Ergonomic Handle Extensions for Enhanced Accessibility and Safety

Publication ID: 24-11857854_0002_PTD
Published: October 28, 2025
Category:New Applications & Use Cases

Legal Citation

pr1or.art Inc., “Ergonomic Handle Extensions for Enhanced Accessibility and Safety,” Published Technical Disclosure No. 24-11857854_0002_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857854_0002_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,854.

Summary of the Inventive Concept

This inventive concept applies the core technology of the original patent to various industries, providing ergonomic handle extensions that enhance accessibility, reduce fatigue, and improve safety for users in public transportation, industrial settings, assistive devices, office environments, and construction sites.

Background and Problem Solved

The original patent described an endcap for sporting implements, which, while effective for its intended purpose, has limitations in terms of its applicability to other fields. The new inventive concept addresses the need for ergonomic handle extensions that can be adapted to various industries, providing users with improved grip, reduced strain, and enhanced safety.

Detailed Description of the Inventive Concept

The ergonomic handle extension consists of a rigid base portion and a transverse extension projecting from the base portion. The transverse extension has a width at a location proximal to the attachment point, and its design allows for a comfortable grip, reducing strain and fatigue. In various embodiments, the transverse extension may curve towards the central axis, have a continuous upper surface sweeping through an arc of less than 90 degrees, feature a generally smooth inside surface, or have a concave surface facing towards the central axis. These design elements enable the handle extension to support a user's fifth proximal phalanx, preventing slipping, twisting, or accidents.

Novelty and Inventive Step

The new inventive concept's novelty lies in its application of the original patent's core technology to entirely new industries and use cases, providing a previously unknown solution for enhancing accessibility, reducing fatigue, and improving safety. The inventive step is in the recognition of the potential for ergonomic handle extensions to address specific pain points in various fields, and the design of the transverse extension to accommodate these needs.

Alternative Embodiments and Variations

Alternative embodiments of the ergonomic handle extension may include adjustable or customizable designs, materials with varying textures or grip properties, or integration with sensors or other technologies to monitor user comfort or fatigue. Variations may also include different attachment mechanisms or modular designs to facilitate easy installation or replacement.

Potential Commercial Applications and Market

The ergonomic handle extension has significant commercial potential in various industries, including public transportation, industrial manufacturing, assistive devices, office furniture, and construction equipment. The market for such solutions is substantial, driven by the growing need for accessibility, safety, and ergonomics in diverse settings.

CPC Classifications

SectionClassGroup
A A63 A63B60/16
A A63 A63B60/14

Field of Art

Ergonomic handle and extension design for sporting, industrial, and assistive equipment, focusing on user interface and grip optimization. Requires understanding of mechanical design, human factors engineering, and material science

Person of Ordinary Skill (PHOSITA) Profile

A mechanical engineer or industrial designer with 3-5 years experience in ergonomic product design, familiar with human factors principles, material selection, and design adaptation across different usage contexts

Obviousness Rationale

A PHOSITA would recognize that the source patent's handle extension design provides a fundamental technical framework that can be systematically adapted across multiple application domains. The core mechanical principles of the rigid base portion and transverse extension are universally applicable, with minor contextual modifications. The PTD's variations represent predictable design extensions that leverage the source patent's core technological insights through straightforward ergonomic adaptation.

Obvious Combinations & Variations

Source Patent Element
Rigid base portion with receptacle for sporting implement attachment
PTD Variation
Attachment to grab bars, wheelchairs, tools, desks, and industrial equipment
Obviousness Reasoning
Modular attachment design is a known technique for extending functional utility across different contexts, representing a predictable design choice for a PHOSITA
Source Patent Element
Transverse extension curving towards central axis
PTD Variation
Curved extension optimized for supporting user's fifth proximal phalanx in different environments
Obviousness Reasoning
Ergonomic grip optimization is a standard design approach, with curve modifications representing a finite set of predictable geometric variations
Source Patent Element
Extension with continuous upper surface sweeping through arc
PTD Variation
Applying arc geometry to reduce user fatigue across industrial, office, and assistive contexts
Obviousness Reasoning
Translating established biomechanical design principles across domains is an obvious extension for a skilled practitioner
Source Patent Element
Smooth inside surface facing central axis
PTD Variation
Surface texture and geometry modifications to enhance safety and grip in construction and transportation
Obviousness Reasoning
Surface design optimization is a routine engineering task with predictable outcomes based on known human factors principles
Source Patent Element
Concave surface design
PTD Variation
Adapting concave surface for enhanced user support in mobility and accessibility applications
Obviousness Reasoning
Geometric surface modifications representing minor design variations are within the ordinary skill of a PHOSITA
35 U.S.C. § 103 Summary: Based on US Patent 11857854, the present disclosure demonstrates that the claimed handle extension variations represent obvious design adaptations that would be readily conceived by a person having ordinary skill in ergonomic product design. The systematic application of the source patent's core mechanical principles across diverse usage contexts constitutes prior art rendering subsequent similar claims obvious and non-patentable.

Original Patent Information

Patent NumberUS 11,857,854
TitleHandle extension