Adjustable Pivot Bearing Assembly for Heavy Door Alignment

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Solution Overview

Problem

Existing hardware for large, heavy ballistic doors cannot withstand the pressure and allow for adjustments during installation or post-installation, requiring disassembly and removal, which is time-consuming, labor-intensive, and expensive.

Innovation Solution

A multiple axis adjustable pivot bearing assembly is installed, comprising a pivot floor mount, pivot square nut, pivot cover, and pivot bolt, allowing for adjustments along multiple axes (x, y, z, and rotational) without disassembly, using bolts or screws for installation and a spanner wrench for adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If existing hardware is used for ballistic doors, then the door can be installed, but the hardware cannot withstand the pressure (800-1000 psi) and cannot be adjusted

Engineering Contradiction:

Improvehardware strengthVSAvoidadjustability

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The hinge assembly incorporates adjustable components including a pivot pin that can be repositioned along the pivot axis, and a hinge leaf with adjustment slots that allow modification of the hinge angle and position. This dynamic adjustability enables the hardware to adapt to substructure variations while maintaining the strength required to withstand 800-1000 psi door pressures.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The hinge assembly is divided into separate adjustable components: a hinge leaf with mounting slots, a pivot pin with adjustment features, and a hinge cap. This segmentation allows individual components to be adjusted independently to compensate for substructure variations while each component maintains the structural integrity needed to handle high door weights and pressures.

Inventive Principle:

Principle #1Segmentation

2Manufacturing precision

If adjustments are made to compensate for substructure variations, then door alignment improves, but installation time and labor costs increase

Engineering Contradiction:

Improvedoor alignmentVSAvoidinstallation time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The hinge assembly is pre-configured with adjustment slots and movable pivot features that allow for quick alignment adjustments during installation. The design incorporates preliminary adjustment capabilities built into the structure, enabling installers to make precise alignment corrections without requiring complex procedures or additional components, thereby reducing installation time while achieving proper door alignment.

Inventive Principle:

Principle #10Preliminary action

3Manufacturing precision

If the door is removed for adjustments, then proper alignment can be achieved, but the process becomes prohibitively expensive and labor-intensive

Engineering Contradiction:

Improvedoor alignmentVSAvoidinstallation ease

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The hinge assembly incorporates in-place adjustment mechanisms including a pivot pin that can be repositioned along the pivot axis and a hinge leaf with adjustment slots. These dynamic features allow alignment corrections to be made while the door remains installed, eliminating the need for costly and labor-intensive removal and reinstallation processes while maintaining precise door alignment.

Inventive Principle:

Principle #15Dynamics

4Adaptability or versatility

If a multiple axis adjustable pivot bearing assembly is installed, then adjustment capability and adaptability improve, but device complexity increases

Engineering Contradiction:

Improvemulti-axis adjustment capabilityVSAvoidhardware complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The pivot bearing assembly serves multiple functions through its adjustable design: it supports the door weight, allows multi-axis adjustments for alignment, compensates for substructure variations, and provides rotational movement. By integrating these multiple functions into a single assembly with adjustable features rather than requiring separate components for each function, the design achieves high adaptability while controlling overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12305436B2Method for installing a multiple axis adjustable pivot bearing assembly

Publication Date: 2025.05.20 3B IND INC

AI summary

A method for installing a multiple axis adjustable pivot bearing assembly, comprising: Installing and adjustment-pivot unit: using bolts or screws to install a pivot floor mount, comprising a pivot floor mount aperture and a slot, to a floor, sliding a pivot square nut with a pivot square nut aperture into the slot such that the pivot square nut aperture is aligned the pivot floor mount aperture, place a pivot cover, comprising a pivot cover aperture, over the pivot floor mount, such that the pivot square nut aperture, the pivot floor mount aperture, and the pivot cover aperture are aligned so as to receive a lower portion of a pivot bolt, installing the pivot bolt into the pivot square nut aperture and through the pivot floor mount aperture and the pivot cover aperture, such that a pivot disk, which is part of or assembled to the pivot bolt, is partially in a recess feature of the pivot cover, installing a height-adjustment nut onto an upper portion of the pivot bolt above the pivot disk, placing a pivot mount block onto the now assembled adjustment-pivot unit; and mounting a door onto the pivot mount block by attaching a door frame onto the pivot mount block.