Quick-Latch T-Bolt Clamp Structure for Stronger Slotted Loop Ends

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Solution Overview

Problem

Existing T-bolt clamps require additional components and manufacturing complexity to mitigate the weakness at the loop end, which is compromised due to the formation of a slotted opening for quick-latch functionality.

Innovation Solution

A T-bolt clamp design featuring a slotted opening with bearing loops and complementary protrusions/slots that constrain the bearing loops against separation during tightening, eliminating the need for separate inserts or thicker materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a slotted opening is formed in the loop end to permit quick-latch functionality, then the T-bolt can be disengaged without removing the nut, but the loop end becomes weakened due to omission of band material

Engineering Contradiction:

Improvequick-latch functionalityVSAvoidloop end strength

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

The loop end is segmented into two bearing loops separated by the slotted opening, with the T-bolt head engaging both bearing loops to distribute loads and maintain structural integrity despite the removed material

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bearing loops are positioned at specific locations within the loop end to concentrate strength where needed, while the slotted opening is strategically placed to minimize material removal while still enabling quick-latch operation

Inventive Principle:

Principle #3Local quality

2Strength

If inserts or thickened loop ends are used to strengthen the weakened loop end, then the loop end strength is improved, but additional components and manufacturing operations are required

Engineering Contradiction:

Improveloop end strengthVSAvoidmanufacturing complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The strengthening features (bearing loops) are merged directly into the loop end structure itself, eliminating the need for separate inserts or additional components. The slotted opening and bearing loops are integrated into a single piece of band material

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The loop end structure serves multiple functions simultaneously: it provides the quick-latch opening for easy operation while also incorporating the bearing loops that strengthen the structure, making the component self-sufficient without additional parts

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12553549B2Quick-latch clamp with constraining t-bolt

Publication Date: 2026.02.17 NORMA US HOLDING LLC

AI summary

A T-bolt clamp includes a circumferentially extending band and a fastening assembly that employs a T-bolt to tighten the clamp by turning a nut to draw loop ends of the band toward each other. One of the loop ends includes a slotted opening that permits a head of the T-bolt to be inserted and removed without removing the nut from the T-bolt. The fastening assembly is configured to constrain first and second bearing loops of the slotted loop end against movement away from each other during tightening of the clamp. Protrusions on the head of the T-bolt can be used to perform the constraining function by engaging slots in the bearing loops.