Flush Anchor Bolt Assembly for Easier Concrete Finishing
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Solution Overview
Problem
Existing anchoring systems for securing structures to concrete often require protruding anchor bolts, making it difficult to finish the concrete surface and requiring cumbersome lifting of construction elements during installation.
Innovation Solution
An improved anchor bolt fastener assembly with a float design that allows the anchor bolt to be installed flush with the concrete slurry, featuring a threaded bore, inner receiving chamber, and outer slurry contact surface, enabling flush embedding and easy surface finishing, and using specialized fastener studs for secure attachment after curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If anchor bolts are embedded protruding above the concrete slurry surface, then the threaded portion is accessible for attaching construction elements, but the concrete surface finishing becomes difficult and time-consuming
Solution Approach 1:
The anchor bolt is divided into two functional segments: a threaded portion for attachment and a smooth shank portion for embedding. The float component is segmented into a float body and a float stem, allowing the threaded portion to be positioned at a desired height while the float embeds flush with the surface. This segmentation enables both surface finishing efficiency and attachment accessibility.
Solution Approach 2:
The float acts as an intermediary component between the anchor bolt and the concrete surface. It provides a bearing surface that allows the anchor bolt to be embedded flush with the slurry surface while maintaining the threaded portion at the appropriate height for attachment. The float mediates between the conflicting requirements of surface flushness and thread accessibility.
2Ease of operation
If anchor bolts are embedded protruding above the concrete slurry surface, then the threaded portion is accessible for attaching construction elements, but the lifting and positioning of construction elements becomes cumbersome
Solution Approach 1:
By segmenting the anchor bolt into threaded and smooth portions, and using a separate float component, the system allows construction elements to be positioned and lowered onto the float's bearing surface without needing to clear protruding threads. This simplifies the lifting and positioning operation while maintaining attachment accessibility through the threaded portion.
3Productivity
If anchor bolts are embedded flush with the concrete slurry surface, then the surface finishing becomes easy and cost-effective, but the threaded portion becomes less accessible for attaching construction elements
Solution Approach 1:
The float serves as an intermediary that allows the anchor bolt to be embedded flush with the surface while maintaining thread accessibility. The float's bearing surface provides the interface for positioning construction elements, while the threaded portion extends above the float for attachment operations. This resolves the contradiction by decoupling surface flushness from thread accessibility through the mediating float component.
Solution Approach 2:
The solution moves the attachment interface to a different vertical dimension. Instead of requiring the threaded portion to protrude above the concrete surface (vertical accessibility), the float provides a horizontal bearing surface at the surface level, while threads remain accessible at a higher elevation. This dimensional separation allows both flush surface embedding and thread accessibility to coexist.
4Ease of operation
If anchor bolts are embedded protruding above the concrete slurry surface, then the threaded portion is accessible for attaching construction elements, but automatic surface finishing machines cannot be used effectively
Solution Approach 1:
Segmenting the anchor assembly into float and bolt components allows the float to provide a flush bearing surface that is compatible with automatic finishing machines. The threaded portion is segmented as a separate functional element that remains accessible above the float, enabling both automated surface finishing and subsequent manual attachment operations.
Solution Approach 2:
The float acts as an intermediary between the automated surface finishing process and the anchor bolt. It provides a smooth, flush surface that automated machines can finish without obstruction from protruding threads, while the threaded portion remains accessible above the float for attachment. The float mediates between the requirements of automated finishing and thread accessibility.
Data Source
AI summary
An anchor bolt fastener assembly with specialized connection capabilities and features for attaching building components to concrete slabs, walls, ceilings, and/or structural surfaces. Compression force can be established and maintained over time using a compression washer in combination with a specialized fastener stud that is designed to exploit the compression washer benefits. Methods of using exemplary embodiments include installing the anchor bolt fastener assembly relatively flush with the surface of the concrete slurry by direct insertion in the slurry using a specialized threaded anchor bolt float. Once the slurry hardens, the anchor bolt and anchor bolt float embedded in the concrete slurry cooperate with the specialized fastener stud to secure the building component to the concrete.