Doorway Horizontal Bar with Quick-Release Parallel Bars

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Solution Overview

Problem

Conventional doorway mounted horizontal bars are limited to performing only one type of exercise, requiring users to purchase additional parallel bar structures to conduct parallel bar exercises.

Innovation Solution

A doorway mounted horizontal bar design featuring a rod with end portions attached to doorway side moldings, frames with tubular members, and auxiliary supports with coupling devices and quick release fastening systems, allowing users to conduct various exercises, including parallel bar exercises, with a single mechanism without additional equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single longitudinal bar or rod is used in the horizontal bar, then the structure is simple and easy to manufacture, but it can only conduct one kind of exercise and lacks versatility

Engineering Contradiction:
Improveexercise typesVSAvoidstructure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies multi-functionality by integrating multiple exercise functions into a single horizontal bar apparatus. The bar is designed to support both conventional horizontal bar exercises and parallel bar exercises through integrated features such as multiple grasping positions, attachment points for additional bars, and structural configurations that enable various exercise types without requiring separate equipment.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If a single longitudinal bar or rod is used in the horizontal bar, then the device complexity is low, but additional parallel bar structure or device must be purchased for parallel bar exercises

Engineering Contradiction:
Improveexercise typesVSAvoidequipment quantity
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent applies merging by combining the functions of a conventional horizontal bar and parallel bars into a single integrated apparatus. The horizontal bar structure incorporates attachment mechanisms, multiple support points, and structural elements that allow users to perform both traditional horizontal bar exercises and parallel bar exercises using the same equipment, eliminating the need to purchase separate parallel bar devices.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If tubular members are freely telescopically interconnected, then the bar can be adjusted to different doorway widths, but the structural stability may be compromised

Engineering Contradiction:
Improvedoorway width adjustmentVSAvoidstructural stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent applies dynamics by incorporating adjustable and telescopic components that allow the horizontal bar to adapt to different doorway widths while maintaining structural stability. The tubular members are designed with telescopic mechanisms that can be extended or retracted to match various doorway dimensions, and the connection points are engineered to provide secure attachment that preserves stability during exercise use.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8172726B1Doorway mounted horizontal bar
Publication Date: 2012.05.08 EXPECTATIONS LLC OWNERS IN COMMON 1 2
  • US8172726B1 patent drawing
  • US8172726B1 patent drawing
  • US8172726B1 patent drawing

AI summary

A doorway mounted horizontal bar includes a rod having two ends for attaching to two side moldings of a doorway, two frames attached to the end portions of the rod for supporting a tubular member, and two auxiliary supports each having a lower segment attached to the rod and each having an upper handle attached to the upper end of the frame for being grasped by the user, the lower segments of the auxiliary supports are each attached to the rod with a coupling device, and the handles of the auxiliary supports are each attached to the frame with another coupling device, the coupling devices each include a quick release fastening device for detachably securing the coupling devices and the auxiliary supports to the rod and the frames.