the concrete to cure with the device in place. After curing, the bolt can be extended for attachment, providing both secure affixment and operational flexibility.
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
Enables secure attachment to concrete surfaces without drilling, saving time and money, and offering greater strength than conventional anchors, especially under large loads.
Implementation Method 1
a spring positioned in the barrel between the retainer and a first end of the barrel, said spring configured to bias the bolt away from the first end of the barrel
Data Source
AI summary
A spring bolt hanger comprising a barrel, a bolt positioned within the barrel, a retainer associated with the bolt, and a spring positioned in the barrel between the retainer and a first end of the barrel, said spring configured to bias the bolt away from the first end of the barrel. The spring bolt hanger has two distinct operative configurations. In the retracted configuration the spring bolt hanger has the bolt retracted into the barrel. In the extended configuration the bolt is extended from the barrel and is accessible outside of the concrete surface for use as an attachment point. The spring bolt hanger may be selectively moved between operative configurations. Also disclosed are methods of using a spring bolt hanger to attach an object to a concrete surface.